Diagnostic Test

1) INTERMITTENT CONDITION
Turn the ignition on.

With the Scan Tool, clear all FCM 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 .
2) (W17) REAR WIPER PARK SWITCH SENSE CIRCUIT OPEN

Fig 1: Measuring Resistance Of Rear Wiper Park Switch Sense Circuit
Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the Rear Wiper Motor connector.

Disconnect the FCM C1 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 Front Control Module in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .