Lumbar Support Does Not Move Up or Down w/o A45
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Lumbar Support Schematics Connector End View Reference: Power Seat Connector End Views | |||
1 | Did you review the power seat system operation and perform the necessary inspection? | Go to Step 2 | Go to Symptoms - Seats |
2 | Verify that the Lumbar Support Does Not Move Up or Down complaint is present. Does the lumbar support system operate as described in the system description and operation? | 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 6 |
4 |
Does the test lamp illuminate? | Go to Step 5 | Go to Step 7 |
5 |
Does the test lamp illuminate in both directions? | Go to Step 9 | Go to Step 8 |
6 | Test the lumbar motor up control circuit for 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 8 |
7 | Test the lumbar motor down control circuit for 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 8 |
8 | Inspect for poor connections at the harness connector of the lumbar 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 12 | Go to Step 10 |
9 | Inspect for poor connections at the harness connector of the lumbar vertical motor. 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 12 | Go to Step 11 |
10 | Replace the lumbar switch. Refer to Lumbar Switch Replacement . Did you complete the replacement? | Go to Step 12 | -- |
11 | Replace the lumbar vertical motor. Refer to Front Seat Lumbar Support 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 2 |
Lumbar Support Does Not Move Up or Down with A45
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Lumbar Support Schematics Connector End View Reference: Power Seat Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Power Seats Systems? | Go to Step 2 | |
2 | Verify that the Lumbar Support Does Not Move Up or Down complaint is present. Does the lumbar support system operate as described in the system description and operation? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the Seat Lumbar Up parameter change state? | Go to Step 4 | Go to Step 6 |
4 |
Does the Seat Lumbar Down parameter change state? | Go to Step 5 | Go to Step 7 |
5 |
Does the test lamp illuminate in both directions? | Go to Step 14 | Go to Step 8 |
6 |
Does the Seat Lumbar Up parameter change state? | Go to Step 13 | Go to Step 10 |
7 |
Does the Seat Lumbar Down parameter change state? | Go to Step 13 | Go to Step 11 |
8 | Test the lumbar motor up control circuit between the memory seat module and the lumbar vertical motor for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 18 | Go to Step 9 |
9 | Test the lumbar motor down control circuit between the memory seat module and the lumbar vertical motor for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 18 | Go to Step 12 |
10 | Test the lumbar up switch signal circuit between the lumbar switch and the memory seat module for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 18 | Go to Step 12 |
11 | Test the lumbar down switch signal circuit between the lumbar switch and the memory seat module for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 18 | Go to Step 12 |
12 | Inspect for poor connections at the harness connector of the memory seat module. 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 18 | Go to Step 15 |
13 | Inspect for poor connections at the harness connector of the lumbar 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 18 | Go to Step 16 |
14 | Inspect for poor connections at the harness connector of the lumbar vertical motor. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 18 | Go to Step 17 |
15 | Replace the memory seat module. Refer to Memory Seat Control Module Replacement . Did you complete the replacement? | Go to Step 18 | -- |
16 | Replace the lumbar switch. Refer to Lumbar Switch Replacement . Did you complete the replacement? | Go to Step 18 | -- |
17 | Replace the lumbar vertical motor. Refer to Front Seat Lumbar Support Replacement . Did you complete the replacement? | Go to Step 18 | -- |
18 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
