Symptom:
FCM-LEFT HIGHBEAM OUTPUT CIRCUIT LOW
POSSIBLE CAUSES
INTERMITTENT CONDITION
LEFT HIGHBEAM OUTPUT CIRCUIT SHORT TO GROUND
FRONT CONTROL MODULE
POWER DISTRIBUTION CENTER
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, clear all FCM DTC’s.
Turn the High Beams Lamps on.
With the DRBIIIt, read the DTC information.
Does the DRBIIIt read: Left Highbeam 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.
Disconnect the IPM C7 harness connector.
Measure the resistance between ground and the Left Highbeam Output circuit.
Is the resistance below 5.0 ohms?
All
Yes → Go To 3
No → Repair the Left Highbeam Output circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
3 Turn the ignition off
Disconnect the FCM connector.
Disconnect the IPM C7 harness connector.
Measure the resistance between ground and the Left Highbeam Output circuit in the
IPM.
Is the resistance below 5.0 ohms?
All
Yes → Replace the Power Distribution Center(PDC).
Perform BODY VERIFICATION TEST - VER 1.
No → Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
332
EXTERIOR LIGHTING
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