B231D

B231D-REAR WIPER MOTOR CONTROL CIRCUIT OPEN

B231D - Rear Wiper Motor Control Circuit Open:

WHEN MONITORED
With the ignition on.

SET CONDITION
When the FCM detects a short/low condition.

POSSIBLE CAUSES
- Integrated power module
- (W12) Rear wiper relay control circuit open
- Wiper relay

Diagnostic Test

1. (W12) REAR WIPER RELAY CONTROL CIRCUIT OPEN

NOTE: Check all applicable fuses prior to testing.

Disconnect the IPM C1 connector.
Measure the resistance of the (W12) Rear Wiper Relay Control circuit between the IPM and the Rear Wiper Relay.

Q: Is the resistance below 5.0 ohms?

YES: Repair the (W12) Rear Wiper Relay Control circuit for an open condition.
Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test

NO: Go To 2

2. INTEGRATED POWER MODULE

Turn the ignition off.
Replace the Rear Wiper relay with and known good relay.
With the Scan Tool, clear all FCM DTC's.
Turn the Wipers ON then OFF.
With the Scan Tool, read the FCM DTC's.

Q: Does the Scan Tool read: B231D-REAR WIPER MOTOR CONTROL CIRCUIT OPEN?

YES: Replace the Integrated Power Module.
Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Test complete.
Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test