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Interior Lamps Inoperative - All Lamps

Test 1 - 4:




Test 5 - 6:






SYMPTOM
INTERIOR LAMPS INOPERATIVE - ALL LAMPS

POSSIBLE CAUSES
- Courtesy lamp switch sense circuit short to ground
- Interior lamp driver circuit short to voltage
- Inoperative bulbs
- Open fused B+ circuit
- Interior lamp defeat circuit short to ground
- Central timer module
- Headlamp switch
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