Lumbar Massage 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 lumbar operation and perform the necessary inspection? | -- | Go to Step 2 | Go to Symptoms - Seats |
2 | Verify that the Lumbar Massage Inoperative complaint is present. Does the lumbar massage 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? | 4.25-5.50 V | Go to Step 4 | Go to Step 6 |
4 |
Does the voltage measure within the specified range? | 4.25-5.50 V | Go to Step 5 | Go to Step 7 |
5 | Measure the resistance from the low reference circuit of the lumbar vertical position sensor connector to a good ground. Does the resistance measure less than the specified value? | 5 ohms | Go to Step 9 | Go to Step 8 |
6 | Test the 5 volt reference circuit of the lumbar vertical position sensor for a short to battery voltage or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 10 |
7 | Test the signal circuit of the lumbar vertical position sensor for a short to battery voltage or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 10 |
8 | Test the low reference circuit of the lumbar vertical position sensor for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 10 |
9 | Inspect for poor connections at the harness connector of the lumbar vertical motor/position sensor assembly. 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 13 | Go to Step 11 |
10 | Inspect for poor connections at the harness connector of the massage 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 13 | Go to Step 12 |
11 | Replace the lumbar vertical motor/position sensor assembly. Refer to Front Seat Lumbar Support Replacement . Did you complete the replacement. | -- | Go to Step 13 | -- |
12 | Replace the massage module. Refer to Massaging Lumbar Control Module Replacement . Did you complete the replacement. | -- | Go to Step 13 | -- |
13 | Operate the system in order to verify the repair? Did you correct the condition? | -- | System OK | Go to Step 2 |
Lumbar Massage Inoperative 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 Seat Systems? | Go to Step 2 | |
2 | Verify that the Lumbar Massage Inoperative complaint is present. Does the lumbar massage 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 | Inspect for poor connections at the harness connector of the massage 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 5 | Go to Step 4 |
4 | Replace the massage module. Refer to Massaging Lumbar Control Module Replacement . Did you complete the replacement. | Go to Step 5 | -- |
5 | Operate the system in order to verify the repair? Did you correct the condition? | System OK | Go to Step 2 |
