B230D-REAR WIPER PARK SWITCH INPUT CIRCUIT LOW (STUCK LOW)

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

When Monitored:
With the ignition on.
Set Condition:
The Totally Integrated Power Module (TIPM) detects a short to ground on the Rear Wiper Park Switch Sense circuit.

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

1. INTERMITTENT CONDITION

1.	Turn the ignition on.

2.	With the scan tool, clear all DTCs.

3.	Turn the Rear Wipers on then off.

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. REAR WIPER MOTOR

1.	Turn the ignition off.

2.	Disconnect the Rear Wiper Motor harness connector.

3.	Turn the ignition on.

4.	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).

3. CHECK (W17) REAR WIPER PARK SWITCH SENSE CIRCUIT FOR A SHORT TO GROUND

1.	Turn the ignition off.

2.	Disconnect the TIPM C7 harness connector.

3.	Measure the resistance between ground and the (W17) Rear Wiper Park Switch Sense Circuit.

Is the resistance above 10k Ohms?

Yes

Repair the (W7) Wiper Park Switch Sense circuit for a short to ground.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).