Rear Wiper Park Input Open-BCM

REAR WIPER PARK INPUT OPEN-BCM





For a complete wiring diagram Consult Diagrams/Electrical





Diagnostic Test

1. INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, clear all BCM DTC's.
Turn the Rear Wipers ON.
With the scan tool, read the DTC information.
Does the scan tool read: Rear Wiper Park Switch Input Open?

Yes

- Go To2

No

- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

2. WIPER/WASHER SWITCH
Turn the ignition off.
Disconnect the Wiper/Washer Switch harness connector.
Ensure that the Wiper/Washer Switch is in the Off position.
Measure the internal resistance of the Wiper/Washer Switch between cavity 5 and cavity 7.
Does the Wiper/Washer Switch measure more than 5.0 ohms?

Yes

- Replace the Wiper/Washer Switch.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

No

- Go To3

3. (W17) REAR WIPER PARK SWITCH SENSE CIRCUIT OPEN




Turn the ignition off.
Disconnect the Rear Wiper Motor harness connector.
Disconnect the BCM C3 harness connector.
Measure the resistance of the (W17) Rear Wiper Park Switch Sense circuit.
Is the resistance above 5.0 ohms?

Yes

- Repair the (W17) Rear Wiper Park Switch Sense circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

No

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