Daytime Running Lamps (DRL) Headlamps Inoperative 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 |
Is the resistance greater than the specified value? | 31K ohms | Go to Step 3 | Go to Step 11 |
3 |
Is the resistance less than the specified value? | 23K ohms | Go to Step 4 | Go to Step 11 |
4 |
Is the voltage within the specified range? | 10-15 V | Go to Step 5 | Go to Step 14 |
5 |
Is the voltage within the specified range? | 10-15 V | Go to Step 15 | Go to Step 6 |
6 | Connect a fused jumper from the LCM connector C2 cavity G (ORN) to cavity D (DK BLU). Do the high beam headlamps light at a reduced intensity? | -- | Go to Step 10 | Go to Step 7 |
7 | Inspect for an open or short to ground in CKT 593 (DK BLU) between the LCM and the RH high beam headlamp. Refer to Testing for Continuity or Testing for Short to Ground in Wiring Systems. Is CKT 593 OK? | -- | Go to Step 8 | Go to Step 18 |
8 | Inspect for an open in CKT 11 (LT GRN) between the RH high beam headlamp and the LH high beam headlamp. Refer to Testing for Continuity in Wiring Systems. Is CKT 11 OK? | -- | Go to Step 9 | Go to Step 18 |
9 | Repair the open in CKT 1450 (BLK) between the LH high beam headlamp and S101. headlamp. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
10 | Replace the LCM. Is the repair complete? | -- | Go to Headlight System Check | -- |
11 | Inspect for an open or short to ground in CKT 278 (WHT/BLK or WHT) between the LCM and the ambient light sensor. Refer to Testing for Continuity or Testing for Short to Ground in Wiring Systems. Is CKT 278 OK? | -- | Go to Step 12 | Go to Step 18 |
12 | Inspect for an open in CKT 351 (BLK/WHT) between the ambient light sensor and S264. Refer to Testing for Continuity in Wiring Systems. Is CKT 351 OK? | -- | Go to Step 13 | Go to Step 18 |
13 | Replace the ambient light sensor. Refer to Defroster Grille Replacement in Instrument Panel, Gauges and Console. Is the repair complete? | -- | Go to Headlight System Check | -- |
14 | Repair the open in CKT 39 (PNK) between S258 and the LCM. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
15 | Disconnect the park/neutral position (PNP) switch connector. Do the high beam headlights turn on at reduced intensity? | -- | Go to Step 17 | Go to Step 16 |
16 | Repair the short to battery positive voltage (B+) in CKT 275 (LT GRN). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
17 | Replace the park/neutral position (PNP) switch. Refer to Park/Neutral Position Switch Replacement in Automatic Transaxle. Is the repair complete? | -- | Go to Headlight System Check | -- |
18 | Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
Daytime Running Lamps (DRL) Headlamps Inoperative Oldsmobile
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the entire Headlights System Check? | -- | Go to Step 2 | Go to Headlight System Check |
2 |
Is the voltage within the specified range? | 10-15V | Go to Step 3 | Go to Step 14 |
3 |
Is the resistance greater than the specified value? | 31Kohms | Go to Step 4 | Go to Step 11 |
4 |
Is the resistance less than the specified value? | 23Kohms | Go to Step 5 | Go to Step 11 |
5 |
Is the voltage within the specified range? | 10-15V | Go to Step 15 | Go to Step 6 |
6 | Connect a fused jumper from the LCM connector C2 cavity E (ORN) to cavity G (GRY). Do the low beam headlamps turn on at a reduced intensity? | -- | Go to Step 10 | Go to Step 7 |
7 | Inspect for an open in CKT 589 (GRY) between the LCM and the daytime running lamps (DRL) resistor. Refer to Testing for Continuity in Wiring Systems. Is CKT 589 OK? | -- | Go to Step 8 | Go to Step 18 |
8 | Inspect for an open in CKT 12 (TAN) between the DRL resistor and S120. Refer to Testing for Continuity in Wiring Systems. Is CKT 12 OK? | -- | Go to Step 9 | Go to Step 18 |
9 | Replace the DRL resistor. Refer to Daytime Running Lamps (DRL) Resistor Replacement . Is the repair complete? | -- | Go to Headlight System Check | -- |
10 | Replace the LCM. Is the repair complete? | -- | Go to Headlight System Check | -- |
11 | Inspect for a short to ground or open in CKT 278 (WHT/BLK or WHT) between the LCM and the ambient light sensor. Refer to Testing for Short to Ground or Testing for Continuity in Wiring Systems. Is CKT 278 OK? | -- | Go to Step 12 | Go to Step 18 |
12 | Inspect for an open in CKT 351 (BLK/WHT) between the ambient light sensor and S246. Refer to Testing for Continuity in Wiring Systems. Is CKT 351 OK? | -- | Go to Step 13 | Go to Step 18 |
13 | Replace the ambient light sensor. Refer to Defroster Grille Replacement in Instrument Panel, Gauges and Console. Is the repair complete? | -- | Go to Headlight System Check | -- |
14 | Repair the open in CKT 3 (PNK) between S224 and the LCM. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
15 | Disconnect the park/neutral position (PNP) switch connector. Do the low beam headlamps turn on at a reduced intensity? | -- | Go to Step 17 | Go to Step 16 |
16 | Repair the short to voltage in the CKT 275 (LT GRN) wiring. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
17 | Replace the PNP switch. Refer to Park/Neutral Position Switch Replacement in Automatic Transaxle. Is the repair complete? | -- | Go to Headlight System Check | -- |
18 | Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
