Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics | |||
1 | Did you review the headlamp operation and perform the necessary inspections? | Go to Step 2 | |
2 |
Do the low beam headlamps illuminate? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the test lamp illuminate? | Go to Step 4 | Go to Step 15 |
4 | Connect a fused jumper wire between the switch side input circuit and the switch side output circuit of the lighting relay. Do the low beam headlamps illuminate? | Go to Step 5 | Go to Step 8 |
5 |
Does the test lamp illuminate? | Go to Step 6 | Go to Step 16 |
6 | Connect a test lamp between the coil side voltage supply circuit and the coil side control circuit of the lighting relay. Does the test lamp illuminate? | Go to Step 12 | Go to Step 7 |
7 |
Does the test lamp illuminate? | Go to Step 13 | Go to Step 17 |
8 |
Does the test lamp illuminate? | Go to Step 9 | Go to Step 18 |
9 | Probe the coil side voltage supply circuit of the lighting high low relay with a test lamp that is connected to a good ground. Does the test lamp illuminate? | Go to Step 10 | Go to Step 19 |
10 | Connect a test lamp between the coil side voltage supply circuit and the coil side control circuit of the lighting high low relay. Does the test lamp illuminate? | Go to Step 14 | Go to Step 11 |
11 |
Does the test lamp illuminate? | Go to Step 13 | Go to Step 20 |
12 | Inspect for poor connections at the lighting relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 24 | Go to Step 21 |
13 | Inspect for poor connections at the multifunction switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 24 | Go to Step 22 |
14 | Inspect for poor connections at the lighting high low relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 24 | Go to Step 23 |
15 | Repair an open or high resistance in the switch side input circuit of the lighting relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 24 | -- |
16 | Repair an open or high resistance in the coil side voltage supply circuit of the lighting relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 24 | -- |
17 | Repair an open or high resistance in the coil side control circuit of the lighting relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 24 | -- |
18 | Repair an open or high resistance in the switch side low beam voltage supply circuit of the lighting high low relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 24 | -- |
19 | Repair an open or high resistance in the coil side voltage supply circuit of the lighting high low relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 24 | -- |
20 | Repair an open or high resistance in the coil side control circuit of the lighting high low relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 24 | -- |
21 | Replace the lighting relay. Did you complete the replacement? | Go to Step 24 | -- |
22 | Replace the multifunction switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle in Steering Wheel and Column. Did you complete the replacement? | Go to Step 24 | -- |
23 | Replace the lighting high low relay. Did you complete the replacement? | Go to Step 24 | -- |
24 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
