Symptom:
*READING & VANITY LAMPS INOPERATIVE
POSSIBLE CAUSES
BULBS
COURTESY LAMP DRIVER CIRCUIT OPEN
BCM, COURTESY LAMP DRIVER
TEST
ACTION
APPLICABILITY
1
Remove and check inoperative bulbs.
Are the bulbs OK?
All
Yes
→
Go To
2
No
→
Replace the bulbs.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn ignition off.
Disconnect the Junction Block C1 connector.
Gain access to an inoperative bulb.
Measure the Courtesy Lamp Driver circuit from the Junction Block C1 connector to
the bulb connector.
Is the resistance below 5.0 ohms?
All
Yes
→
Go To
3
No
→
Repair the open Courtesy Lamp Driver circuit or Switch.
Perform BODY VERIFICATION TEST - VER 1.
3
Turn the Dome Lamp Switch to the ON position.
Disconnect Fuse # 8 from the Junction Block.
While backprobing, measure the resistance of the Courtesy Lamp Driver circuit at
the Body Control Module C-1 connector cavity # 8.
Is the resistance below 5.0 ohms?
All
Yes
→
Test Complete.
No
→
Replace the defective Body Control Module (BCM).
Perform BODY VERIFICATION TEST - VER 1.
423
INTERIOR LIGHTING