Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Driver Seat Schematics , Passenger Seat Schematics Connector End View Reference: Power Seat Connector End Views | |||
1 | Did you review the Lumbar System Description and Operation and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - Seats |
2 | Verify the condition is present. 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 when the switch is operated in both directions? | Go to Step 6 | Go to Step 4 |
4 | Test the motor control circuits for an open or short to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 5 |
5 | Inspect for poor connections at the lumbar switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 7 |
6 | Inspect for poor connections at the inoperative lumbar or torso motor. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 8 |
7 | Replace the lumbar switch. Refer to Lumbar Switch Replacement . | Go to Step 9 | -- |
8 | Replace the lumbar support/torso bolster motor assembly. Refer to Front Seat Lumbar Support Replacement . Is the repair complete? | Go to Step 9 | -- |
9 | Operate the system to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
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 the condition is present. Does the system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Do any of the Lumbar or Torso Switch parameters display Active? | Go to Step 4 | Go to Step 5 |
4 | Disconnect the lumbar adjuster switch connector. Do all of the Lumbar or Torso Switch parameters display Inactive? | Go to Step 18 | Go to Step 13 |
5 |
Does the scan tool display the lumbar forward switch as active? | Go to Step 6 | Go to Step 9 |
6 |
Does the scan tool display the lumbar rearward switch as active? | Go to Step 7 | Go to Step 10 |
7 |
Does the scan tool display the torso inward switch as active? | Go to Step 8 | Go to Step 11 |
8 |
Does the scan tool display the torso outward switch as active? | Go to Step 19 | Go to Step 12 |
9 |
Does the scan tool display the lumbar forward switch as Active? | Go to Step 18 | Go to Step 14 |
10 |
Does the scan tool display the lumbar rearward switch as Active? | Go to Step 18 | Go to Step 15 |
11 |
Does the scan tool display the torso inward switch as Active? | Go to Step 18 | Go to Step 16 |
12 |
Does the scan tool display the torso outward switch as Active? | Go to Step 18 | Go to Step 17 |
13 | Test the active lumbar or torso switch signal circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 19 |
14 | Test the lumbar forward switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 19 |
15 | Test the lumbar rearward switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 19 |
16 | Test the torso inward switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 19 |
17 | Test the torso outward switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 19 |
18 | Inspect for poor connections at the harness connector of the lumbar switch assembly. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 20 |
19 | Inspect for poor connections at the harness connector of the DSM . Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 21 |
20 | Replace the lumbar switch assembly. Refer to Lumbar Switch Replacement . Did you complete the replacement? | Go to Step 22 | -- |
21 | Replace the DSM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 22 | -- |
22 | Operate the system to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |