Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Power Seat Systems Diagnostic System Check? | -- | Go to Step 2 | |
2 | Verify that the lumbar support is inoperative. Does the lumbar support operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the voltage measure near the specified value? | B+ | Go to Step 4 | Go to Step 8 |
4 | Test between the lumbar switch feed and ground circuits for voltage. Refer to Circuit Testing in wiring systems. Does the voltage measure near the specified value? | B+ | Go to Step 5 | Go to Step 10 |
5 | Test the lumbar motor control circuits 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 12 | Go to Step 6 |
6 |
Is voltage present? | -- | Go to Step 7 | Go to Step 11 |
7 | Replace the lumbar motor. Refer to Front Seat Back Replacement . Did you complete the replacement? | -- | Go to Step 12 | -- |
8 | Test for a high resistance or an open in the lumbar switch feed circuit. Refer to Circuit Testing and Wiring Repairs in wiring systems. Did you find and correct the condition? | -- | Go to Step 12 | Go to Step 9 |
9 | Test for a low resistance or a short to ground in the lumbar motor control circuits. Refer to Circuit Testing and Wiring Repairs in wiring systems. Did you find and correct the condition? | -- | Go to Step 12 | -- |
10 | Test for a high resistance or an open in the lumbar switch ground circuit. Refer to Circuit Testing and Wiring Repairs in wiring systems. Did you find and correct the condition? | -- | Go to Step 12 | Go to Step 11 |
11 | Replace the lumbar switch. Refer to Lumbar Switch Replacement . Did you complete the replacement? | -- | Go to Step 12 | -- |
12 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
