Buick Encore Owners & Service Manuals

Buick Encore: Schematic wiring diagrams

SPECIFICATIONS

AMBIENT AIR TEMPERATURE SENSOR RESISTANCE

Ambient Air Temperature Sensor Resistance

Ambient Air Temperature Sensor Resistance

SCHEMATIC WIRING DIAGRAMS

INSTRUMENT CLUSTER WIRING SCHEMATICS (ENCORE)

Power, Ground, Serial Data, and Gauges

Fig. 1: Power, Ground, Serial Data, and Gauges
Fig. 1: Power, Ground, Serial Data, and Gauges

Indicators

Fig. 2: Indicators
Fig. 2: Indicators

Air Temperature and Driver Information Center

Fig. 3: Air Temperature and Driver Information Center
Fig. 3: Air Temperature and Driver Information Center

INSTRUMENT CLUSTER WIRING SCHEMATICS (Encore)

Power, Ground, Serial Data, and Gauges

Fig. 4: Power, Ground, Serial Data, and Gauges
Fig. 4: Power, Ground, Serial Data, and Gauges

Indicators

Fig. 5: Indicators
Fig. 5: Indicators

Air Temperature, Turn Signal and Driver Information Center

Fig. 6: Air Temperature, Turn Signal and Driver Information Center
Fig. 6: Air Temperature, Turn Signal and Driver Information Center

AUDIBLE WARNINGS WIRING SCHEMATICS (ENCORE)

Audible Warnings

Fig. 7: Audible Warnings
Fig. 7: Audible Warnings

AUDIBLE WARNINGS WIRING SCHEMATICS (Encore)

Audible Warnings

Fig. 8: Audible Warnings
Fig. 8: Audible Warnings

DIAGNOSTIC INFORMATION AND PROCEDURES

DTC B0158: Ambient air temperature sensor

DIAGNOSTIC CODE INDEX

DIAGNOSTIC INFORMATION AND PROCEDURES

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B0158 02

Ambient Air Temperature Sensor Circuit Short to Ground

DTC B0158 05

Ambient Air Temperature Sensor Circuit High Voltage/Open

Diagnostic Fault Information

Diagnostic Fault Information

Circuit/System Description

The instrument cluster monitors the ambient air temperature sensor with a low reference circuit and signal circuit. The instrument cluster monitors the voltage drop across the sensor, which is inversely proportional to temperature. When the ambient air temperature is cold, the resistance of the sensor is high. When the ambient air temperature is warm, the resistance of the sensors is low. The instrument cluster converts the voltage value to a temperature value and displays the temperature.

Conditions for Running the DTC

The system voltage is between 9-16 V.

Conditions for Setting the DTC

B0158 02

The instrument cluster detects the sensor signal is more than 88ºC (190ºF) .

B0158 05

The instrument cluster detects the sensor signal is less than -40ºC (-40ºF).

Action Taken When the DTC Sets

The instrument cluster uses a default air temperature value for further calculations. The instrument cluster will display -ºC (-ºF). A/C compressor engagement may be disabled.

Conditions for Clearing the DTC

The DTC will become history if the instrument cluster no longer detects a malfunction.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

Instrument Cluster Description and Operation

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool Ambient Air Temperature parameter is between -40ºC (-40ºF) and +88ºC (+190ºF) and changes with air temperature changes.
  • If not between -40ºC (-40ºF) and +88ºC (+190ºF) or changes with air temperature changes

Refer to Circuit/System Testing

  • If between -40ºC (-40ºF) and +88ºC (+190ºF) and changes with air temperature changes
  1. Perform the Instrument Cluster Ambient Air Temperature Instant Update special function with the scan tool
  2. Verify the scan tool Ambient Air Temperature parameter is within five degrees of actual ambient air temperature.
  • If not within five degrees of actual ambient air temperature

Refer to Circuit/System Testing.

  • If within five degrees of actual ambient air temperature
  1. All OK.

Circuit/System Testing

  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the B9 Ambient Air Temperature Sensor. It may take up to 2 min for all vehicle systems to power down.
  2. Test for less than 10 ohms between the low reference circuit terminal B (or 2) and ground.

If 10 ohms or greater

  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
  2. Test for less than 2 ohms in the low reference circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the P16 Instrument Cluster.

If less than 10 ohms

  1. Ignition ON.
  2. Verify the scan tool Ambient Air Temperature parameter is greater than 98%.

If 98% or less

  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
  2. Test for infinite resistance between the signal circuit terminal A (or 1) and ground.
  • If less than infinite resistance, repair the short to ground on the circuit.
  • If infinite resistance, replace the P16 Instrument Cluster.
  • If greater than 98%
  1. Install a 3 A fused jumper wire between the signal circuit terminal A (or 1) and the low reference circuit terminal B (or 2).
  2. Verify the scan tool Ambient Air Temperature parameter is less than 8%.

If 8% or greater

  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster, ignition ON.
  2. Test for less than 1 V between the signal circuit and ground.
  • If 1 V or greater, repair the short to voltage on the circuit.
  • If less than 1 V
  1. Ignition OFF
  2. Test for less than 2 ohms in the signal circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the P16 Instrument Cluster.
  • If less than 8%
  1. Test or replace the B9 Ambient Air Temperature Sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

  • Displays and Gauges Component Replacement Reference
  • Control Module References for instrument cluster replacement, programming and setup

DTC B0550: Odometer circuit general memory malfunction

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC B0550 32

Odometer Circuit General Memory Malfunction

Circuit/System Description

The Instrument Cluster is equipped with odometers that indicate the distance traveled by the vehicle. One type of odometer is the season odometer where the traveled distance can not be reset by the driver. This information is also stored in the Body Control Module (BCM). In addition to storing the season odometer value for the vehicle, the Instrument Cluster and the BCM store the VIN. Software checks are performed to ensure these modules, and their stored season odometer information, can not be moved or transferred between different vehicles.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The BCM has detected an internal memory malfunction.

Action Taken When the DTC Sets

DTC B0550 32 is stored in the BCM memory.

Conditions for Clearing the DTC

The BCM no longer detects a malfunction.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

Driver Information Center (DIC) Description and Operation (base Instrument Cluster), Driver Information Center (DIC) Description and Operation (uplevel Instrument Cluster)

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC B0550 32 is not set.
  • If DTC B0550 32 is set
  1. Program the K9 Body Control Module.
  2. Verify the DTC does not set
  • If the DTC sets, replace the K9 Body Control Module.
  • If the DTC does not set
  1. All OK.
  • If DTC B0550 32 is not set
  1. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for BCM replacement, programming and setup

DTC B071F: Transmission shift indicator internal malfunction

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category

DTC Descriptor

DTC B071F 39

Transmission Shift Indicator Internal Malfunction

Circuit/System Description

The transmission shift lever position indicator is located on the center console and indicates the current transmission shift level position. The transmission shift lever position indicator receives power and ground and is controlled by the body control module (BCM) via serial data.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The BCM has detected an internal malfunction in the transmission shift lever position indicator

Action Taken When the DTC Sets

No action is taken

Conditions for Clearing the DTC

The DTC will become history if the BCM no longer detects a malfunction

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

Instrument Cluster Description and Operation

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC B071F 39 is not set.
  • If the DTC is set

Replace the P2 Transmission Shift Lever Position Indicator.

  • If the DTC is not set
  1. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Displays and Gauges Component Replacement Reference

DTC B1370: CONTROL MODULE IGNITION ON AND START CIRCUIT

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B1370 01

Control Module Ignition On and Start Circuit Short to Battery

DTC B1370 06

Control Module Ignition On and Start Circuit Open

Diagnostic Fault Information

Diagnostic Fault Information

Circuit/System Description

The vehicle power mode master is the body control module (BCM). The ignition switch is a low current switch with multiple discrete circuits to the BCM.

