Diagnostic Aids
The daytime running lamp (DRL) system will not work if the parking brake is applied. The system is designed to work only when the engine is running and the parking brake is released. If the parking brake circuit is shorted to ground or the switch stays closed when the engine is running, the DRL system will not work.
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| 1 | Turn the headlamps ON with the headlamp switch. Do the headlamps work? |
- | Go to Step 3 | Go to Step 2 |
| 2 | Repair the regular headlamp system before completing this diagnostic table. Does the daytime running lamps (DRL) system work after the headlamps have been repaired? |
- | System OK | Go to Step 3 |
| 3 | With the DRL module still disconnected, use an ohmmeter to measure the resistance between ground and terminal 5 of the DRL module connector. Is the resistance equal to the specified value? |
0 Ω | Go to Step 5 | Go to Step 4 |
| 4 | Repair the circuit between ground and terminal 5 of the DRL module connector. Did you complete the repair? |
- | System OK | - |
| 5 |
|
- | Go to Step 6 | Go to Step 9 |
| 6 | Disconnect the electrical connector to the parking brake lever switch. Is the parking brake indicator lamp still ON? |
- | Go to Step 7 | Go to Step 8 |
| 7 | Repair the short to ground in the parking brake circuit. Did you complete the repair? |
- | System OK | - |
| 8 | Replace the parking brake lever switch. Did you complete the replacement? |
- | System OK | - |
| 9 |
|
0 V | Go to Step 11 | Go to Step 10 |
| 10 | Repair the open between fuse F4 and terminal 6 of the DRL module. Did you complete the repair? |
- | System OK | - |
| 11 | Replace the DRL module. Did you complete the replacement? |
- | System OK | - |