B230E

B230E-REAR WIPER PARK SWITCH INPUT CIRCUIT HIGH (STUCK HIGH)





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

- When Monitored:
With the ignition on.

Rear Wiper requested

- Set Condition:
The Totally Integrated Power Module (TIPM) does not detect a change from High to Low voltage on the Rear Wiper Park Switch Sense Circuit.





1. INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all DTCs.
3. Cycle the Rear Wiper Switch on and off three times.
4. With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK THE (W17) REAR WIPER PARK SWITCH SENSE CIRCUIT FOR A SHORT TO VOLTAGE




1. Turn the ignition off.
2. Disconnect the Rear Wiper Motor harness connector.
3. Disconnect the TIPM C7 harness connector.
4. Turn the ignition on.
5. Measure the voltage between ground and the (W17) Rear Wiper Park Switch Sense circuit.

Is there any voltage present?

Yes

- Repair the short to voltage in the (W17) Rear Wiper Park Switch Sense circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK THE REAR WIPER MOTOR




1. Connect a jumper wire between the (W17) Rear Wiper Park Switch Sense circuit and ground.
2. With the scan tool, read the Rear Wiper Park Signal.

Does the Rear Wiper Park Signal display: Parked?

Yes

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

No

- Go To 4

4. CHECK THE (W17) REAR WIPER PARK SWITCH SENSE CIRCUIT FOR AN OPEN




1. Turn the ignition off.
2. Disconnect the TIPM C7 harness connector.
3. Measure the resistance of the (W17) Rear Wiper Park Switch Sense circuit between the Rear Wiper Motor harness connector and the TIPM C7 harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Replace the Totally Integrated Power Module (TIPM). Totally Integrated Power Module (TIPM) - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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