The power mode master will activate relays and other direct outputs of the power mode master as needed according to the calculated power mode. Some relays controlled by the BCM are switched ignition voltage outputs that are pass through circuits within the BCM directly from the ignition switch. If these circuits short to ground, the B+ circuit fuse to the ignition switch will open.

Conditions for Running the DTC

B1370 01

Ignition switch is in the Accessory position

B1370 06

Ignition switch is in the Accessory, Run, or Crank positions.

Conditions for Setting the DTC

B1370 01

Ignition circuit is shorted to voltage.

B1370 06

  • Ignition circuit is open.
  • Ignition or run/crank relay circuit is shorted to ground.
  • B+ circuit of the ignition run/crank relay is open or shorted to ground.
  • Ignition run/crank relay control circuit open, including relay coil and ground.

Action Taken When the DTC Sets

The Instrument Cluster still functions except check engine light is always off.

Conditions for Clearing the DTC

  • The condition responsible for setting the DTC no longer exists.
  • A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.

Reference Information

Schematic Reference

  • Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)
  • Power Distribution Schematics (Encore) , Power Distribution Schematics (Encore)
  • Power Moding Schematics (Encore) , Power Moding Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

  • Instrument Cluster Description and Operation
  • Power Mode Description and Operation

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Verify that DTC B144B or B1380 is not set.
  • If DTC B144B or B1380 is set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

  • If DTC B144B or B1380 is not set

Refer to Circuit/System Testing.

Circuit/System Testing

  1. Ignition OFF, disconnect the KR73 Ignition Main Relay.
  2. Test for less than 10 ohms between the ground circuit terminal 1 and ground.
  • If 10 ohms or greater

Test the ground circuit for an open/high resistance.

  • If less than 10 ohms
  1. Verify that a test lamp illuminates between the B+ circuit terminal 3 and ground.
  • If the test lamp does not illuminate

Repair the open/high resistance in the circuit.

  • If the test lamp illuminates
  1. Verify that a test lamp does not illuminate between the control circuit terminal 2 and ground.
  • If the test lamp illuminates
  1. Disconnect the harness connector at the K9 Body Control Module.
  2. Test for less than 1 V between the control circuit and ground.
  • If 1 V or greater, repair the short to voltage on the circuit.
  • If less than 1 V, replace the K9 Body Control Module.
  • If the test lamp does not illuminate
  1. Ignition ON, verify that a test lamp illuminates between the control circuit terminal 2 and ground.
  • If the test lamp does not illuminate
  1. Test for less than 2 ohms in the control circuit end to end.
  • If less than 2 ohms, replace the K9 Body Control Module.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If the test lamp illuminates
  1. Ignition OFF, reconnect the KR73 Ignition Main Relay.
  2. Disconnect the harness connector at the P16 Instrument Cluster.
  3. Verify that a test lamp does not illuminate between the ignition circuit terminal 31 and ground.
  • If the test lamp illuminates
  1. Test for less than 1 V between the ignition circuit and ground.
  2. If 1 V or greater, repair the short to voltage on the circuit.
  3. If less than 1 V, replace the KR73 Ignition Main Relay.

If the test lamp does not illuminate

  1. Ignition ON, verify that a test lamp illuminates between the ignition terminal 31 and ground.

If the test lamp does not illuminate and the Ignition fuse is good

  1. Test for less than 2 ohms in the ignition circuit end to end
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the KR73 Ignition Main Relay.

If the test lamp does not illuminate and the Ignition fuse is open

  1. Test for infinite resistance between the ignition circuit and ground.
  • If less than infinite resistance, repair the short to ground on the circuit.
  • If infinite resistance, replace the P16 instrument cluster.
  • If the test lamp illuminates
  1. Replace the P16 instrument cluster.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

  • Instrument Cluster Replacement (Encore), Instrument Cluster Replacement (Encore)
  • Relay Replacement (Within an Electrical Center) , Relay Replacement (Attached to Wire Harness)
  • Control Module References for BCM replacement, programming and setup

DTC B3567: Info display select switch

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B3567 01

Info Display Select Switch Circuit Short to Battery

DTC B3567 02

Info Display Select Switch Circuit Short to Ground

DTC B3567 04

Info Display Select Switch Circuit Open

DTC B3567 59

Info Display Select Switch Circuit Protection Time-Out

Diagnostic Fault Information

Diagnostic Fault Information

Circuit/System Description

The driver information center switch is a multiplexed switch. Battery power is provided to the driver information center switch via the instrument cluster. The driver information center switch signal circuit is pulled up to battery voltage in the instrument cluster. The instrument cluster also provides the driver information center switch with a low reference. The switch input to the instrument cluster is pulled low when a switch is activated. The driver information center switch is a momentary contact switch that connects a series of resistors in a resistor ladder format. The instrument cluster monitors the driver information center switch signal circuit to determine the driver information center switch inputs. Each switch state Menu, Up, Down, Clear corresponds to a certain resistance value. The instrument cluster determines the switch pressed by the voltage drop across the resistors.

Conditions for Running the DTC

  • The ignition is in OFF, ACCESSORY or RUN position.
  • The system voltage is between 9-16 V.

Conditions for Setting the DTC

B3567 01

The instrument cluster detects that the driver information center switch signal circuit is shorted to battery.

B3567 02

The instrument cluster detects that the driver information center switch signal circuit is shorted to ground.

B3567 04

The instrument cluster detects that the driver information center switch signal circuit is open.

B3567 59

The instrument cluster detects that the driver information center switch is stuck.

Action Taken When the DTC Sets

The instrument cluster ignores the driver information center switch inputs.

Conditions for Clearing the DTC

The DTC will become history if the instrument cluster no longer detects a malfunction.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

Driver Information Center (DIC) Description and Operation (base Instrument Cluster), Driver Information Center (DIC) Description and Operation (uplevel Instrument Cluster)

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON.
  2. Verify the driver information center set, up and down function changes when pressing the set, up or down switch.
  • If the driver information center does not change

Refer to Set, Up and Down Switch Malfunction

  • If the driver information center changes
  1. Verify the driver information center menu function changes when pressing the menu switch.
  • If the driver information center does not change

Refer to Menu Switch Malfunction

  • If the driver information center changes
  1. All OK.

Circuit/System Testing

Menu Switch Malfunction

  1. Ignition ON.
  2. Test for 4.8-5.2 V between the signal circuit terminal 5 and ground.

If less than 4.8 V

  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
  2. Test for infinite resistance between the signal circuit and ground.
  • If less than infinite resistance, repair the short to ground on the circuit.
  • If infinite resistance
  1. Test for less than 2 ohms in the signal circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the P16 Instrument Cluster.

If greater than 5.2 V

  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster, ignition ON.
  2. Test for less than 1 V between the signal circuit and ground.
  • If 1 V or greater, repair the short to voltage on the circuit.
  • If less than 1 V, replace the P16 Instrument Cluster.

If between 4.8-5.2 V

  1. Test for less than 10 ohms between the ground circuit terminal 3 and ground.

If 10 ohms or greater

Repair the open/high resistance in the circuit

If less than 10 ohms

  1. Test or replace the S78 Turn Signal/Multifunction Switch.

Set, Up and Down Switch Malfunction

  1. Ignition OFF and all vehicle systems OFF, disconnect the X1 harness connector at the S78 Turn Signal/Multifunction Switch, ignition ON.
  2. Test for less than 10 ohms between the low reference circuit terminal 6 and ground.

If 10 ohms or greater

  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
  2. Test for less than 2 ohms in the low reference circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the P16 Instrument Cluster.

If less than 10 ohms

  1. Test for 9.8-12.2 V between the signal circuit terminal 12 and ground.

If less than 9.8 V

  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
  2. Test for infinite resistance between the signal circuit and ground.
  • If less than infinite resistance, repair the short to ground on the circuit.
  • If infinite resistance
  1. Test for less than 2 ohms in the signal circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the P16 Instrument Cluster.

