Courtesy Lamp Inoperative With Left Rear Door

Test 1 - 3:

Test 4:

SYMPTOM
COURTESY LAMP INOPERATIVE WITH LEFT REAR DOOR

TEST NOTE
This symptom is diagnosed using the test OPEN PASSENGER (LEFT REAR) DOOR AJAR CIRCUIT.

POSSIBLE CAUSES
- Left rear door ajar closed switch defective (closed)
- LR door ajar closed switch sense circuit (open)
- Body control module DEF open input (cav6)
- Body 20-way connector defective (cav6)
- LR door switch ground strap corroded/damaged