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Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Engine running, observe the scan tool Engine Oil Pressure Sensor parameter. The reading should be between 0.3-4.8 V.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the B37B Engine Oil Pressure Sensor.

2. Ignition OFF, test for less than 10 ohm between the low reference circuit terminal 1 and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20

Engine Control Module.

3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 2 and ground.

瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,

replace the K20 Engine Control Module.

瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine

Control Module.

4. Verify the scan tool Engine Oil Pressure Sensor parameter is greater than 4.8 V.

瀚慖f less than the specified range, test the signal circuit terminal 3 for a short to ground. If the circuit tests normal, replace the K20 Engine

Control Module.

5. Install a 3 A fused jumper wire between the signal circuit terminal 3 and the low reference circuit terminal 1. Verify the scan tool Engine Oil

Pressure Sensor parameter is less than 0.3 V.

瀚慖f greater than the specified range, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal,

replace the K20 Engine Control Module.

6. If all circuits test normal, replace the B37B Engine Oil Pressure Sensor.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Engine Oil Pressure Sensor and/or Switch Replacement (LF1) (See: Engine, Cooling and Exhaust/Engine/Engine Lubrication/Oil Pressure

Sensor/Service and Repair)Engine Oil Pressure Sensor and/or Switch Replacement (LAU) (See: Engine, Cooling and

Exhaust/Engine/Engine Lubrication/Oil Pressure Sensor/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup and programming.

P0523

DTC P0521, P0522, or P0523

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0521

- Engine Oil Pressure Sensor Performance

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Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate driver seat motor listed below for which the DTC set:

* M50 seat front vertical motor

* M55 seat rear vertical motor

* M51 seat horizontal motor

* M56 seat back recline motor

2. Ignition ON, test for B+ between the 12 V reference circuit terminal 4 and ground.

瀚慖f less than the specified value, test the 12 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,

replace the K40 seat memory control module.

3. Test for 0.3 - 2 V between the signal circuit terminal 2 and ground.

瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the K40 seat memory control module.

瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K40 seat memory

control module.

4. If all circuits test normal, replace the seat motor.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Driver or Passenger Seat Cushion Frame Replacement (See: Body and Frame/Seats/Service and Repair/Removal and Replacement/Driver or

Passenger Seat Cushion Frame Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for seat memory control module replacement, setup,

and programming

With Memory A45

DTC B2425 or B2430 (With Memory A45)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B2425 0B

- Driver Seat Cushion Heater Circuit High Current

DTC B2425 0D

- Driver Seat Cushion Heater Circuit High Resistance

DTC B2425 0E

- Driver Seat Cushion Heater Circuit Low Resistance

DTC B2430 0B

- Passenger Seat Cushion Heater Circuit High Current

DTC B2430 0D

- Passenger Seat Cushion Heater Circuit High Resistance

DTC B2430 0E

- Passenger Seat Cushion Heater Circuit Low Resistance

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Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Ignition ON, observe the scan tool Vertical Wheel Acceleration parameters. The parameters should be 0 m/s(2) when the vehicle is parked on a

level surface.

Circuit/System Testing

1. Ignition ON, verify that DTC C0870 is not present.

瀚慖f the DTC is present, refer to DTC C0870 (See: C Code Charts/C0870) to diagnose that DTC prior to this diagnostic.

2. Ignition OFF, disconnect the harness connector at the appropriate B161 vertical suspension acceleration sensor.

3. Ignition OFF, open/close doors, and wait 60 seconds. Test for less than 5 ohm between the low reference circuit terminal C and ground.

瀚慖f greater than the specified value, test the low reference circuit for short to voltage or an open/high resistance. If the circuit tests normal,

replace the K19 Suspension Control Module.

4. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal A and ground.

瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,

replace the K19 suspension control module.

瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K19

suspension control module.

5. Test for 4.8-5.2 V between the signal circuit terminal B and ground.

瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the K19 suspension control module.

瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K19 suspension

control module.

6. If all circuits test normal, replace the B161 vertical suspension acceleration sensor. Verify the DTC does not reset. If the DTC resets, replace

the K19 suspension control module

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Electronic Suspension Front Vertical Accelerometer Replacement - Lower (See: Sensors and Switches/Sensors and Switches - Steering and

Suspension/Sensors and Switches - Suspension/Acceleration Sensor/Service and Repair/Electronic Suspension Front Vertical Accelerometer

Replacement - Lower)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for suspension control module replacement, setup

and programming

C0675

DTC C0670 or C0675

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC C0670 02

- Left Front Acceleration or Position Sensor Circuit Short to Ground

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Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information

Circuit/System Verification

1. verify DTC B097B 08 or B097B 61 is not set.

