Headlamps - Low Beams On with Headlamp Switch Off Buick
Step | Action | Value(s) | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
1 | Did you perform the Headlights System Check? | -- | Go to Step 2 | Go to Headlight System Check | ||||
2 |
Do the headlamps go out? | -- | Go to Step 7 | Go to Step 3 | ||||
3 | Disconnect the headlamp dimmer switch connector C202. Do the headlamps go out? | -- | Go to Step 10 | Go to Step 4 | ||||
4 | Disconnect the lamp control module (LCM) connector C2. Do the headlamps go out? | -- | Go to Step 9 | Go to Step 5 | ||||
5 | Disconnect the LCM connector C1. Do the headlamps go out? | -- | Go to Step 9 | Go to Step 6 | ||||
6 | Repair the short to battery positive voltage (B+) in the following wiring:
Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- | ||||
7 | Inspect for a short to ground in CKT 103 (WHT). Refer to Testing for Short to Ground in Wiring Systems. Is CKT 103 OK? | -- | Go to Step 8 | Go to Step 12 | ||||
8 | Replace the headlamp switch. Refer to Instrument Cluster Trim Panel Replacement in Instrument Panel, Gauges and Console. Is the repair complete? | -- | Go to Headlight System Check | -- | ||||
9 | Replace the LCM. Is the repair complete? | -- | Go to Headlight System Check | -- | ||||
10 | Inspect for a short to ground in CKT 524 (PPL). Refer to Testing for Short to Ground in Wiring Systems. Is CKT 524 OK? | -- | Go to Step 11 | Go to Step 12 | ||||
11 | Replace the headlamp dimmer switch. Refer to Dimmer Switch Assembly - Disassemble - Off Vehicle or Dimmer Switch Assembly - Assemble - Off Vehicle in Steering Wheel and Column-Tilt. Is the repair complete? | -- | Go to Headlight System Check | -- | ||||
12 | Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
Headlamps - Low Beams On with Headlamp Switch Off Oldsmobile
Step | Action | Value(s) | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
1 | Did you perform the Headlights System Check? | -- | Go to Step 2 | Go to Headlight System Check | ||||
2 |
Do the headlamps go out? | -- | Go to Step 6 | Go to Step 3 | ||||
3 | Remove the headlamp relay position J from the RH IP fuse block. Do the headlamps go out? | -- | Go to Step 7 | Go to Step 4 | ||||
4 | Disconnect the lamp control module (LCM) connector C1. Do the headlamps go out? | -- | Go to Step 9 | Go to Step 5 | ||||
5 | Disconnect the headlamp dimmer switch connector C202. Do the headlamps go out? | -- | Go to Step 10 | Go to Step 12 | ||||
6 | Replace the headlamp switch. Refer to Instrument Cluster Trim Panel Replacement in Instrument Panel, Gauges and Console. Is the repair complete? | -- | Go to Headlight System Check | -- | ||||
7 | Inspect for a short to the battery positive voltage (B+) in CKT 10 (YEL). Refer to Testing for Continuity in Wiring Systems. Is CKT 10 OK? | -- | Go to Step 8 | Go to Step 13 | ||||
8 | Replace the headlamp relay position J in the RH IP fuse block. Is the repair complete? | -- | Go to Headlight System Check | -- | ||||
9 | Replace the LCM. Is the repair complete? | -- | Go to Headlight System Check | -- | ||||
10 | Inspect for a short to the battery positive voltage (B+) in CKT 1346 (LT BLU). Refer to Testing for Continuity in Wiring Systems. Is CKT 1346 OK? | -- | Go to Step 11 | Go to Step 13 | ||||
11 | Replace the headlamp dimmer switch. Refer to Dimmer Switch Assembly - Disassemble - Off Vehicle or Dimmer Switch Assembly - Assemble - Off Vehicle in Steering Wheel and Column-Tilt. Is the repair complete? | -- | Go to Headlight System Check | -- | ||||
12 | Repair the short to the battery positive voltage (B+) in the following wiring:
Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- | ||||
13 | Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
Headlamps - Low Beams On with Headlamp Switch Off Pontiac
Step | Action | Value(s) | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
1 | Did you perform the Headlights System Check? | -- | Go to Step 2 | Go to Headlight System Check | ||||
2 |
Do the headlamps go out? | -- | Go to Step 10 | Go to Step 3 | ||||
3 | Disconnect the lamp control module (LCM) connector C1. Do the headlamps go out? | -- | Go to Step 11 | Go to Step 4 | ||||
4 | Disconnect the headlamp dimmer switch connector C202. Do the headlamps go out? | -- | Go to Step 12 | Go to Step 5 | ||||
5 | Is the vehicle equipped with lamp monitoring? | -- | Go to Step 6 | Go to Step 14 | ||||
6 | Disconnect the following lamp monitor control module connectors:
Do the headlamps go out? | -- | Go to Step 7 | Go to Step 9 | ||||
7 | Inspect for a short to battery positive voltage (B+) in the following wiring:
Refer to Wiring Repairs in Wiring Systems. Is CKT 1312 or CKT 1311 OK? | -- | Go to Step 8 | Go to Step 9 | ||||
8 | Replace the lamp monitor control module. Refer to Instrument Panel Lamp Dimmer Replacement in Instrument Panel, Gauges and Console. Is the repair complete? | -- | Go to Headlight System Check | -- | ||||
9 | Repair the short to the battery positive voltage (B+) in the following wiring:
Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- | ||||
10 | Replace the headlamp switch. Refer to Instrument Cluster Trim Panel Replacement in Instrument Panel, Gauges and Console. Is the repair complete? | -- | Go to Headlight System Check | -- | ||||
11 | Replace the LCM. Is the repair complete? | -- | Go to Headlight System Check | -- | ||||
12 | Inspect for a short to the battery positive voltage (B+) in CKT 10 (YEL). Refer to Testing for Continuity in Wiring Systems. Is CKT 10 OK? | -- | Go to Step 13 | Go to Step 15 | ||||
13 | Replace the headlamp dimmer switch. Refer to DTC P1133 HO2S Insufficient Switching Sensor 1 in Steering Wheel and Column-Tilt. Is the repair complete? | -- | Go to Headlight System Check | -- | ||||
14 | Repair the short to the battery positive voltage (B+) in the following wiring:
Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- | ||||
15 | Repair the short to the battery positive voltage (B+) in CKT 10 (YEL). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
