Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Inspect fuse D7-D6. Is the fuse open? | -- | Go to Step 2 | Go to Step 3 |
2 | Repair a short to ground in circuit 1239. Is the repair complete? | -- | -- | |
3 | Inspect fuse B3-B4. Is the fuse open? | -- | Go to Step 4 | Go to Step 5 |
4 | Repair a short to ground in circuit 41. Is the repair complete? | -- | -- | |
5 | Using a test light, backprobe the automatic headlamp control module harness connector C1 terminal D to ground. Did the test lamp light? | -- | Go to Step 6 | Go to Step 25 |
6 | Inspect for any diagnostic trouble codes (DTCs). Are any DTCs present? | -- | Go to Step 7 | |
7 |
Are the headlamps OFF? | -- | Go to Step 8 | |
8 | Using a test light, backprobe between the DRL control module harness connector C2 terminal C and ground. Does the test light illuminate? | -- | Go to Step 10 | Go to Step 9 |
9 | Repair a poor connection or an open in circuit 1239. Is the repair complete? | -- | -- | |
10 | Using a test light, backprobe between the automatic headlamp control module harness connector C2 terminal F to ground. Does the test light illuminate? | -- | Go to Step 12 | Go to Step 11 |
11 | Repair a poor connection or an open in circuit 41 between S223 and the automatic headlamp control module harness connector C2 terminal F. Is the repair complete? | -- | -- | |
12 | Using a test light, backprobe between the automatic headlamp control module harness connector C2 terminal C and terminal A. Does the test light illuminate? | -- | Go to Step 14 | Go to Step 13 |
13 | Repair a poor connection or an open in circuit 1750 between the automatic headlamp control module and G201. Does the test light illuminate? | -- | -- | |
14 | Using a DMM, test for continuity in circuit 10 between the body control module (BCM) connector C1 terminal D14 and the automatic headlamp control module harness connector C1 terminal F Is continuity in circuit 10? | -- | Go to Step 15 | Go to Step 26 |
15 | Using a test light, backprobe between B+ and the automatic headlamp control module harness connector C2 terminal E. Does the test light illuminate? | -- | Go to Step 16 | Go to Step 20 |
16 |
Does the test light illuminate? | -- | Go to Step 18 | Go to Step 17 |
17 | Adjust/replace the park indicator switch. Refer to Park Brake Cable Service/Adjustment in Park Brake. Is the repair complete? | -- | -- | |
18 | Repair a short to ground in circuit 1830. Is the repair complete? | -- | -- | |
19 | Replace the automatic headlamp control module. Refer to Headlamp Control Module Replacement . Is the repair complete? | -- | -- | |
20 | Cover the ambient light sensor with a dark cloth. Do the low beam headlamps and the park lamps come ON? | -- | Go to Step 22 | Go to Step 21 |
21 | Disconnect the ambient light sensor. Do the low beam headlamps and the park lamps turn ON? | -- | Go to Step 23 | Go to Step 22 |
22 | Using a DMM, test for a short to B+ in circuit 1137. Is a short to B+ in circuit 1137? | -- | Go to Step 24 | Go to Step 19 |
23 | Replace the ambient light sensor. Refer to Ambient Light Sensor Replacement . Is the repair complete? | -- | -- | |
24 | Repair a short to B+ in circuit 1137. Is the repair complete? | -- | -- | |
25 | Repair a poor connection or an open in circuit 3240 between S235 and the automatic headlamp control module harness connector C1 terminal D. Is the repair complete? | -- | -- | |
26 | Repair a poor connection or an open in circuit 10 between the automatic headlamp control module harness connector C1 terminal F and S221. Is the repair complete? | -- | -- |
