Diagnostic Procedure
DIAGNOSTIC INFORMATION AND PROCEDURES CHART (COURTESY LAMPS INOPERATIVE - ALL LAMPS)
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | Remove the dome lamp lens. Remove and ensure the bulb is good. Using a 12-volt test light connected to ground, check the Fused B+ circuit. Does the test light illuminate brightly? Yes --> Go To 2 No --> Repair the Fused B+ Circuit for an open condition. Perform BODY VERIFICATION TEST - VER 1 . |
All |
| 2 | Disconnect the Instrument Cluster. Connect a jumper wire between the Courtesy Lamp Feed Circuit and ground. Observe the Dome Lamp. Does the test light illuminate brightly? Yes --> Replace the Instrument Cluster. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 3 |
All |
| 3 | Remove the dome lamp bulb. Disconnect the Instrument Cluster. Connect a jumper wire between the Courtesy Lamp Feed Circuit in the Instrument Cluster connector and ground. Measure resistance of the Courtesy Lamp Feed Circuit from the Dome Lamp to the Instrument Cluster connector. Is the resistance below 5.0 ohms? Yes --> Repair the Courtesy Lamp Feed Circuit for an open condition. Perform BODY VERIFICATION TEST - VER 1 . No --> The condition that caused this 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 . |
All |