Daytime Running Lamps (DRL) Headlamps Inoperative DeVille
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Headlights System Check performed? | -- | Go to Step 2 | Go to Headlight System Check |
2 |
Is battery voltage measured? | -- | Go to Step 3 | Go to Step 5 |
3 | Measure the voltage to ground at the DRL relay connector terminal B9 (ORN/BLK). Is battery voltage measured? | -- | Go to Step 4 | Go to Step 6 |
4 |
Is battery voltage measured? | -- | Go to Step 7 | Go to Step 8 |
5 | Repair the open in CKT 439 (PNK). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
6 | Repair the open in CKT 1640 (ORN/BLK). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
7 | Connect a fused jumper between the DRL relay connector terminal B9 (ORN) and terminal A7 (PPL). Do the daytime running lamps turn on? | -- | Go to Step 9 | Go to Step 10 |
8 | Inspect CKT 592 (LT GRN/BLK) for an open. Refer to Testing for Continuity in Wiring Systems. Is CKT 592 OK? | -- | Go to Step 11 | Go to Step 15 |
9 | Replace the DRL relay. Is the repair complete? | -- | Go to Headlight System Check | -- |
10 | Inspect CKT 589 (PPL) for an open or short to ground. Refer to Testing for Continuity or Testing for Short to Ground in Wiring Systems. Is CKT 589 OK? | -- | Go to Step 12 | Go to Step 15 |
11 | Replace the body control module (PZM). Refer to Body Control Module Replacement in Body Control System. Is the repair complete? | -- | Go to Headlight System Check | -- |
12 | Inspect CKT 12 (TAN/WHT) for an open between the daytime running lamps (DRL) resistor and the DRL fuse. Refer to Testing for Continuity in Wiring Systems. Is CKT 12 OK? | -- | Go to Step 13 | Go to Step 15 |
13 | Inspect CKT 12 (TAN) for an open between S112 and the DRL fuse. Refer to Testing for Continuity in Wiring Systems. Is CKT 12 OK? | -- | Go to Step 14 | Go to Step 15 |
14 | Replace the DRL resistor. Refer to Daytime Running Lamps (DRL) Resistor Replacement . Is the repair complete? | -- | Go to Headlight System Check | -- |
15 | 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 Eldorado
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Headlights System Check performed? | -- | Go to Step 2 | Go to Headlight System Check |
2 |
Is battery voltage measured? | -- | Go to Step 3 | Go to Step 5 |
3 | Measure the voltage to ground at the DRL relay connector terminal B9 (ORN). Is battery voltage measured? | -- | Go to Step 4 | Go to Step 6 |
4 |
Is battery voltage measured? | -- | Go to Step 7 | Go to Step 8 |
5 | Repair the open in CKT 439 (PNK). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
6 | Repair the open in CKT 1640 (ORN). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
7 | Connect a fused jumper between the DRL relay connector terminal B9 (ORN) and terminal A7 (PPL/WHT). Do the daytime running lamps turn on? | -- | Go to Step 9 | Go to Step 10 |
8 | Inspect CKT 352 (LT GRN/BLK) for an open. Refer to Testing for Continuity in Wiring Systems. Is CKT 352 OK? | -- | Go to Step 11 | Go to Step 12 |
9 | Replace the DRL relay. Is the repair complete? | -- | Go to Headlight System Check | -- |
10 | Repair the open or short to ground in CKT 359 (PPL/WHT). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | -- |
11 | Replace the body control module (PZM). Refer to Body Control Module Replacement in Body Control Systems. 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 | -- |