If greater than 12.2 V

  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster, ignition ON.
  2. Test for less than 1 V between the signal circuit and ground.
  • If 1 V or greater, repair the short to voltage on the circuit.
  • If less than 1 V, replace the P16 Instrument Cluster.

If between 9.8-12.2 V

  1. Test or replace the S78 Turn Signal/Multifunction Switch.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

  • Displays and Gauges Component Replacement Reference
  • Control Module References for instrument cluster replacement, programming and setup

DTC P0461-P0464 (FWD): Fuel level sensor

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0461

Fuel Level Sensor Performance

DTC P0462

Fuel Level Sensor Circuit Low Voltage

DTC P0463

Fuel Level Sensor Circuit High Voltage

DTC P0464

Fuel Level Sensor Circuit Intermittent

Diagnostic Fault Information

Diagnostic Fault Information

Circuit/System Description

The fuel level sensor changes resistance based on fuel level. The engine control module (ECM) monitors the signal circuit of the fuel level sensor in order to determine the fuel level. When the fuel tank is full, the resistances of the fuel level sensor is low and the ECM senses a low signal voltage on the signal circuit of the fuel level sensor. When the fuel tank is empty, the resistance of the fuel level sensor is high and the ECM senses a high signal voltage. The ECM uses the signal circuit of the fuel level sensor in order to calculate the percentage of remaining fuel in the tank. The ECM sends the fuel level percentage via serial data to the body control module (BCM). The BCM then sends the fuel level percentage via serial data to the instrument cluster in order to control the fuel gauge.

Conditions for Running the DTC

  • The engine is running
  • The system voltage is between 11-16 V

Conditions for Setting the DTC

P0461 00

The ECM detects a change in fuel level of less than a specified amount (typically 3-10 L or 0.8-2.6 gal) over a specified driving distance (typically 240-320 km or 150-200 miles).

P0462

  • The signal voltage is less than 0.25 V.
  • The above conditions must be met for 5 seconds.

P0463

  • The signal voltage is greater than 4.7 V.
  • The above conditions must be met for 5 seconds.

P0464

  • The fuel level change is greater than 10%.
  • The above conditions must be met for 30 seconds.
  • DTC P0464 runs and fails 2 out of 3 test cycles.

Action Taken When the DTC Sets

  • P0461, P0462, P0463, and P0464 are Type B DTCs
  • The fuel gauge defaults to empty
  • The low fuel indicator illuminates

Conditions for Clearing the DTC

  • P0461, P0462, P0463, and P0464 are Type B DTCs
  • The DTC becomes history when the conditions for setting the DTC are no longer present.
  • The history DTC clears after 40 malfunction-free warm-up cycles.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT

CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

Instrument Cluster Description and Operation

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (LUV) , Powertrain Diagnostic Trouble Code (DTC) Type Definitions (2H0)

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool Fuel Remaining in Tank parameter is between 5-95% and varies with fuel level.
  • If not between 5-95% or does not vary with fuel level

Refer to Circuit/System Testing.

  • If between 5-95% and varies with fuel level
  1. Verify that all fuel level gauge segments illuminate when performing the scan tool Driver Information Center Segments control function.
  • If any fuel level gauge segments do not illuminate

Replace the P16 Instrument Cluster

  • If all fuel level gauge segments illuminate
  1. All OK.

Circuit/System Testing

  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the A7 Fuel Pump and Level Sensor Assembly. It may take up to 2 minutes for all vehicle systems to power down.
  2. Test for less than 10 ohms between the low reference circuit terminal 3 and ground.

If 10 ohms or greater

  1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
  2. Test for less than 2 ohms in the low reference circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the K20 Engine Control Module.

If less than 10 ohms

  1. Ignition ON.
  2. Test for less than 1 V between the low reference circuit and ground.

If 1 V or greater

Repair the short to voltage on the circuit.

If less than 1 V

  1. Verify the scan tool Remaining Fuel In Tank parameter is greater than 95%.

If 95% or less

  1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
  2. Test for less than 1 V between the signal circuit and ground.
  • If 1 V or greater, repair the short to voltage on the circuit.
  • If less than 1 V, replace the K20 Engine Control Module.
  • If greater than 95%
  1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
  2. Test for infinite resistance between the signal circuit terminal 4 and ground.
  • If less than infinite resistance

Repair the short to ground on the circuit.

  • If infinite resistance
  1. Ignition OFF
  2. Test for less than 2 ohms in the signal circuit end to end.

If 2 ohms or greater

Repair the open/high resistance in the circuit.

If less than 2 ohms

  1. Test or replace the B46 Fuel Level Sensor.

Component Testing

  1. Ignition OFF, remove the A7 Fuel Pump and Level Sensor Assembly.
  2. Sweep the Fuel Level Sensor through its full range of motion while measuring resistance between the signal terminal 4 and the low reference terminal 3.
  3. Test for a minimum resistance value of 37-43 ohms and a maximum value of 245-255 ohms without any spikes or dropouts.
  • If minimum resistance is not 37-43 ohms, maximum resistance is not 245-255 ohms, or if there are any spikes or dropouts

Replace the B46 Fuel Level Sensor.

  • If minimum resistance is 37-43 ohms, maximum resistance is 245-255 ohms, and if there are no spikes or dropouts
  1. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

  • Displays and Gauges Component Replacement Reference
  • Control Module References for the Engine Control Module replacement, programming and setup

DTC P0461-P0464, P2066, P2067, OR P2068 (AWD): Fuel level sensor

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0461

Fuel Level Sensor 1 Performance

DTC P0462

Fuel Level Sensor 1 Circuit Low Voltage

DTC P0463

Fuel Level Sensor 1 Circuit High Voltage

DTC P0464

Fuel Level Sensor 1 Circuit Intermittent

DTC P2066

Fuel Level Sensor 2 Performance

DTC P2067

Fuel Level Sensor 2 Circuit Low Voltage

DTC P2068

Fuel Level Sensor 2 Circuit High Voltage

Diagnostic Fault Information

Diagnostic Fault Information

Circuit/System Description

The primary fuel level sensor and the secondary fuel level sensor change resistance based on fuel level. The engine control module (ECM) monitors the signal circuits of both sensor to determine the fuel level. When the fuel tank is full, the resistances of both fuel level sensors are low. When the fuel tank is empty, the resistances of the fuel level sensors are high. The ECM uses the signal voltages of the primary fuel level sensor and the secondary fuel level sensor to calculate the percentage of remaining fuel in the tank. The ECM sends the fuel level percentage via serial data to the body control module (BCM). The BCM then sends the fuel level percentage via serial data to the instrument cluster to control the fuel gauge.

Conditions for Running the DTC

  • The engine is running
  • The system voltage is between 11-16 V

Conditions for Setting the DTC

P0461 or P2066

The ECM detects a change in fuel level of less than a specified amount (typically 3-10 L or 0.8-2.6 gal) over a specified driving distance (typically 240-320 km or 150-200 miles).

P0462 or P2067

  • The signal voltage is less than 0.25 V.
  • The above conditions must be met for 5 seconds.

P0463 or P2068

  • The signal voltage is greater than 4.7 V.
  • The above conditions must be met for 5 seconds.

P0464

  • The fuel level change is greater than 10%.
  • The above conditions must be met for 30 seconds.
  • DTC P0464 runs and fails 2 out of 3 test cycles.

