Diagnostic Procedure
DIAGNOSTIC PROCEDURES - LOW BEAM HEADLAMPS WILL NO TURN OFF
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | Turn the headlamp switch to the off position. With the DRBIII®, read the Headlamp Switch Voltage. Does the DRBIII® display Headlamp Switch Voltage between 4.3 and 4.8 Volts? Yes --> Go To 2 No --> Replace the Multifunction Switch. Perform BODY VERIFICATION TEST - VER 1 . |
All |
| 2 | Remove the Headlamp Delay Relay from the junction block. Did the Low Beams turn off? All Yes --> Go To 3 No --> Repair the Headlamp Delay Relay Output Circuit for a short to voltage condition. Perform BODY VERIFICATION TEST - VER 1 . |
All |
| 3 | Substitute a known good relay in place of the Headlamp Delay Relay. Does the system operate normally? Yes --> Replace the Headlamp Delay Relay. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 4 |
All |
| 4 | Turn the ignition off. Remove the Headlamp Delay Relay. Remove the Body Control Module from the junction block. Measure the resistance of the Headlamp Delay Relay Control Circuit and ground. Is the resistance below 100.0 ohms? Yes --> Replace the Junction Block Perform BODY VERIFICATION TEST - VER 1 . No --> Replace the Body Control Module. Perform BODY VERIFICATION TEST - VER 1 . |
All |