Rear Wiper Output Short To Ground-BCM

REAR WIPER OUTPUT SHORT TO GROUND-BCM





For a complete wiring diagram Consult Diagrams/Electrical





Diagnostic Test

1. CONDITION PRESENT
Ignition on, engine not running.
Turn on the Rear Wiper.
Does the Rear Wiper Function?

Yes

- Go To2

No

- Go To3

2. WIRING AND CONNECTORS
Turn the ignition on.
With the scan tool, erase all BCM DTCs.
Turn the ignition off.
The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
Wiggle the wiring while checking for shorts and open circuits.
Were there any problems found?

Yes

- Repair as necessary.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

No

- Test Complete.

3. (W13) REAR WIPER MOTOR CONTROL CIRCUIT




Turn the ignition off to the lock position.
Disconnect the Body Control Module C2 harness connector.
Disconnect the Rear Wiper Motor harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance between ground and the (W13) Rear Wiper Motor Control circuit.
Is the resistance less than 5.0 ohms?

Yes

- Repair the (W13) Rear Wiper Motor Control Circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

No

- Go To4

4. REAR WIPER MOTOR FUNCTION
Turn the ignition off to the lock position.
Disconnect the Body Control Module C2 harness connector.
Connect a 20A Fused jumper wire between B+ and the (W13) Rear Wiper Motor Signal circuit in the Body Control Module connector harness.

NOTE: An internal short in the Wiper Motor may cause the fuse to open.

Does the Wiper Motor function?

Yes

- Replace the Body Control Module.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

No

- Replace the Rear Wiper Motor.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test