Action Taken When the DTC Sets

  • P0461, P0462, P0463, P0464, P2066, P2067 and P2068 are Type B DTCs
  • The fuel gauge defaults to empty
  • The low fuel indicator illuminates

Conditions for Clearing the DTC

  • P0461, P0462, P0463, P0464, P2066, P2067 and P2068 are Type B DTCs
  • The DTC becomes history when the conditions for setting the DTC are no longer present.
  • The history DTC clears after 40 malfunction-free warm-up cycles.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

Instrument Cluster Description and Operation

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (LUV) , Powertrain Diagnostic Trouble Code (DTC) Type Definitions (2H0)

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool Fuel Level Sensor Left Tank parameter is between 0.5-3.5 V and varies with fuel level.
  • If not between 0.5-3.5 V or does not vary with fuel level

Refer to Primary Fuel Level Sensor Malfunction in Circuit/System Testing

  • If between 0.5-3.5 V and varies with fuel level
  1. Verify the scan tool Fuel Level Sensor Right Tank parameter is between 0.5-3.5 V and varies with fuel level.
  • If not between 0.5-3.5 V or does not vary with fuel level

Refer to Secondary Fuel Level Sensor Malfunction in Circuit/System Testing

  • If between 0.5-3.5 V and varies with fuel level
  1. All OK.

Circuit/System Testing

Primary Fuel Level Sensor Malfunction

  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the A7 Fuel Pump and Level Sensor Assembly. It may take up to 2 minutes for all vehicle systems to power down.
  2. Test for less than 10 ohms between the low reference circuit terminal 3 and ground.

If 10 ohms or greater

  1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
  2. Test for less than 2 ohms in the low reference circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the K20 Engine Control Module.
  • If less than 10 ohms
  1. Ignition ON.
  2. Verify the scan tool Fuel Level Sensor Left Tank parameter is greater than 4.8 V.
  • If 4.8 V or less
  1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
  2. Test for infinite resistance between the signal circuit terminal 4 and ground.
  • If less than infinite resistance, repair the short to ground on the circuit.
  • If infinite resistance, replace the K20 Engine Control Module.
  • If greater than 4.8 V
  1. Install a 3 A fused jumper wire between the signal circuit terminal 4 and the low reference circuit terminal 3.
  2. Verify the scan tool Fuel Level Sensor Left Tank parameter is less than 0.2 V.

If 0.2 V or greater

  1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
  2. Test for less than 1 V between the signal circuit and ground.
  • If 1 V or greater, repair the short to voltage on the circuit.
  • If less than 1 V
  1. Ignition OFF
  2. Test for less than 2 ohms in the signal circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the K20 Engine Control Module.
  • If less than 0.2 V
  1. Test or replace the B46 Fuel Level Sensor.

Secondary Fuel Level Sensor Malfunction

  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the B46B Fuel Level Sensor - Secondary. It may take up to 2 minutes for all vehicle systems to power down.
  2. Test for less than 10 ohms between the low reference circuit terminal 3 and ground.

If 10 ohms or greater

  1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
  2. Test for less than 2 ohms in the low reference circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the K20 Engine Control Module.
  • If less than 10 ohms
  1. Ignition ON.
  2. Verify the scan tool Fuel Level Sensor Right Tank parameter is greater than 4.8 V.

If 4.8 V or less

  1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
  2. Test for infinite resistance between the signal circuit terminal 4 and ground.
  • If less than infinite resistance, repair the short to ground on the circuit.
  • If infinite resistance, replace the K20 Engine Control Module.
  • If greater than 4.8 V
  1. Install a 3 A fused jumper wire between the signal circuit terminal 4 and the low reference circuit terminal 3.
  2. Verify the scan tool Fuel Level Sensor Right Tank parameter is less than 0.2 V.
  • If 0.2 V or greater
  1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
  2. Test for less than 1 V between the signal circuit and ground.
  • If 1 V or greater, repair the short to voltage on the circuit.
  • If less than 1 V
  1. Ignition OFF
  2. Test for less than 2 ohms in the signal circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the K20 Engine Control Module.
  • If less than 0.2 V
  1. Test or replace the B46B Fuel Level Sensor - Secondary.

Component Testing

  1. Ignition OFF, remove the appropriate Fuel Level Sender.
  2. Sweep the Fuel Level Sensor through its full range of motion while measuring resistance between the signal terminal 4 and the low reference terminal 3.
  3. Test for a minimum resistance value of 37-43 ohms and a maximum value of 245-255 ohms without any spikes or dropouts.
  • If minimum resistance is not 37-43 ohms, maximum resistance is not 245-255 ohms, or if there are any spikes or dropouts

Replace the appropriate Fuel Level Sensor.

  • If minimum resistance is 37-43 ohms, maximum resistance is 245-255 ohms, and if there are no spikes or dropouts
  1. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

  • Displays and Gauges Component Replacement Reference
  • Control Module References for engine control module or instrument cluster replacement, programming, and setup

DTC P0520: Engine oil pressure switch circuit

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category

DTC Descriptor

DTC P0520

Engine Oil Pressure Switch Circuit

Diagnostic Fault Information

Diagnostic Fault Information

Typical Scan Tool Data

ECM - Engine Oil Pressure Switch

ECM - Engine Oil Pressure Switch

Circuit/System Description

The engine oil pressure switch is a normally closed switch that opens with the proper oil pressure. With the ignition switch turned ON and the engine not running, the engine control module (ECM) should detect a low signal voltage input. With the engine running, the engine oil pressure switch opens and the ECM should detect a high signal voltage input. When the oil pressure is low, the ECM sends a message via serial data to the body control module (BCM). The BCM then sends a message via serial data to the instrument cluster requesting the engine oil pressure indicator turned ON.

Conditions for Running the DTC

The engine is running.

Conditions for Setting the DTC

  • The ECM detects that the engine oil pressure switch signal circuit is pulled low.
  • The above condition is present for greater than 10 sec.

Action Taken When the DTC Sets

The instrument cluster illuminates the service vehicle soon indicator and the oil pressure low indicator.

Conditions for Clearing the DTC

The DTC becomes history when the conditions for setting the DTC are no longer present.

Diagnostic Aids

DTC P0520 can set due to inadequate engine oil pressure. This can be an indication of mechanical engine issues causing lower than expected engine oil pressure.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

  • Instrument Cluster Description and Operation
  • Indicator/Warning Message Description and Operation
  • Driver Information Center (DIC) Description and Operation (base Instrument Cluster), Driver Information Center (DIC) Description and Operation (uplevel Instrument Cluster)

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (LUV) , Powertrain Diagnostic Trouble Code (DTC) Type Definitions (2H0)

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON.
  2. Command the All Indicators test ON and OFF with the scan tool, verify that the engine oil pressure indicator turns ON and OFF.
  • If the engine oil pressure indicator does not turn ON or OFF as commanded

Replace the P16 Instrument Cluster.

  • If the engine oil pressure indicator turns ON and OFF as commanded
  1. Verify the scan tool Engine Oil Pressure parameter is Low.
  • If not Low

Refer to Circuit/System Testing

  • If Low
  1. Engine running.
  2. Verify actual engine oil pressure is within specified range. Refer to Oil Pressure Diagnosis and Testing in Displays and Gauges Component Replacement Reference.
  3. Verify the scan tool Engine Oil Pressure parameter is OK.
  • If not OK

Refer to Circuit/System Testing.

  • If OK
  1. All OK.

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the B37 Engine Oil Pressure Switch, ignition ON.
  2. Verify the scan tool Engine Oil Pressure Switch parameter is OK.
  • If not OK
  1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
  2. Test for infinite resistance between the signal circuit terminal 1 (or A) and ground.
  • If less than infinite resistance, repair the short to ground on the circuit.
  • If infinite resistance, replace the K20 Engine Control Module.
  • If OK
  1. Install a 3 A fused jumper wire between the signal circuit terminal 1 (or A) and ground.
  2. Verify the scan tool Engine Oil Pressure Switch parameter is Low.