瀚慖f any of the DTCs are set, test or replace the S38 ignition mode switch.

2. With the brake pedal released, press the ignition mode switch once. The amber LED should illuminate and the vehicle should be in the

accessory power mode.

3. With the brake pedal released, press the ignition mode switch a second time or press and hold the ignition mode switch for 5 seconds. The

green LED should illuminate and the vehicle should be in the run power mode.

4. With the brake pedal pressed, press the ignition mode switch once. The green LED should illuminate and the vehicle should start.

Circuit/System Testing

1. Ignition OFF, disconnect the X1 harness connector at the K84 keyless entry control module.

2. Ignition ON, test for less than 1 V between the signal circuit terminal 11 and ground.

瀚慖f greater than the specified range, test the signal circuit for a short to voltage.

3. Ignition OFF, connect the X1 harness connector at the K84 keyless entry control module. Disconnect the harness connector at the S38

ignition mode switch.

4. Wait 2 minutes, test for less than 15 ohm between the low reference circuit terminal 7 and ground.

瀚慖f greater than specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K84

keyless entry control module.

5. Verify that a test lamp illuminates between signal circuit terminal 3 and ground.

瀚慖f the test lamp does not illuminate, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal,

replace the K84 keyless entry control module.

6. If all circuits test normal, test or replace the S38 ignition mode switch.

Component Testing

1. Ignition OFF, disconnect the harness at the S38 ignition mode switch.

2. With the button released, test for 4.5-5.5 Kohm between the signal terminal 3 and the low reference terminal 7.

瀚慖f not within the specified range, replace the S38 ignition mode switch.

3. With the button pressed, test for 1-1.5 Kohm between the signal terminal 3 and the low reference terminal 7.

瀚慖f not within the specified range, replace the S38 ignition mode switch.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Ignition and Start Switch Replacement (See: Powertrain Management/Ignition System/Sensors and Switches - Ignition System/Ignition

Switch/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning)for keyless entry control module replacement, setup,

and programming

B097C

DTC B0978, B097B, or B097C

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

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DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information with a scan tool. Verify DTC P06A3 is not set.

瀚慖f the DTC is set, refer to DTC P0641, P0651, P0697, or P06A3 (LF1) (See: P Code Charts/P0641/ECM).

2. Ignition ON, observe both Throttle Position Sensor voltage parameters with a scan tool. Verify the scan tool Throttle Position Sensor 1 and 2

parameters are between 1.0-4.0 V.

3. Perform the scan tool Throttle Sweep Test while observing the Throttle Position Sensors 1 and 2 Agree/Disagree parameter. The parameter

should display Agree.

4. Observe the DTC Information with a scan tool. DTCs P0121, P0122, P0123, P0222, P0223, and P2135 should not set.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the Q38 throttle body assembly.

2. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 5 ohm

between the low reference circuit terminal C and ground.

瀚慖f greater than the specified range, test the low reference circuit for a short to voltage, or an open/high resistance. If the circuit tests

normal, replace the K20 ECM.

3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal E and ground.

瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or open/high resistance. If the circuit tests normal,

replace the K20 ECM.

瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.

4. Test for less than 1 V between the TP sensor 1 signal circuit terminal D and ground.

瀚慖f greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.

5. Test for 4.8-5.2 V between the TP sensor 2 signal circuit terminal F and ground.

瀚慖f less than specified range, test the signal circuit for a short to ground, or an open/high resistance. If the circuit tests normal, replace the

K20 ECM.

瀚慖f greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.

6. Install a 3 A fused jumper wire between TP sensor 1 signal circuit terminal D and the 5 V reference circuit terminal E. Verify the scan tool

TP sensor 1 voltage parameter is greater than 4.8 V.

瀚慖f less than the specified range, test the signal circuit for a short to ground, or an open/high resistance. If the circuit tests normal, replace

the K20 ECM.

7. If all circuits test normal, test or replace the Q38 throttle body assembly.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.

* Throttle Body Assembly Replacement (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Throttle Body/Service and

Repair/Removal and Replacement)Throttle Body Assembly Replacement (LAU) (See: Powertrain Management/Fuel Delivery and Air

Induction/Throttle Body/Service and Repair/Removal and Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, programming, and setup

P0123

DTC P0121-P0123, P0222, P0223, or P2135 (LF1, LFW)

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Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information

Circuit/System Verification

Attempt to program a transmitter. Refer to Replacing Keys (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Service and

Repair/Replacing Keys). The transmitter should program.

