Step | Action | Yes | No |
|---|---|---|---|
1 | Did you perform the Lighting Systems Diagnostic System Check? | Go to Step 2 | |
2 |
Does the scan tool display ON? | Go to Step 3 | Go to Step 10 |
3 |
Does the test lamp illuminate? | Go to Step 4 | Go to Step 15 |
4 | Connect a test lamp between the control circuit of the interior lamp relay and the coil side feed circuit of the interior lamp relay. Does the test lamp illuminate? | Go to Step 5 | Go to Step 7 |
5 | Probe the switch side feed circuit of the interior lamp relay with a test lamp that is connected to a good ground. Does the test lamp illuminate? | Go to Step 6 | Go to Step 15 |
6 | Connect a test lamp between the switch side feed circuit of the interior lamp relay and the switch side load circuit of the interior lamp relay. Does the test lamp illuminate? | Go to Step 8 | Go to Step 15 |
7 | Test the control circuit of the interior lamp relay for high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 17 |
8 | Inspect for poor connections at the interior lamp 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 23 | Go to Step 9 |
9 | Replace the in interior lamp relay. Did you complete the replacement? | Go to Step 23 | -- |
10 | With a scan tool, observe the interior lamp switch parameter in the instrument panel integration module (IPM) data list. Does the scan tool display ON? | Go to Step 17 | Go to Step 11 |
11 |
Does the scan tool display ON? | Go to Step 12 | Go to Step 13 |
12 |
Does the scan tool display ON? | Go to Step 21 | Go to Step 14 |
13 | Test the signal circuit of the interior lamp switch for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 19 |
14 | Repair the ground circuit of the interior lamp switch. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
15 | Inspect for poor connections at the rear fuse block. 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 23 | Go to Step 16 |
16 | Replace the rear fuse block. Did you complete the replacement? | Go to Step 23 | -- |
17 | Inspect for poor connections at the connector of the rear integration module (RIM). 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 23 | Go to Step 18 |
18 | Replace the rear integration module. Refer to Rear Integration Body Control Module Replacement in Body Control System. Did you complete the replacement? | Go to Step 23 | -- |
19 | Inspect for poor connections at the connector of the instrument panel integration module (IPM). 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 23 | Go to Step 20 |
20 | Replace the instrument panel integration module (IPM). Refer to Instrument Panel Module Replacement in Body Control System. Did you complete the replacement? | Go to Step 23 | -- |
21 | Inspect for poor connections at the connector of the headlamp 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 23 | Go to Step 22 |
22 | Replace headlamp switch. Refer to Headlamp Switch Replacement . Did you complete the replacement? | Go to Step 23 | -- |
23 | Operate the system in order to verify the repair. Did you correct the condition? | Go to Step 2 | System OK |
