Lumbar Support Does Not Move In or Out w/o Memory-A45
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Driver Seat Schematics , Passenger Seat Schematics , or Rear Seat 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 In or Out 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 rearward 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 forward 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 adjuster 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 horizontal 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 adjuster switch. Refer to Power Seat Switch Replacement . Did you complete the replacement? | Go to Step 12 | -- |
11 | Replace the lumbar horizontal 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 In or Out with Memory-A45
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Driver Seat Schematics Connector End View Reference: Power Seat Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 | Verify that the Lumbar Support Does Not Move In or Out 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 Forward parameter change state? | Go to Step 4 | Go to Step 6 |
4 |
Does the Seat Lumbar Rearward parameter change state? | Go to Step 5 | Go to Step 7 |
5 |
Did the test lamp illuminate in both directions? | Go to Step 14 | Go to Step 8 |
6 |
Does the Seat Lumbar Forward parameter change state? | Go to Step 13 | Go to Step 10 |
7 |
Does the Seat Lumbar Rearward parameter change state? | Go to Step 13 | Go to Step 11 |
8 | Test the lumbar motor forward control circuit between the MSM and the lumbar horizontal 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 rearward control circuit between the MSM and the lumbar horizontal 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 forward switch signal circuit between the lumbar switch and the MSM 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 rearward switch signal circuit between the lumbar switch and the MSM 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 MSM. 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 horizontal 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 18 | Go to Step 17 |
15 | Replace the MSM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 18 | -- |
16 | Replace the seat lumbar switch. Refer to Front Seat Lumbar Control Switch Replacement or Rear Seat Lumbar Control Switch Replacement . Did you complete the replacement? | Go to Step 18 | -- |
17 | Replace the seat lumbar horizontal motor. Refer to Front Seat Lumbar Support Replacement or Rear 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 |
