Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Lumbar Support Schematics DEFINITION: This table assumes that the mechanical systems are clear and free of obstructions. | |||
1 | Did you perform the Power Seat Systems Diagnostic System Check? | Go to Step 2 | |
2 | Operate the lumbar system. Does the system operate normally? | 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 12 |
4 | Connect a test lamp between the ground circuit at the inoperative lumbar switch connector and battery positive voltage. Did the test lamp illuminate? | Go to Step 5 | Go to Step 13 |
5 |
Did the test lamp illuminate? | Go to Step 6 | Go to Step 8 |
6 |
Did the test lamp illuminate? | Go to Step 7 | Go to Step 9 |
7 |
Did the test lamp illuminate in both positions? | Go to Step 11 | Go to Step 10 |
8 | Test the lumbar IN motor control circuit for an open or short to ground . Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 16 | Go to Step 10 |
9 | Test the lumbar OUT control circuit for an open or short to ground . Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 16 | Go to Step 10 |
10 | Inspect for poor connections at the inoperative lumbar switch connector. 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 16 | Go to Step 15 |
11 | Inspect for poor connections at the inoperative lumbar motor connector. 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 16 | Go to Step 14 |
12 | Repair the open or short ground in the lumbar switch battery positive voltage circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 16 | -- |
13 | Repair the open in the lumbar switch ground circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 16 | -- |
14 | Replace the inoperative lumbar motor. Refer to Front Seat Adjuster Replacement . Did you complete the replacement? | Go to Step 16 | -- |
15 | Replace the inoperative lumbar switch. Refer to Lumbar Switch Replacement . Did you complete the replacement? | Go to Step 16 | -- |
16 | Operate the system to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |