Courtesy Lamps Inoperative-Overhead Lamps

Possible Causes:

• Intermittent Condition
• Junction Block
• Open Bulb
• Courtesy Lamp Driver Circuit Open

Testing

1. Turn the ignition on. Turn the Courtesy Lamps on. Verify that the Courtesy Lamps are inoperative. Do the Courtesy Lamps operate normally? If 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  . If no, go to next step.
2. Remove and inspect any inoperative courtesy lamp bulbs. Are any of the inspected bulbs open or shorted? If yes, replace the applicable open bulb. Perform BODY VERIFICATION TEST  . If no, go to next step.
3. Turn the ignition on. Measure the voltage of the Courtesy Lamp Driver circuit to ground. Is the voltage above 10.0 volts? If yes, repair the Courtesy Lamps Driver circuit for an open condition. Perform BODY VERIFICATION TEST  . If no, replace the Junction Block. Perform BODY VERIFICATION TEST  .