RAM 1500 Van V8-5.2L VIN Y (1999)
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Headlamp switch defective - Courtesy lamp function shorted
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Courtesy lamp driver circuit short to ground
Illuminated Entry Inoperative
SYMPTOM
* ILLUMINATED ENTRY INOPERATIVE
TEST NOTE
This symptom is diagnosed using the test * COURTESY LAMPS INOPERATIVE FROM BOTH FRONT DOORS
POSSIBLE CAUSES
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CTM defective - Courtesy lamp driver
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Courtesy lamp driver circuit open to splice
All Doors Failing to Lock & Unlock From Any Switch
SYMPTOM
* ALL DOORS FAILING TO LOCK & UNLOCK FROM ANY SWITCH
POSSIBLE CAUSES
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No response (CTM) / CCD bus failure
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CTM ground circuit open
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Fuse # 4 defective
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Fuse # 4 open
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Fused B (+) circuit open
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Fused B (+) circuit short to ground
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Door lock driver circuit short to ground
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Door unlock driver circuit short to ground
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CTM defective - lock & unlock function
All Doors Failing to Lock & Unlock From One Switch
SYMPTOM
* ALL DOORS FAILING TO LOCK & UNLOCK FROM ONE SWITCH
TEST NOTE
This symptom is diagnosed using the test DOOR LOCK SWITCH FAILURE
WHEN MONITORED
Continuously
SET CONDITION
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The CTM monitors the door lock switch circuits. If the input is pulled for more than 30 seconds, it assumes that the switch is defective.
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If the door lock switch is active for more than 30 seconds.
POSSIBLE CAUSES
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Fused B (+) circuit open
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Door lock switch output (lock) circuit short to battery
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Door lock switch output (lock) circuit open
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Door lock switch defective - open
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Left door lock switch defective - shorted
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Right door lock switch defective - shorted
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CTM defective - door lock switch output shorted
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CTM defective - door lock switch output open
All Doors Failing to Lock From Any Switch
SYMPTOM
* ALL DOORS FAILING TO LOCK FROM ANY SWITCH
POSSIBLE CAUSES
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Door lock driver circuit short to ground
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Door unlock driver circuit short to voltage
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Driver door misaligned
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CTM defective - lock function
All Doors Failing to Lock From One Switch