Symptom:
FRONT WIPER PARK SWITCH SHORT TO GND
POSSIBLE CAUSES
FRONT CONTROL MODULE
FRONT WIPER MODULE
WIRING HARNESS INSPECTION
FRONT WIPER PARK SWITCH SENSE CIRCUIT SHORTED TO GROUND
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
Turn the Wipers on one of the intermittent settings.
With the DRB, select Body, Front Control Module, Inputs/Outputs and read the
Wiper Park Sw state.
Does the switch state change from Open to Closed during wiper operation?
All
Yes
→ Go To 2
No
→ Go To 3
2
Turn the ignition on.
With the DRBIII
t, erase all BCM and FCM DTCs.
Turn the ignition off.
NOTE: Visually inspect the related wiring harness and circuits. Look for
any chafed, pierced, pinched, or partially broken wires.
NOTE: Visually inspect the related wiring harness connectors. Look for
broken, bent, pushed out, or corroded terminals.
Note: Refer to any Technical Service Bulletins (TSB) that may apply.
Were any problems found?
All
Yes
→ Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
3
Turn the ignition off.
Disconnect the Front Wiper Module harness connector.
Disconnect the FCM from the IPM.
Measure the resistance between ground and the Front Wiper Park Switch Sense
circuit.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Front Wiper Park Switch Sense circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
1177
WINDSHIELD WIPER & WASHER