Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Exterior Lights Schematics Connector End View Reference: Lighting Systems Connector End Views or Computer/Integrating Systems Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 | Verify that the off-road lamps are inoperative. Do the off-road lamps operate normally? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Is only one off-road lamp inoperative? | Go to Step 4 | Go to Step 6 |
4 | Test the supply voltage circuit of the inoperative lamp for high resistance, short to ground or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 21 | Go to Step 5 |
5 | Test the ground circuit of the inoperative lamp for high resistance, or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 21 | Go to Step 13 |
6 | Connect a test lamp between the battery positive voltage circuit of the off-road lamps switch, and a good ground. Does the test lamp illuminate? | Go to Step 7 | Go to Step 16 |
7 | Connect a 3-amp fused jumper wire between the battery positive circuit and the off-road lamp relay control circuit of the off-road lamps switch. Do the off-road lamps illuminate? | Go to Step 15 | Go to Step 8 |
8 | Connect a 3-amp fused jumper wire between the battery positive circuit and the off-road lamp supply voltage circuit of the off-road lamps relay. Do the off-road lamps illuminate? | Go to Step 9 | Go to Step 11 |
9 | Test the off-road lamp relay control circuit of the off-road lamps switch for high resistance, short to ground or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 21 | Go to Step 10 |
10 | Test the ground circuit of the off-road lamps relay for high resistance, or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 21 | Go to Step 11 |
11 | Test the battery positive voltage circuit of the off-road lamps relay for high resistance, or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 21 | Go to Step 12 |
12 | Test the ground circuit of the off-road lamps for high resistance, or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 21 | Go to Step 17 |
13 | Inspect for poor connections at the harness connector of the off-road lamp. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 21 | Go to Step 18 |
14 | Inspect for poor connections at the harness connector of the off-road lamps relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 21 | Go to Step 19 |
15 | Inspect for poor connections at the harness connector of the off-road lamps switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 21 | Go to Step 20 |
16 | Repair the battery positive voltage circuit of the off-road lamps switch. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 21 | -- |
17 | Repair the supply voltage circuit of the off-road lamps. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 21 | -- |
18 | Replace the inoperative off-road lamp. Refer to Off Road Lamp Bulb Replacement . Did you complete the replacement? | Go to Step 21 | -- |
19 | Replace the inoperative off-road lamps relay. Refer to Relay Replacement . Did you complete the replacement? | Go to Step 21 | -- |
20 | Replace the off-road lamps switch. Refer to Off Road Lamp Switch Replacement . Did you complete the replacement? | Go to Step 14 | -- |
21 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