If not Low

  1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
  2. Test for less than 1 V between the signal circuit and ground.
  • If 1 V or greater, repair the short to voltage on the circuit.
  • If less than 1 V
  1. Test for less than 2 ohms in the signal circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the K20 Engine Control Module.
  • If Low
  1. Test or replace the B37 Engine Oil Pressure Switch.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

  • Displays and Gauges Component Replacement Reference
  • Control Module References for ECM replacement, programming and setup

DTC P0521: Engine oil pressure sensor performance malfunction

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0521

Engine Oil Pressure Sensor Performance Malfunction

Diagnostic Fault Information

Diagnostic Fault Information

Typical Scan Tool Data

ECM - Engine Oil Pressure Switch

ECM - Engine Oil Pressure Switch

Circuit/System Description

The engine oil pressure switch is a normally closed switch that opens with the proper oil pressure. With the ignition switch turned ON and the engine not running, the Engine Control Module (ECM) should detect a low signal voltage input. With the engine running, the Engine Oil Pressure Switch opens and the ECM should detect a high signal voltage input. When the oil pressure is low, the ECM sends a message via serial data to the body control module (BCM). The BCM then sends a message via serial data to the Instrument Cluster requesting the engine oil pressure indicator turned ON.

Conditions for Running the DTC

The engine is running.

Conditions for Setting the DTC

  • The ECM detects that the engine oil pressure switch signal circuit is pulled low.
  • The engine oil pressure is outside of a calculated working range determined by engine speed and temperature.
  • The above condition is present for greater than 10 seconds.

Action Taken When the DTC Sets

The Instrument Cluster illuminates the service vehicle soon indicator and the oil pressure low indicator.

Conditions for Clearing the DTC

The DTC becomes history when the conditions for setting the DTC are no longer present.

Diagnostic Aids

DTC P0521 can set if engine oil pressure is outside the calculated engine oil pressure model stored in the engine control module. This can be an indication of mechanical engine issues causing lower than expected engine oil pressure.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

  • Instrument Cluster Description and Operation
  • Indicator/Warning Message Description and Operation
  • Driver Information Center (DIC) Description and Operation (base Instrument Cluster), Driver Information Center (DIC) Description and Operation (uplevel Instrument Cluster)

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (LUV) , Powertrain Diagnostic Trouble Code (DTC) Type Definitions (2H0)

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool Engine Oil Pressure parameter is Low.
  • If not Low

Refer to Circuit/System Testing.

  • If Low
  1. Engine running.
  2. Verify the scan tool Engine Oil Pressure parameter is OK.
  • If not OK

Refer to Circuit/System Testing.

  • If OK
  1. All OK.

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the B37 Engine Oil Pressure Switch, ignition ON.
  2. Verify the scan tool Engine Oil Pressure Switch parameter is OK.

If not OK

  1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
  2. Test for infinite resistance between the signal circuit terminal 1 (or A) and ground.
  • If less than infinite resistance, repair the short to ground on the circuit.
  • If infinite resistance, replace the K20 Engine Control Module.
  • If OK
  1. Install a 3 A fused jumper wire between the signal circuit terminal 1 and ground.
  2. Verify the scan tool Engine Oil Pressure Switch parameter is Low.

If not Low

  1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
  2. Test for less than 1 V between the signal circuit and ground.
  • If 1 V or greater, repair the short to voltage on the circuit.
  • If less than 1 V
  1. Test for less than 2 ohms in the signal circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the K20 Engine Control Module.
  • If Low
  1. Test or replace the B37 Engine Oil Pressure Switch.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

  • Displays and Gauges Component Replacement Reference
  • Control Module References for ECM replacement, programming and setup

DISPLAYS AND GAUGES COMPONENT REPLACEMENT REFERENCE

Displays and Gauges Component Replacement Reference

Displays and Gauges Component Replacement Reference

Displays and Gauges Component Replacement Reference

SYMPTOMS - DISPLAYS AND GAUGES

NOTE: The following steps must be completed before using the symptom diagnostic tables.

  1. Before using the symptom diagnostic tables, perform the Diagnostic System Check - Vehicle
  2. Review the system operation in order to understand the system functions. Refer to the following description and operations:
  • Instrument Cluster Description and Operation
  • Indicator/Warning Message Description and Operation
  • Driver Information Center (DIC) Description and Operation (base Instrument Cluster),
  • Driver Information Center (DIC) Description and Operation (uplevel Instrument Cluster)
  • Audible Warnings Description and Operation

Visual/Physical Inspection

  • Inspect for aftermarket devices which can affect the operation of the instrument panel cluster or the audible warning systems. Refer to Checking Aftermarket Accessories
  • Inspect the accessible system components or the visible system components for obvious damage or for obvious conditions which can cause the symptom.
  • Inspect for the proper fluid levels.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

Gauges and Odometer

  • Instrument Cluster Gauges Malfunction (Encore only)
  • Fuel Gauge Malfunction
  • Speedometer and/or Odometer Malfunction (Encore only)

Indicators

  • Charge Indicator Malfunction
  • Engine Oil Pressure Indicator Malfunction

Driver Information Center

  • Driver Information Center Switch Malfunction
  • Outside Air Temperature Display Malfunction

Audible Warnings

Chime Malfunction

Charge indicator malfunction

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The engine Control Module (ECM) uses the generator turn ON signal circuit to control the load of the generator on the engine. A high side driver in the ECM applies voltage to the voltage regulator. This signals the voltage regulator to turn the field circuit ON and OFF. The ECM monitors the state of the generator turn ON signal circuit. The ECM should detect low voltage on the generator turn on signal circuit when the ignition is ON and the engine is OFF, or when the charging system malfunctions. With the engine running, the ECM should detect high voltage on the generator turn on signal circuit. The ECM performs key ON and RUN tests to determine the status of the generator turn on signal circuit. If a malfunction is detected the ECM will illuminate the charge indicator in the instrument cluster.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

Indicator/Warning Message Description and Operation

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON, engine running.
  2. Verify the scan tool Battery Voltage parameter is between 12.5-15.5 V.
  • If not 12.5-15.5 V

Refer to Charging System Test .

  • If 12.5-15.5 V
  1. Verify the charge indicator turns on and off when commanding the All Indicators test ON and OFF with the scan tool.
  • If the charge indicator always stays on or always stays off

Replace the P16 Instrument Cluster.

  • If the charge indicator turns on and off as commanded
  1. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for Instrument Cluster replacement, programming, and setup

CHIME MALFUNCTION

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category

Circuit/System Description

The radio generates the audible warnings. The instrument cluster, the body control module (BCM), the inflatable restraint sensing and diagnostic module (SDM) or the object alarm module request audible warnings via serial data.

Reference Information

Schematic Reference

Audible Warnings Schematics (Encore), Audible Warnings Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

Audible Warnings Description and Operation

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

NOTE: Before performing this diagnostics, make sure no indicators are illuminated after the instrument cluster performs a lamp test. If any indicators are illuminated after the bulb test, perform the indicator diagnostics before this diagnostics.

  1. Ignition ON.
  2. Verify all the radio speakers operate by adjust the radio balance and fade to each speaker.
  • If any speaker does not operate properly

Refer to Speaker Malfunction .

  • If the speakers operate properly
  1. Verify the scan tool Driver Seat Belt Status and Passenger Seat Belt Status parameters are Buckled when both front seat belts are buckled.
  • If not Buckled

Refer to Seat Belt Indicator Malfunction - Driver .

  • If buckled
  1. Verify the scan tool Headlamp On Switch parameter is Inactive when the headlamps are OFF.
  • If not Inactive

Refer to Headlamps Malfunction .

  • If Inactive
  1. Verify the scan tool Park Lamps Switch parameter is Inactive when the park lamp switch is OFF.
  • If not Inactive

Refer to Park, License, and/or Tail Lamps Malfunction .

  • If Inactive
  1. Verify the scan tool Left Turn Signal Switch and Right Turn Signal Switch parameters are Inactive while the turn signal switch is OFF.
  • If not Inactive

Refer to Turn Signal Lamps and/or Indicators Malfunction

  • If Inactive
  1. Verify the scan tool Park Brake Switch parameter is Inactive when the park brake is OFF.
  • If not Inactive

Refer to Park Brake System Diagnosis (Drum Brake) , Park Brake System Diagnosis (Disc Brake) .

