FCM-Wiper On-Off Relay Output Circuit High

FCM-WIPER ON-OFF RELAY OUTPUT CIRCUIT HIGH

FCM - Wiper On-Off Relay Output Circuit High:

POSSIBLE CAUSES
- Wiper on/off relay
- Front control module
- Power distribution center

1. INTERMITTENT CONDITION




Turn the ignition on.
With the DRBIII(R), clear all FCM DTC's.
Turn the Wipers ON than OFF.
With the DRBIII(R), read the DTC information.

Q: Does the DRBIII(R) read: Wiper ON-OFF Relay Output Circuit High?

YES: Go To 2
NO: 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. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2. WIPER ON/OFF RELAY




Turn the ignition off.
Remove the Wiper On/Off Relay from the IPM.
Turn the ignition on.
Activate the Wiper Switch to all speed positions.
With the DRBIII(R), read DTCs.

Q: Does the DRBIII(R) display: Wiper On/Off Relay Output Circuit High?

YES: Replace the Wiper On/Off Relay. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 3

3. POWER DISTRIBUTION CENTER




Turn the ignition off.
Remove the Wiper On/Off Relay from the IPM.
Remove the FCM from the IPM.
Measure the voltage between the Wiper On/Off Relay Control circuit and ground in the IPM.

Q: Is there any voltage present?

YES: Replace the Power Distribution Center (PDC). Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Front Control Module (FCM). Perform BODY VERIFICATION TEST - VER 1. Body Verification Test