Symptom:
*LOW BEAM HEADLAMPS WILL NOT TRN ON
POSSIBLE CAUSES
MULTIFUNCTION SWITCH
FUSE BLOCK
DIMMER SWITCH LOW BEAM OUTPUT CIRCUIT OPEN
INSTRUMENT CLUSTER
OPEN FUSED B+ TO FUSE BLOCK
FUSED B+ CIRCUIT SHORT TO GROUND
B+ CIRCUIT BREAKER 2
TEST ACTION APPLICABILITY
1 Turn the Headlamps on.
With the DRBIIIt read the Headlamp Switch voltage.
Does the DRBIIIt display Headlamp Switch voltage below 5.0 volts?
All
Yes → Go To 2
No → Replace the Multifunction Switch.
Perform BODY VERIFICATION TEST - VER 1.
2 Remove Circuit Breaker 2 from the Fuse Block.
Measure voltage of the Fused B+ circuit in the Circuit Breaker connector.
Is the voltage above 10.0 volts?
All
Yes → Go To 3
No → Replace the Fuse Block.
Perform BODY VERIFICATION TEST - VER 1.
3 Remove Circuit Breaker 2 from the Fuse Block.
Measure voltage of the Fused B+ Circuit in the Circuit Breaker connector.
Is the voltage above 10.0 volts?
All
Yes → Go To 4
No → Go To 5
4 Disconnect the Multifunction Switch harness connector.
Connect a 12 volt test light between the Dimmer Switch Low Beam Output Circuit
and the Fused B+ Circuit in the Multifunction Switch connector.
Did the test light illuminate brightly?
All
Yes → Repair the Dimmer Switch Low Beam Output Circuit for an open
condition.
Perform BODY VERIFICATION TEST - VER 1.
No → Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
137
EXTERIOR LIGHTING
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