  • If Inactive
  1. Verify that all scan tool parameters listed below are Inactive when all the doors are closed.
  • Driver Door Ajar Switch
  • Passenger Door Ajar Switch
  • Left Rear Door Ajar Switch
  • Right Rear Door Ajar Switch
  • If not Inactive

Refer to Door Ajar Indicator Malfunction .

  • If Inactive
  1. Verify the scan tool Key in Ignition Status parameter is Inactive when the key is out of the ignition.
  • If not Inactive

Refer to Circuit/System Testing.

  • If Active
  1. All OK

Circuit/System Testing

  1. Ignition ON, disconnect the harness connector at the S39 Ignition Switch while the ignition is ON.
  2. Verify a test lamp illuminates between the B+ circuit terminal 2 and ground.
  • If the test lamp does not illuminate and the circuit fuse is good

Test for less than 2 ohms in the B+ circuit end to end.

  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse.
  • If the test lamp does not illuminate and the circuit fuse is open
  1. Test for infinite resistance between the B+ circuit and ground.
  • If less than infinite resistance, repair the short to ground on the circuit.
  • If infinite resistance
  1. Test for infinite resistance between the signal circuit and ground.
  • If less than infinite resistance, repair the short to ground on the circuit.
  • If infinite resistance, replace the K9 Body Control Module.

If the test lamp illuminates

  1. Verify the scan tool Key in Ignition Status parameter is Inactive.

If not Inactive

  1. Disconnect the X3 harness connector at the K9 Body Control Module.
  2. Test for less than 1 V between the signal circuit terminal 4 and ground.
  • If 1 V or greater, repair the short to voltage on the circuit.
  • If less than 1 V, replace the K9 Body Control Module.

If Inactive

  1. Install a 3 A fused jumper wire between the signal circuit terminal 4 and the B+ circuit terminal 2.
  2. Verify the scan tool Key in Ignition Status parameter is Active.

If not Active

  1. Ignition OFF, disconnect the X3 harness connector at the K9 Body Control Module.
  2. Test for less than 2 ohms in the signal circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the K9 Body Control Module.
  • If Active
  1. Test or replace the S39 Ignition Switch.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for BCM or Radio replacement, programming and setup

Driver information center switch malfunction

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B3567 01

Info Display Select Switch Circuit Short to Battery

DTC B3567 02

Info Display Select Switch Circuit Short to Ground

DTC B3567 04

Info Display Select Switch Circuit Open

DTC B3567 59

Info Display Select Switch Circuit Protection Time-Out

Diagnostic Fault Information

Diagnostic Fault Information

Circuit/System Description

The driver information center switch is a multiplexed switch. Battery power is provided to the driver information center switch via the instrument cluster. The driver information center switch signal circuit is pulled up to battery voltage in the instrument cluster. The instrument cluster also provides the driver information center switch with a low reference. The switch input to the instrument cluster is pulled low when a switch is activated. The driver information center switch is a momentary contact switch that connects a series of resistors in a resistor ladder format. The instrument cluster monitors the driver information center switch signal circuit to determine the driver information center switch inputs. Each switch state Menu, Up, Down, Clear corresponds to a certain resistance value. The instrument cluster determines the switch pressed by the voltage drop across the resistors.

Conditions for Running the DTC

  • The ignition is in OFF, ACCESSORY or RUN position.
  • The system voltage is between 9-16 V.

Conditions for Setting the DTC

B3567 01

The instrument cluster detects that the driver information center switch signal circuit is shorted to battery.

B3567 02

The instrument cluster detects that the driver information center switch signal circuit is shorted to ground.

B3567 04

The instrument cluster detects that the driver information center switch signal circuit is open.

B3567 59

The instrument cluster detects that the driver information center switch is stuck.

Action Taken When the DTC Sets

The instrument cluster ignores the driver information center switch inputs.

Conditions for Clearing the DTC

The DTC will become history if the instrument cluster no longer detects a malfunction.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

Driver Information Center (DIC) Description and Operation (base Instrument Cluster), Driver Information Center (DIC) Description and Operation (uplevel Instrument Cluster)

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON.
  2. Verify the driver information center set, up and down function changes when pressing the set, up or down switch.
  • If the driver information center does not change

Refer to Set, Up and Down Switch Malfunction

  • If the driver information center changes
  1. Verify the driver information center menu function changes when pressing the menu switch.
  • If the driver information center does not change

Refer to Menu Switch Malfunction

  • If the driver information center changes
  1. All OK.

Circuit/System Testing

Menu Switch Malfunction

  1. Ignition ON.
  2. Test for 4.8-5.2 V between the signal circuit terminal 5 and ground.

If less than 4.8 V

  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
  2. Test for infinite resistance between the signal circuit and ground.
  • If less than infinite resistance, repair the short to ground on the circuit.
  • If infinite resistance
  1. Test for less than 2 ohms in the signal circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the P16 Instrument Cluster.
  • If greater than 5.2 V
  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster, ignition ON.
  2. Test for less than 1 V between the signal circuit and ground
  • If 1 V or greater, repair the short to voltage on the circuit.
  • If less than 1 V, replace the P16 Instrument Cluster.
  • If between 4.8-5.2 V
  1. Test for less than 10 ohms between the ground circuit terminal 3 and ground.
  • If 10 ohms or greater

Repair the open/high resistance in the circuit

  • If less than 10 ohms
  1. Test or replace the S78 Turn Signal/Multifunction Switch.

Set, Up and Down Switch Malfunction

  1. Ignition OFF and all vehicle systems OFF, disconnect the X1 harness connector at the S78 Turn Signal/Multifunction Switch, ignition ON.
  2. Test for less than 10 ohms between the low reference circuit terminal 6 and ground.
  • If 10 ohms or greater
  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
  2. Test for less than 2 ohms in the low reference circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the P16 Instrument Cluster.
  • If less than 10 ohms
  1. Test for 9.8-12.2 V between the signal circuit terminal 12 and ground.

If less than 9.8 V

  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
  2. Test for infinite resistance between the signal circuit and ground.
  • If less than infinite resistance, repair the short to ground on the circuit.
  • If infinite resistance
  1. Test for less than 2 ohms in the signal circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the P16 Instrument Cluster.
  • If greater than 12.2 V
  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster, ignition ON.
  2. Test for less than 1 V between the signal circuit and ground.
  • If 1 V or greater, repair the short to voltage on the circuit.
  • If less than 1 V, replace the P16 Instrument Cluster.
  • If between 9.8-12.2 V
  1. Test or replace the S78 Turn Signal/Multifunction Switch.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

  • Displays and Gauges Component Replacement Reference
  • Control Module References for instrument cluster replacement, programming and setup

Driver information center display malfunction

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The Instrument Cluster contains a Driver Information Center which displays vehicle information such as the engine coolant temperature, fuel level, vehicle speed, and other information based on the information received from various modules on the vehicle's serial data bus. The Driver Information Center illuminates a combination of indicators and messages to display the status of various vehicle systems.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

Instrument Cluster Description and Operation

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON.
  2. Verify no DTC is set.
  • If any DTC is set,

Diagnose any DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

  • If no DTCs are set
  1. Verify all indicators except the engine malfunction indicator illuminate and turn off as commanded when performing the All Indicators test with the scan tool.
  • If any indicators do not illuminate and turn off as commanded

Replace the P16 Instrument Cluster.

  • If all indicators respond properly
  1. Verify all segments illuminate when performing the Driver Information Center Segments test with the scan tool.
  • If any segments do not illuminate

Replace the P16 Instrument Cluster.

  • If all segments illuminate properly
  1. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for instrument cluster or ECM replacement, programming, and setup.

