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.

- 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 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

- The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. (W17) WIPER PARK SWITCH SENSE CIRCUIT SHORTED TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Rear Wiper Motor harness connector.
3. Turn the ignition on.
4. Using a 12-volt test light connected to ground, probe the (W17) Rear Wiper Park Switch Sense circuit.

Does the test light illuminate brightly?

Yes

- Repair the (W17) Rear Wiper Park Switch Sense circuit for a short to voltage.
- 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 Switch Sense.

Does the Rear Wiper Park Switch Sense display: True?

Yes

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

No

- Go To 4

4. (W17) REAR WIPER PARK SWITCH SENSE CIRCUIT 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 10.0 Ohms?

Yes

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

No

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