Symptom:
FCM-WIPER SPEED RELAY OUTPUT CIRCUIT LOW
POSSIBLE CAUSES
INTERMITTENT CONDITION
WIPER HIGH/LOW RELAY
POWER DISTRIBUTION CENTER
FRONT CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, clear all FCM DTC’s.
Actuate the Wipers in all speed positions.
With the DRBIIIt, read the DTC information.
Does the DRBIIIt read: Wiper Speed Relay Output Circuit Low?
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.
Install a substitute relay in place of the Wiper High/Low Relay.
Turn the ignition on.
Activate the Wiper Switch to all speed positions.
With the DRBIIIt, read DTCs.
Does the DRBIIIt display: Wiper Speed Relay Output Circuit Low?
All
Yes → Go To 3
No → Replace the Wiper High/Low Relay in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
3 Turn the ignition off.
Remove the Wiper High/Low Relay.
Remove the FCM from the IPM.
Measure the resistance between ground and the Wiper High/Low Relay Control
circuit in the IPM.
Is the resistance below 5.0 ohms?
All
Yes → Replace the Power Distribution Center (PDC) in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No → Replace the Front Control Module (FCM) in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
542
WINDSHIELD WIPER & WASHER
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