Diagnostic Test

Turn the ignition on.

With the Scan Tool, clear all TIPM DTC's.

Turn the Rear Wipers on.

With the Scan Tool, read the Rear Wiper DTC's.

Does the Scan Tool read: B230E-REAR WIPER PARK SWITCH INPUT CIRCUIT OPEN? 

Yes 

1. Go To  2).

No 

1. 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.
2. Perform BODY VERIFICATION TEST - VER 1 .

Turn the ignition off.

Disconnect the Rear Wiper Motor connector.

Disconnect the TIPM C2 harness connector.

Measure the resistance of the (W17) Rear Wiper Park Switch Sense circuit.

Is the resistance above 5.0 ohms? 

Yes 

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

No 

1. Replace the Totally Integrated Power Module in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .