Lumbar Support Inoperative w/o A45
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Lumbar Support Schematics Connector End View Reference: Power Seat Connector End Views | ||||
1 | Did you review the power seat operation and perform the necessary inspection? | -- | Go to Step 2 | Go to Symptoms - Seats |
2 | Verify that the Lumbar Support Inoperative 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 | Measure the voltage from the battery positive voltage circuit of the lumbar switch to a good ground. Does the voltage measure within the specified range? | 9-16 V | Go to Step 4 | Go to Step 6 |
4 | Measure the voltage from the battery positive voltage circuit of the lumbar switch to the ground circuit of the lumbar switch. Does the voltage measure within the specified range? | 9-16 V | Go to Step 5 | Go to Step 7 |
5 | 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 9 | Go to Step 8 |
6 | Repair the open in the battery positive voltage circuit of the lumbar switch. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 9 | -- |
7 | Repair the open in the ground circuit of the lumbar switch. Refer to Wiring Repairs in Wiring Systems. Is the circuit repair complete? | -- | Go to Step 9 | -- |
8 | Replace the lumbar switch. Refer to Power Seat Switch Replacement . Did you complete the replacement? | -- | Go to Step 9 | -- |
9 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
Lumbar Support Inoperative with A45
Step | Action | Value(s) | 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 Seat Systems? | -- | Go to Step 2 | |
2 | Verify that the Lumbar Support Inoperative 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 |
Did the lumbar parameter change state? | -- | Go to Step 7 | Go to Step 4 |
4 | Measure the voltage from the battery positive voltage circuit of the lumbar switch to a good ground. Does the voltage measure within the specified range? | 9-16 V | Go to Step 5 | Go to Step 8 |
5 |
Does the test lamp illuminate? | -- | Go to Step 7 | Go to Step 6 |
6 | 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 11 | Go to Step 9 |
7 | 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 11 | Go to Step 10 |
8 | Repair the open in the battery positive voltage circuit of the lumbar switch. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 11 | -- |
9 | Replace the lumbar switch. Refer to Power Seat Switch Replacement . Did you complete the replacement? | -- | Go to Step 11 | -- |
10 | Replace the memory seat module. Refer to Memory Seat Control Module Replacement . Did you complete the replacement? | -- | Go to Step 11 | -- |
11 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
Lumbar Support Inoperative with AC9
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Lumbar Support Schematics Connector End View Reference: Power Seat Connector End Views | ||||
1 | Did you review the power seat operation and perform the necessary inspection? | -- | Go to Step 2 | Go to Symptoms - Seats |
2 | Verify that the Adaptive Lumbar Support Inoperative complaint is present. Does the adaptive 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 18 |
4 | Connect a test lamp between the ignition 3 voltage circuit of the adaptive lumbar module and a good ground. Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 17 |
5 | Connect a test lamp between the ignition 3 voltage circuit of the adaptive lumbar module and the ground circuit of the module. Does the test lamp illuminate? | -- | Go to Step 6 | Go to Step 19 |
6 | Connect a test lamp from battery positive voltage to each lumbar switch signal circuits of the adaptive lumbar module. Does the test lamp illuminate on any of the circuits? | -- | Go to Step 11 | Go to Step 7 |
7 |
Does the test lamp illuminate? | -- | Go to Step 8 | Go to Step 12 |
8 |
Does the test lamp illuminate? | -- | Go to Step 9 | Go to Step 13 |
9 |
Does the test lamp illuminate? | -- | Go to Step 10 | Go to Step 13 |
10 |
Does the test lamp illuminate? | -- | Go to Step 14 | Go to Step 13 |
11 | Test the suspect lumbar switch signal circuit between the adaptive lumbar module and the lumbar switch for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 22 | Go to Step 15 |
12 | Test the ground circuit of the lumbar switch 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 22 | Go to Step 13 |
13 | Test the suspect lumbar switch signal circuit between the adaptive lumbar module and the lumbar switch 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 22 | Go to Step 15 |
14 | Perform a mechanical inspection of the adaptive lumbar module and bladders for air leaks, pinched air lines, and a blocked exhaust port. Did you find and correct the condition? | -- | Go to Step 22 | Go to Step 16 |
15 | 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 22 | Go to Step 20 |
16 | Inspect for poor connections at the harness connector of the adaptive lumbar module. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 22 | Go to Step 21 |
17 | Repair the open or short to ground in the IGN 3 voltage circuit of the adaptive lumbar module. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 22 | -- |
18 | Repair the open or short to ground in the battery positive voltage circuit of the adaptive lumbar module. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 22 | -- |
19 | Repair the open in the ground circuit of the adaptive lumbar module. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 22 | -- |
20 | Replace the lumbar switch. Refer to Front Seat Lumbar Control Switch Replacement . Did you complete the replacement? | -- | Go to Step 22 | -- |
21 | Replace the adaptive lumbar module. Refer to Front Seat Lumbar Support Replacement . Did you complete the replacement? | -- | Go to Step 22 | -- |
22 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
