Headlamps - Low Beams On with Headlamp Switch Off DRL Off
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Disconnect the headlamp switch. Did the headlamps turn off? | -- | Go to Step 3 | Go to Step 2 |
2 | Backprobe the lighting relay with a test lamp from terminal 86 to B+. Did the test lamp light? | -- | Go to Step 4 | Go to Step 5 |
3 | Replace the headlamp switch. Is the repair complete? | -- | System OK | -- |
4 | Repair the short to ground in CKT 717 or CKT 718 (RED/BLK) between the headlamp switch, diode module 2, and the lighting relay. Did the headlamps turn off? | -- | System OK | -- |
5 | Disconnect the lighting relay. Did the headlamps turn off? | -- | Go to Step 6 | Go to Step 7 |
6 | Connect a test lamp from lighting relay connector terminal 87A to B+. Did the test lamp light? | -- | Go to Step 8 | Go to Step 9 |
7 | Repair the short to ground in CKT 691 or CKT 697 (RED/BLK) between the left headlamp, the right headlamp, and the lighting relay. Is the repair complete? | -- | System OK | -- |
8 | Disconnect the DRL Off relay. Did the headlamps turn off? | -- | Go to Step 10 | Go to Step 11 |
9 | Replace the lighting relay. Is the repair complete? | -- | System OK | -- |
10 | Replace the DRL Off relay. Is the repair complete? | -- | System OK | -- |
11 | Disconnect the DRL On relay. Did the headlamps turn off? | -- | Go to Step 12 | Go to Step 13 |
12 | Repair the short to ground in CKT 741 (BLK/GRN) between the DRL Off relay and the DRL On relay. Is the repair complete? | -- | System OK | -- |
13 | Disconnect the DRL series dropping resistor. Did the headlamps turn off? | -- | Go to Step 14 | Go to Step 15 |
14 | Inspect for a short to ground in CKT 729 (RED/BLK) between the DRL series dropping resistor and the DRL on relay. Is the connection OK? | -- | Go to Step 16 | Go to Step 17 |
15 | Repair the short to ground in CKT 715 (RED/YEL) between the lighting relay and the DRL series dropping resistor. Is the repair complete? | -- | System OK | -- |
16 | Replace the DRL series dropping resistor. Is the repair complete? | -- | System OK | -- |
17 | Repair the connection. Is the repair complete? | System OK | -- |
Headlamps - Low Beams On with Headlamp Switch Off During DRL Operation
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 |
Did the test lamp light? | -- | ||
2 | Inspect for a short to ground in CKT 717 (RED/BLK) between the lighting relay and the headlamp switch. Does a short to ground exist? | -- | ||
3 |
Are the headlamps lit? | -- | ||
4 | Repair the short to ground in CKT 717 (RED/BLK) between the lighting relay and the headlamp switch. Is the repair complete? | -- | System OK | -- |
5 | Replace the headlamp switch. Is the repair complete? | -- | System OK | -- |
6 | Inspect for a short to ground in CKT 715 (RED/YEL) between the lighting relay and the DRL series dropping register. Does a short to ground exist? | -- | ||
7 | Replace the DRL series dropping resistor. Is the repair complete? | -- | System OK | -- |
8 | Repair the short to ground in CKT 715 (RED/YEL) between the lighting relay and the DRL series dropping register. Is the repair complete? | -- | System OK | -- |
9 | Replace the lighting relay. Is the repair complete? | -- | System OK | -- |
