*COURTESY LAMPS INOPERATIVE-OVERHEAD LAMPS
For a complete wiring diagram Refer to Section 8W
| Possible Causes |
| JUNCTION BLOCK |
| OPEN BULB |
| COURTESY LAMP DRIVER CIRCUIT OPEN |
Diagnostic Test
1. INTERMITTENT CONDITIONTurn the ignition on.
Turn the Courtesy Lamps on.
Verify that the Courtesy Lamps are inoperative.
Do the Courtesy Lamps operate normally?
Yes
- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires
- Perform BODY VERIFICATION TEST - VER 1.
No
- Go To2
2. OPEN BULB
Remove and inspect any inoperative courtesy lamp bulbs.
Are any of the inspected bulbs open or shorted?
Yes
- Replace the applicable open bulb.
- Perform BODY VERIFICATION TEST - VER 1.
No
- Go To3
3. COURTESY LAMP DRIVER CIRCUIT OPEN
Turn the ignition on.
Measure the voltage of the Courtesy Lamp Driver circuit to ground.
Is the voltage above 10.0 volts?
Yes
- Repair the Courtesy Lamps Driver circuit for an open condition.
- Perform BODY VERIFICATION TEST - VER 1.
No
- Replace the Junction Block.
- Perform BODY VERIFICATION TEST - VER 1.