C0042-28

C0042-28-BRAKE PEDAL POSITION SENSOR - SIGNAL BIAS LEVEL OUT OF RANGE / ZERO ADJUSTMENT FAILURE

For a complete wiring diagram, refer to the Wiring Information .

- When Monitored:
Ignition on, the first two minutes of driving above 40 km/h (25 mph).

- Set Condition:
If Anti-lock Brake System (ABS) Module did not see the correct conditions to ensure proper system operation in the first two minutes of driving.





NOTE: If any other DTCs are present, repair them first before continuing with this diagnostic procedure.

1. INITIALIZE ANTI-LOCK BRAKES SYSTEM (ABS) MODULE
1. Turn the ignition on.
2. With the scan tool, read and record the ABS DTCs.

WARNING: To avoid possible serious or fatal injury, check brake capability is available before road testing.

3. Initialize the ABS Module, Perform the ABS VERIFICATION TEST. ABS Verification Test.

NOTE: The ABS Module Initialization process must include driving the vehicle into a 90° turn.

4. Park the vehicle.

Was the ABS Module initialization successful?

Yes

- Go To 2

No

- Perform the ABS Module Initialization routine again, if still unsuccessful.
- Go To 3

2. VERIFY THE DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, erase the DTCs.

WARNING: To avoid possible serious or fatal injury, check brake capability is available before road testing.

3. Test drive the vehicle by turning the vehicle left and right in a curving manner at a velocity between 15 and 35 km/h (9 and 22 mph).
4. Park the vehicle.
5. With the scan tool, read ABS DTCs.

Is the DTC active at this time?

Yes

- Go To 3

No

- Test complete.

3. BRAKE PEDAL POSITION (BPP) SENSOR
1. Turn the ignition off to the lock position.
2. Replace the Brake Pedal Position Sensor. Dynamics Sensor - Removal.
3. Perform the ABS VERIFICATION TEST. ABS Verification Test.

WARNING: To avoid possible serious or fatal injury, check brake capability is available before road testing.

4. Test drive the vehicle by turning the vehicle left and right in a curving manner at a velocity between 15 and 35 km/h (9 and 22 mph).
5. With the scan tool, read the DTCs.

Does the DTC remain active?

Yes

- Replace the Anti-Lock Brake System (ABS) Module. Anti-Lock Brake System Module - Removal.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

No

- Test complete.