Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Interior Lights Dimming Schematics | |||
1 | Did you review the Interior Lighting System Description and Operation and perform the necessary inspections? | Go to Step 2 | |
2 |
Are the interior backlighting lamps operating properly? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Are all the interior backlighting lamps inoperative? | Go to Step 4 | Go to Step 6 |
4 | Do the park lamps illuminate with the headlamp switch in the PARK position? | Go to Step 5 | Go to Park Lamps Inoperative |
5 | Inspect the IP DIMMER fuse. Is the fuse open? | Go to Step 14 | Go to Step 8 |
6 |
Does the test lamp illuminate? | Go to Step 7 | Go to Step 17 |
7 | Probe the backlighting ground circuit of the inoperative component with a test lamp that is connected to battery voltage. Does the test lamp illuminate? | Go to Step 11 | Go to Step 18 |
8 |
Does the test lamp illuminate? | Go to Step 15 | Go to Step 9 |
9 |
Does the test lamp illuminate? | Go to Step 10 | Go to Step 13 |
10 | Connect a fused jumper wire between the park lamp supply voltage circuit and the signal circuit of the IP dimmer switch . Refer to Circuit Testing in Wiring Systems. Do the backlighting lamps illuminate? | Go to Step 12 | Go to Step 16 |
11 | Inspect for poor connections at the harness connector of the inoperative lamp or component. 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 21 | Go to Step 19 |
12 | Inspect for poor connections at the harness connector of the IP dimmer 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 21 | Go to Step 20 |
13 | Repair the open in the park lamp supply voltage circuit of the IP dimmer switch. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 21 | -- |
14 | Repair the short to ground in the IP lamp supply voltage - 1 circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 21 | -- |
15 | Repair the open in the IP lamp supply voltage - 1 circuit . Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 21 | -- |
16 | Repair the open in the IP lamps dimmer switch circuit . Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 21 | -- |
17 | Repair the open in the IP lamp supply voltage - 1 circuit of the inoperative component. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 21 | -- |
18 | Repair the open in the backlighting ground circuit of the inoperative component. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 21 | -- |
19 | Replace the inoperative lamp or component. Did you complete the replacement? | Go to Step 21 | -- |
20 | Replace the IP dimmer switch. Refer to Headlamp Switch Replacement . Did you complete the replacement? | Go to Step 21 | -- |
21 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
