Headlamps Inoperative - High Beams Buick
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Headlight System Check? | -- | Go to Step 2 | Go to Headlight System Check |
2 |
Do the headlights switch from low beams to high beams? | -- | Go to Step 5 | Go to Step 3 |
3 |
Do the high beams light? | -- | Go to Step 7 | Go to Step 4 |
4 | Repair the open in CKT 11 (LT GRN) between the LCM and S142. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
5 | Test for an open in CKT 351 (BLK/WHT) between S263 and the headlamp dimmer switch connector C202. Refer to Testing for Continuity in Wiring Systems. Is CKT 351 OK? | -- | Go to Step 6 | Go to Step 9 |
6 | Replace the headlamp dimmer switch. Is the repair complete? | -- | Go to Headlight System Check | -- |
7 | Test for an open in CKT 524 (PPL) between the LCM and the headlamp dimmer switch connector C202. Refer to Testing for Continuity in Wiring Systems. Is CKT 524 OK? | -- | Go to Step 8 | Go to Step 9 |
8 | Replace the LCM. Is the repair complete? | -- | Go to Headlight System Check | -- |
9 | Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
Headlamps Inoperative - High Beams Oldsmobile
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Headlight System Check? | -- | Go to Step 2 | Go to Headlight System Check |
2 | Use a J 39200 digital multimeter (DMM) in order to backprobe the headlamp dimmer switch connector C202 between cavity E10 (RED) and ground. Is the voltage within the specified range? | 10-15 V | Go to Step 3 | Go to Step 5 |
3 |
Do the high beam headlights illuminate? | -- | Go to Step 4 | Go to Step 6 |
4 | Replace the headlamp dimmer switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle in Steering Wheel and Column - Tilt. Is the repair complete? | -- | Go to Headlight System Check | -- |
5 | Repair the open in CKT 42 (RED) between S221 and the headlamp dimmer switch connector C202. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
6 | Repair the open in CKT 11 (LT GRN) between the headlamp dimmer switch connector C202 and S142. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
