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 | ||||
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 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 voltage measure within the specified range? | 9-16 V | Go to Step 4 | Go to Step 22 |
4 | Measure the voltage from the battery positive voltage (B+) circuit of the adaptive lumbar module connector to a good ground. Does the voltage measure within the specified range? | 9-16 V | Go to Step 5 | Go to Step 23 |
5 | Measure the voltage from the battery positive voltage (B+) circuit of the adaptive lumbar module connector to the ground circuit of the adaptive lumbar module connector. Does the voltage measure within the specified range? | 9-16 V | Go to Step 6 | Go to Step 24 |
6 |
Does the voltage measure within the specified range? | 6-10 V | Go to Step 7 | Go to Step 17 |
7 |
Does the voltage from any of the switch signal circuits measure greater than the specified value? | 0 V | Go to Step 18 | Go to Step 8 |
8 | With the adaptive lumbar module connector connected, measure the voltage from the adaptive seat switch auto/on signal circuit of the module connector, while operating the lumbar AUTO/ON switch. Does the voltage measure within the specified range? | 6-10 V | Go to Step 9 | Go to Step 12 |
9 | With the adaptive lumbar module connector connected, measure the voltage from the adaptive seat switch off signal circuit of the module connector while operating the lumbar OFF switch. Does the voltage measure within the specified range? | 6-10 V | Go to Step 10 | Go to Step 13 |
10 | With the adaptive lumbar module connector connected, measure the voltage from the lumbar motor rearward signal circuit of the adaptive lumbar module connector while operating the lumbar switch in the REARWARD direction. Does the voltage measure within the specified range? | 6-10 V | Go to Step 11 | Go to Step 14 |
11 | With the adaptive lumbar module connector connected, measure the voltage from the lumbar motor forward signal circuit of the adaptive lumbar module connector while operating the lumbar switch in the FORWARD direction. Does the voltage measure within the specified range? | 6-10 V | Go to Step 19 | Go to Step 15 |
12 |
Does the voltage measure within the specified range? | 6-10 V | Go to Step 20 | Go to Step 16 |
13 |
Does the voltage measure within the specified range? | 6-10 V | Go to Step 20 | Go to Step 16 |
14 |
Does the voltage measure within the specified range? | 6-10 V | Go to Step 20 | Go to Step 16 |
15 |
Does the voltage measure within the specified range? | 6-10 V | Go to Step 20 | Go to Step 16 |
16 | Test the appropriate lumbar switch signal circuit between the adaptive lumbar module and the lumbar switch for a short to ground, 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 27 | Go to Step 19 |
17 | Test the battery positive voltage (B+) circuit of the lumbar switch for a short to ground, 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 27 | Go to Step 21 |
18 | Test the lumbar switch signal circuits between the adaptive lumbar module and the lumbar switch for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 27 | Go to Step 20 |
19 | Perform a mechanical inspection of the adaptive lumbar module assembly and bladders for air leaks and restricted air lines. Did you find and correct the condition? | -- | Go to Step 27 | Go to Step 21 |
20 | 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 27 | Go to Step 25 |
21 | 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 27 | Go to Step 26 |
22 | Repair the open or short to ground in the IGN 3 circuit of the adaptive lumbar module. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 27 | -- |
23 | Repair the open or short to ground in the battery positive voltage (B+) circuit of the adaptive lumbar module. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 27 | -- |
24 | 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 27 | -- |
25 | Replace the lumbar switch. Refer to Lumbar Switch Replacement . Did you complete the replacement? | -- | Go to Step 27 | -- |
26 | Replace the adaptive lumbar module. Refer to Front Seat Lumbar Support Replacement . Did you complete the replacement? | -- | Go to Step 27 | -- |
27 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
