Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Lumbar Support Schematics Important: This table assumes that the mechanical systems are clear and free of obstructions. | ||||
1 | Did you review the Lumbar Support Description and Operation? | -- | Go to Step 2 | |
2 | Operate the Lumbar/Bolster system. Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Are both the lumbar and the bolster inoperative? | -- | Go to Step 4 | Go to Step 6 |
4 |
Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 10 |
5 | Connect a test lamp between the ground circuit at the inoperative lumbar/bolster switch connector and battery positive voltage. Did the test lamp illuminate? | -- | Go to Step 8 | Go to Step 11 |
6 |
Does the test lamp illuminate for each motor direction available from the lumbar/bolster switch? | -- | Go to Step 9 | Go to Step 7 |
7 | Test the inoperative motor control circuits for a open or short to ground. Refer to Circuit Testing in Wiring Repairs. Did you find and correct the condition? | -- | Go to Step 14 | Go to Step 8 |
8 | Inspect for poor connections at the lumbar/bolster switch connector. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 14 | Go to Step 13 |
9 | Inspect for poor connections at the motor connector. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 14 | Go to Step 12 |
10 | Repair the open in the battery positive voltage circuit for the inoperative lumbar/bolster switch. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 14 | -- |
11 | Repair the open in the ground circuit for the inoperative lumbar/bolster switch. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 14 | -- |
12 | Replace the inoperative motor. Refer to Front Seat Lumbar Support Replacement . Did you complete the replacement? | -- | Go to Step 14 | -- |
13 | Replace the inoperative lumbar/bolster switch. Refer to Lumbar Switch Replacement . Did you complete the replacement? | -- | Go to Step 14 | -- |
14 | Operate the system to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