ENGINE OIL PRESSURE INDICATOR MALFUNCTION

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0520

Engine Oil Pressure Switch Circuit

Diagnostic Fault Information

Diagnostic Fault Information

Typical Scan Tool Data

ECM - Engine Oil Pressure Switch

ECM - Engine Oil Pressure Switch

Circuit/System Description

The engine oil pressure switch is a normally closed switch that opens with the proper oil pressure. With the ignition switch turned ON and the engine not running, the engine control module (ECM) should detect a low signal voltage input. With the engine running, the engine oil pressure switch opens and the ECM should detect a high signal voltage input. When the oil pressure is low, the ECM sends a message via serial data to the body control module (BCM). The BCM then sends a message via serial data to the instrument cluster requesting the engine oil pressure indicator turned ON.

Conditions for Running the DTC

The engine is running.

Conditions for Setting the DTC

  • The ECM detects that the engine oil pressure switch signal circuit is pulled low.
  • The above condition is present for greater than 10 sec.

Action Taken When the DTC Sets

The instrument cluster illuminates the service vehicle soon indicator and the oil pressure low indicator.

Conditions for Clearing the DTC

The DTC becomes history when the conditions for setting the DTC are no longer present.

Diagnostic Aids

DTC P0520 can set due to inadequate engine oil pressure. This can be an indication of mechanical engine issues causing lower than expected engine oil pressure.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

  • Instrument Cluster Description and Operation
  • Indicator/Warning Message Description and Operation
  • Driver Information Center (DIC) Description and Operation (base Instrument Cluster), Driver Information Center (DIC) Description and Operation (uplevel Instrument Cluster)

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (LUV)

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON.
  2. Command the All Indicators test ON and OFF with the scan tool, verify that the engine oil pressure indicator turns ON and OFF.
  • If the engine oil pressure indicator does not turn ON or OFF as commanded

Replace the P16 Instrument Cluster.

  • If the engine oil pressure indicator turns ON and OFF as commanded
  1. Verify the scan tool Engine Oil Pressure parameter is Low.
  • If not Low

Refer to Circuit/System Testing.

  • If Low
  1. Engine running.
  2. Verify actual engine oil pressure is within specified range. Refer to Oil Pressure Diagnosis and Testing in Displays and Gauges Component Replacement Reference.
  3. Verify the scan tool Engine Oil Pressure parameter is OK.
  • If not OK

Refer to Circuit/System Testing.

  • If OK
  1. All OK.

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the B37 Engine Oil Pressure Switch, ignition ON.
  2. Verify the scan tool Engine Oil Pressure Switch parameter is OK.

If not OK

  1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
  2. Test for infinite resistance between the signal circuit terminal 1 (or A) and ground.
  • If less than infinite resistance, repair the short to ground on the circuit.
  • If infinite resistance, replace the K20 Engine Control Module.
  • If OK
  1. Install a 3 A fused jumper wire between the signal circuit terminal 1 (or A) and ground.
  2. Verify the scan tool Engine Oil Pressure Switch parameter is Low.
  • If not Low
  1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
  2. Test for less than 1 V between the signal circuit and ground.
  • If 1 V or greater, repair the short to voltage on the circuit.
  • If less than 1 V
  1. Test for less than 2 ohms in the signal circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the K20 Engine Control Module.
  • If Low
  1. Test or replace the B37 Engine Oil Pressure Switch.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

  • Displays and Gauges Component Replacement Reference
  • Control Module References for ECM replacement, programming and setup

Fuel gauge malfunction

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The instrument cluster displays the fuel level based on the information from the engine control module (ECM).

The ECM converts the data from the fuel level sensors to a fuel level signal. The ECM sends the fuel level signal via a High Speed CAN-Bus signal to the body control module (BCM). The BCM then sends the information via a Low Speed CAN-Bus signal to the instrument cluster to display the fuel level. When the fuel level falls below 11% the instrument cluster illuminates the low fuel level indicator.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

Instrument Cluster Description and Operation

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON, perform the Instrument Cluster Gauge Sweep test with the scan tool, verify that the fuel level gauge sweeps from its low to high position.
  • If the fuel level gauge does not sweep

Replace the P16 Instrument Cluster.

  • If the fuel level gauge sweeps
  1. Command the All Indicators test ON and OFF with the scan tool, verify that the low fuel level indicator turns ON and OFF.
  • If the low fuel level indicator does not turn ON or OFF as commanded

Replace the P16 Instrument Cluster.

  • If the low fuel level indicator turns ON and OFF as commanded
  1. Observe the scan tool ECM Fuel Level Sensor parameter. The reading should be 0.5-3.5 V and vary with fuel level.
  • If the reading does not vary with fuel level

Refer to DTC P0461-P0464 (FWD), . for FWD or DTC P0461-P0464, P2066, P2067, or P2068 (AWD) for AWD.

  • If the reading varies with fuel level
  1. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for instrument cluster or ECM replacement, programming and setup

INSTRUMENT CLUSTER GAUGES MALFUNCTION (ENCORE)

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The instrument cluster displays the engine coolant temperature, fuel level, vehicle speed and the engine speed based on the information from the engine control module (ECM). The ECM sends information via a serial data to the body control module (BCM). The BCM then sends the information via serial data to the instrument cluster to display the engine coolant temperature, fuel level, the engine speed, the vehicle speed and the distance travelled, either in kilometers or miles, based on the vehicle requirements.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE

Description and Operation

Instrument Cluster Description and Operation

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Verify no DTC is set.
  • If any DTC is set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

  • If no DTCs are set
  1. Ignition ON, perform the Instrument Cluster Gauge Sweep test with the scan tool, verify that all gauges sweep from their low to high position.
  • If any gauge does not sweep

Replace the P16 Instrument Cluster.

  • If all gauges sweep
  1. Drive the vehicle, verify the gauge values matches the values on the scan tool.
  • If the values do not match

Replace the P16 Instrument Cluster.

  • If the values match the scan tool
  1. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for Instrument Cluster or ECM replacement, programming, and setup.

Odometer trip/reset switch malfunction (Encore)

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The instrument cluster displays the travelled distance based on the information from the engine control module (ECM). The ECM converts the data from the vehicle speed sensor to a distance signal. The ECM sends the distance information via serial data to the body control module (BCM). The BCM then sends the information via serial data to the instrument cluster to display the vehicle odometer and trip odometer. When the instrument cluster detects the activation of the trip stem and a press and hold of the stem, it resets the trip odometer information to zero.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

Instrument Cluster Description and Operation

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON.
  2. Verify the instrument cluster changes from odometer to trip when the odometer trip reset stem on the instrument cluster is pressed.
  • If the instrument cluster does not change from odometer to trip

Replace the P16 Instrument Cluster.

  • If the instrument cluster changes from odometer to trip
  1. Verify the instrument cluster resets the trip odometer display when the odometer trip reset stem on the cluster is pressed for approximately 2 seconds.
  • If the instrument cluster does not reset the trip odometer display

Replace the P16 Instrument Cluster.

  • If the instrument cluster resets the trip odometer display
  1. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for instrument cluster replacement, programming, and setup.

OUTSIDE AIR TEMPERATURE DISPLAY MALFUNCTION

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B0158 02

Ambient Air Temperature Sensor Circuit Short to Ground

DTC B0158 05

Ambient Air Temperature Sensor Circuit High Voltage/Open

Diagnostic Fault Information

Diagnostic Fault Information

Circuit/System Description

The instrument cluster monitors the ambient air temperature sensor with a low reference circuit and signal circuit. The instrument cluster monitors the voltage drop across the sensor, which is inversely proportional to temperature. When the ambient air temperature is cold, the resistance of the sensor is high. When the ambient air temperature is warm, the resistance of the sensors is low. The instrument cluster converts the voltage value to a temperature value and displays the temperature.

Conditions for Running the DTC

The system voltage is between 9-16 V.

Conditions for Setting the DTC

B0158 02

The instrument cluster detects the sensor signal is more than 88ºC (190ºF) .

B0158 05

The instrument cluster detects the sensor signal is less than -40ºC (-40ºF).

Action Taken When the DTC Sets

The instrument cluster uses a default air temperature value for further calculations. The instrument cluster will display -ºC (-ºF). A/C compressor engagement may be disabled.

Conditions for Clearing the DTC

The DTC will become history if the instrument cluster no longer detects a malfunction.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

Instrument Cluster Description and Operation

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool Ambient Air Temperature parameter is between -40ºC (-40ºF) and +88ºC (+190ºF) and changes with air temperature changes.
  • If not between -40ºC (-40ºF) and +88ºC (+190ºF) or changes with air temperature changes

Refer to Circuit/System Testing.

  • If between -40ºC (-40ºF) and +88ºC (+190ºF) and changes with air temperature changes
  1. Perform the Instrument Cluster Ambient Air Temperature Instant Update special function with the scan tool
  2. Verify the scan tool Ambient Air Temperature parameter is within five degrees of actual ambient air temperature.
  • If not within five degrees of actual ambient air temperature

Refer to Circuit/System Testing.

  • If within five degrees of actual ambient air temperature
  1. All OK.

Circuit/System Testing

  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the B9 Ambient Air Temperature Sensor. It may take up to 2 min for all vehicle systems to power down.
  2. Test for less than 10 ohms between the low reference circuit terminal B (or 2) and ground.

If 10 ohms or greater

  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
  2. Test for less than 2 ohms in the low reference circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the P16 Instrument Cluster.
  • If less than 10 ohms
  1. Ignition ON.
  2. Verify the scan tool Ambient Air Temperature parameter is greater than 98%.

If 98% or less

  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
  2. Test for infinite resistance between the signal circuit terminal A (or 1) and ground.
  • If less than infinite resistance, repair the short to ground on the circuit.
  • If infinite resistance, replace the P16 Instrument Cluster.
  • If greater than 98%
  1. Install a 3 A fused jumper wire between the signal circuit terminal A (or 1) and the low reference circuit terminal B (or 2).
  2. Verify the scan tool Ambient Air Temperature parameter is less than 8%.

If 8% or greater

  1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster, ignition ON.
  2. Test for less than 1 V between the signal circuit and ground.
  • If 1 V or greater, repair the short to voltage on the circuit.
  • If less than 1 V
  1. Ignition OFF
  2. Test for less than 2 ohms in the signal circuit end to end.
  • If 2 ohms or greater, repair the open/high resistance in the circuit.
  • If less than 2 ohms, replace the P16 Instrument Cluster.
  • If less than 8%
  1. Test or replace the B9 Ambient Air Temperature Sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

  • Displays and Gauges Component Replacement Reference
  • Control Module References for instrument cluster replacement, programming and setup

Speedometer and/or odometer malfunction (encore)

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The instrument cluster displays the engine coolant temperature, fuel level, vehicle speed and the engine speed based on the information from the engine control module (ECM). The ECM sends information via a High Speed CAN-Bus signal to the body control module (BCM). The BCM then sends the information via a Low Speed CAN-Bus signal to the instrument cluster to display the engine coolant temperature, fuel level, the engine speed, the vehicle speed and the distance travelled, either in kilometers or miles, based on the vehicle requirements. The instrument cluster will display dashes when its VIN does not match the VIN received from the BCM.

Diagnostic Aids

If the VIN mismatch is corrected the odometer will once again be displayed in the instrument cluster. If the vehicle is driven for a calibrated distance with a VIN mismatch, it will cause the instrument cluster odometer to enter into an error mode and lock itself. When this occurs the dashes will remain on the display even after correcting the VIN mismatch. The vehicle odometer status data display on the scan tool can be used to identify a locked odometer. The only way to unlock the instrument cluster (clear the dashes from the display) is to perform an SPS programming event. Failure to follow the diagnostic and programming procedures may result in either an improper odometer value or a module replacement.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE

Description and Operation

Instrument Cluster Description and Operation

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Verify no DTC is set.
  • If any DTC is set

Diagnose DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

  • If no DTCs are set
  1. Ignition ON, perform the Speedometer Sweep Test with the scan tool, verify the speedometer sweeps from low to high position.
  • If speedometer does not sweep

Replace the P16 Instrument Cluster.

  • If speedometer sweeps properly
  1. Drive the vehicle, verify the speedometer gauge value matches the Vehicle Speed parameter on the scan tool
  • If the values do not match

Replace the P16 Instrument Cluster.

  • If the speedometer value matches the scan tool parameter
  1. Drive the vehicle, verify the odometer display and the displayed distance counts up while driving.
  • If the odometer displays only "----" (dashes)

Refer to Circuit/System Testing.

  • If the odometer display does not count up

Replace the P16 Instrument Cluster.

  • If speedometer sweeps and displays the correct value, and the odometer display counts up
  1. All OK.

Circuit/System Testing

NOTE: If there are multiple modules not original to the vehicle and are not new correctly configured service parts, SPS may not be able to proper read or recover the vehicle odometer value. Follow government rules and documentation (including vehicle identification) regarding inaccurate/unknown odometer values.

Perform circuit/system verification first.

Instrument Cluster is Showing "----" (Dashes)

Correcting VIN mismatch - odometer is still Inactive.

  1. Verify the vehicle odometer status with a scan tool. The reading should be Inactive.
  • If the reading is Active

Refer to correcting VIN mismatch - odometer Active.

  • If the reading is Inactive
  1. Using the scan tool, verify the BCM VIN matches the vehicle VIN placard.
  • If the VIN does not match

Reprogram the BCM, then proceed to Step 3.

  • If the VIN matches
  1. Using the scan tool, verify the instrument cluster VIN matches the vehicle VIN placard.
  • If the VIN does not match

Reprogram the instrument cluster. Then proceed with step 4.

  • If the VIN matches
  1. Ignition ON, verify the instrument cluster is displaying the correct value.
  • If the instrument cluster is still displaying "----" (dashes)

Replace the P16 Instrument Cluster.

Instrument Cluster is Showing "----" (Dashes)

Correcting VIN mismatch - odometer is Active.

  1. Verify the vehicle odometer status with a scan tool. The reading should be Inactive.
  • If the reading is Inactive

Refer to Correcting VIN mismatch - odometer Inactive.

  • If the reading is Active
  1. Using the scan tool, verify the instrument cluster VIN matches the vehicle's VIN placard.
  • If the VIN does not match

Reprogram the Instrument Cluster. Then proceed with step 3.

  • If the VIN matches
  1. Perform the BCM setup procedure in SPS.
  2. Ignition ON, verify the instrument cluster is displaying the correct value.
  • If the instrument cluster is still displaying "----" (dashes)

Replace the P16 Instrument Cluster.

  • If instrument cluster is displaying the correct value
  1. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for instrument cluster, BCM or ECM replacement, programming, and setup

Tachometer inaccurate or inoperative (Encore)

Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The instrument cluster displays the engine coolant temperature, fuel level, vehicle speed and the engine speed based on the information from the engine control module (ECM). The ECM sends information via a High Speed CAN-Bus signal to the body control module (BCM). The BCM then sends the information via a Low Speed CAN-Bus signal to the instrument cluster to display the engine coolant temperature, fuel level, the engine speed, the vehicle speed and the distance travelled, either in kilometers or miles, based on the vehicle requirements.

Reference Information

Schematic Reference

Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Encore)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - Encore

Description and Operation

Instrument Cluster Description and Operation

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Verify no DTC is set.
  • If any DTC is set

diagnose DTCs first.

  • If no DTCs are set
  1. Ignition ON, perform the Tachometer Gauge Sweep test with the scan tool, verify tachometer sweeps from low to high position.

If tachometer does not sweep

replace the P16 Instrument Cluster.

If tachometer sweeps properly

  1. Engine running, verify the tachometer value matches the Engine Speed parameter on the scan tool.
  • If the value does not match

replace the P16 Instrument Cluster.

  • If the tachometer value matches the value displayed on the scan tool
  1. Replace the K20 Engine Control Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for instrument cluster or ECM replacement, programming, and setup.

    READ NEXT:

     Displays and Gauges - Repair instructions

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