Symptom:
FCM-WIPER PARK SWITCH INPUT PERFORMANCE
POSSIBLE CAUSES
INTERMITTENT CONDITION
WIPER MOTOR PARK SWITCH GROUND CIRCUIT OPEN
WIPER MOTOR
WIPER PARK SWITCH SENSE CIRCUIT SHORT TO VOLTAGE
WIPER PARK SWITCH SENSE CIRCUIT SHORT TO GROUND
WIPER PARK SWITCH SENSE CIRCUIT OPEN
POWER DISTRIBUTION CENTER
FRONT CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, clear all FCM DTC’s.
Turn the Wipers ON then OFF.
With the DRBIIIt, read the DTC information.
Does the DRBIIIt read: Wiper Park Switch Input Performance?
All
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.
2 Turn the ignition off.
Disconnect the Wiper Motor harness connector.
Measure the resistance between ground and the Wiper Motor Park Switch Ground
circuit.
Is the resistance above 5.0 ohms?
All
Yes → Repair the Wiper Motor Park Switch Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 3
3 Turn the ignition off.
Disconnect the Wiper Motor harness connector.
Measure the internal resistance of the Wiper Motor between terminal pin 2 and pin
3.
Is the resistance above 5.0 ohms?
All
Yes → Replace the Wiper Motor - Front in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 4
539
WINDSHIELD WIPER & WASHER
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