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INTERIOR LIGHTING
Symptom:
DOME SWITCH INPUT OPEN-BCM
INTERMITTENT CONDITION
PANEL LAMPS DIMMER SIGNAL CIRCUIT OPEN
BODY CONTROL MODULE
HEADLAMP SWITCH
TEST
1
Turn the ignition on.
With the DRBIII , clear all BCM DTC's.
Turn the Dome Lamps on.
With the DRBIII , read the DTC information.
Does the DRBIII display: Dome Switch Input Open?
Yes → Go To 2
→ The condition that caused the symptom is currently not present.
No
2
Turn the ignition off.
Disconnect the Body Control Module C5 harness connector.
Disconnect the Headlamp Switch harness connector.
Measure the resistance of the Panel Lamps Dimmer Signal Circuit.
Is the resistance below 5.0 ohms?
Yes → Go To 3
→ Repair the Panel Lamps Dimmer Signal Circuit for an open
No
3
Turn the ignition off.
Disconnect the Body Control Module C5 harness connector.
Measure the voltage of the Panel Lamps Dimmer Signal circuit.
Is the voltage below 4.8 volts?
Yes → Replace the Body Control Module.
→ Replace the Headlamp Switch.
No
POSSIBLE CAUSES
ACTION
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.
condition.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
648
APPLICABILITY
All
All
All
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