Courtesy Lamps Inoperative - All Lamps

Test 1 - 4:

Test 5 - 6:

SYMPTOM
COURTESY LAMP INOPERATIVE-ALL LAMPS

POSSIBLE CAUSES
- Courtesy Lamp Switch Sense Circuit Open
- Courtesy Lamp Driver Circuit Short To Voltage
- Inoperative Bulbs
- Open Used B+ Circuit
- Interior Lamp Defeat Circuit Short To Ground
- Central Timer Module
- Headlamp Switch