Circuit/System Testing

1. Verify that the transmitter is the correct transmitter for the vehicle. This can be accomplished by comparing the part number printed on the

transmitter to the appropriate part number in the parts catalog.

瀚慖f not correct, replace the transmitter.

2. Attempt to program the transmitter. Refer to Replacing Keys (See: Accessories and Optional Equipment/Antitheft and Alarm

Systems/Service and Repair/Replacing Keys). The transmitter should program.

瀚慖f the transmitter does not program, replace the transmitter.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

Control Module References (See: Testing and Inspection/Programming and Relearning)for BCM replacement, setup, and programming

B3106

DTC B3106

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC B3106 00

- Keyless Entry Data Link

Circuit/System Description

The body control module (BCM) communicates with the remote control door lock receiver through the keyless entry serial data circuits. When any

button on the keyless entry transmitter is pressed, the transmitter sends a signal to the remote control door lock receiver. The remote control door

lock receiver sends a function request to the BCM, depending on which button is pressed on the transmitter. The BCM receives the message and

performs the appropriate function.

Conditions for Setting the DTC

The transmitter that is sending a signal to the remote control door lock receiver is different from those transmitters stored in the BCM.

Action Taken When the DTC Sets

No action is taken.

Conditions for Clearing the DTC

* A current DTC will clear when the fault is no longer present and the ignition switch is cycled.

* A history DTC will clear after 40 consecutive ignition cycles without a fault present.

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Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information

Circuit/System Verification

Insert the key into the driver door lock cylinder, turn the key to the unlock position while observing the scan tool Driver Door Key Cylinder Unlock

Switch parameter, the value should change from Inactive to Active.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the A23D door latch assembly-driver.

2. Ignition ON, verify the scan tool Driver Door Key Cylinder Unlock Switch parameter is Inactive.

瀚慖f not the specified value, test the signal circuit terminal listed below for a short to ground. If the circuits test normal, replace the S79D

window switch - driver.

* Right hand drive terminal 4

* Left hand drive terminal 9

3. If all circuits tests normal, test or replace the A23D door latch assembly-driver.

Component Testing

1. Ignition OFF, disconnect the harness connector at the A23D door latch assembly-driver.

2. Test for infinite resistance between the terminals listed below with the switch in the open position.

* Right hand drive terminal 4 and terminal 8

* Left hand drive terminal 9 and terminal 8

瀚慖f not the specified value, replace the A23D door latch assembly-driver.

3. Test for less than 2.0 ohm between the terminals listed below with the switch in the unlock position.

* Right hand drive terminal 4 and terminal 8

* Left hand drive terminal 9 and terminal 8

瀚慖f greater than the specified range, replace the A23D door latch assembly-driver.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Front Side Door Window and Multifunction Switch Replacement (See: Windows and Glass/Windows/Service and Repair/Front Side Door

Window and Multifunction Switch Replacement)

* Front Side Door Lock Replacement (See: Body and Frame/Locks/Door Locks/Service and Repair/Front Side Door Lock Replacement)

B2515

DTC B2515

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC B2515 5A

- Steering Column Lock Motor Feedback Circuit Not Plausible

Circuit/System Description

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Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Ignition ON, observe the scan tool Exterior Driver Door Handle Proximity Sensor parameter while pressing and releasing the driver door handle

lock switch. The value should change between Active and Inactive as the switch is pressed and released.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the A24D Door Handle Assembly-Driver.

2. Ignition ON, verify the scan tool Exterior Driver Door Handle Proximity Sensor parameter is Inactive.

瀚慖f not the specified value, test the signal circuit terminal 3 for a short to ground. If the circuit tests normal, replace the K84 Keyless Entry

Control Module.

3. If all circuits test normal, test or replace the A24D Door Handle Assembly-Driver.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Front Side Door Outside Handle Replacement (See: Body and Frame/Doors, Hood and Trunk/Doors/Front Door/Front Door Handle/Front

Door Exterior Handle/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for the keyless entry control module replacement,

setup and programming

B2530

DTC B2530

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC B2530 02

- Front Fog Lamps Control Circuit Short to Ground

Diagnostic Fault Information

Circuit/System Description

The front fog lamp relay is supplied with battery voltage at all times. The front fog lamp switch signal circuit is grounded momentarily by pressing

the front fog lamp switch. The body control module (BCM) energizes the front fog lamp relay by applying ground to the front fog lamp relay

control circuit. When the front fog lamp relay is energized, the relay switch contacts close and battery voltage is applied through the front fog lamp

fuse to the front fog lamp supply voltage circuit which illuminates the front fog lamps.

Conditions for Running the DTC

Front fog lamps activated

Conditions for Setting the DTC