Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Exterior Lights Schematics | |||
1 | Did you review the exterior lighting description and operation and perform the necessary inspections? | Go to Step 2 | |
2 | Place the headlamp switch in the PARK position. Do the park lamps 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 10 |
4 | Connect a 20 amp fused jumper wire between the battery positive voltage circuit of the lighting relay and the park lamp supply voltage circuit of the lighting relay. Do the park lamps illuminate? | Go to Step 5 | Go to Step 7 |
5 |
Does the test lamp illuminate? | Go to Step 6 | Go to Step 11 |
6 | Connect a test lamp between the headlamp switch park lamp signal circuit of the lighting relay and the ground circuit of the lighting relay. Does the test lamp illuminate? | Go to Step 9 | Go to Step 12 |
7 | Does the fuse in the jumper wire open? | Go to Step 13 | Go to Step 8 |
8 |
Does the test lamp illuminate? | Go to Step 14 | Go to Step 15 |
9 | 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 17 | Go to Step 16 |
10 | Repair an open, high resistance, or short to ground in the battery positive voltage circuit of the lighting relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 17 | -- |
11 | Repair an open, high resistance, or short to ground in the headlamp switch park lamp signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 17 | -- |
12 | Repair an open or high resistance in the ground circuit of the lighting relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 17 | -- |
13 | Repair a short to ground in the park lamps supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 17 | -- |
14 | Repair an open or high resistance in the ground circuit of the park lamps. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 17 | -- |
15 | Repair an open in the park lamps supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you correct the condition? | Go to Step 17 | -- |
16 | Replace the lighting relay. Did you complete the repair? | Go to Step 17 | -- |
17 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
