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.

Possible Causes
(W17) REAR WIPER PARK SWITCH SENSE CIRCUIT OPEN
(W17) REAR WIPER PARK SWITCH SENSE CIRCUIT SHORTED TO VOLTAGE
REAR WIPER MOTOR
TOTALLY INTEGRATED POWER MODULE

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

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. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

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. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

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 in accordance with the Service Information.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

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) in accordance with the Service Information.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

Repair the (W17) Rear Wiper Park Switch Sense circuit for an open.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).