Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: This table diagnoses the lumbar support, in out inoperative (option AL2) in the left seat. | ||||
1 | Did you perform the Lumbar Support System Check? | -- | Go to Step 2 | |
2 | Use a test lamp in order to backprobe the LH lumbar horizontal relay connector from cavity C (RED) to ground. Does the test lamp light? | -- | Go to Step 3 | Go to Step 11 |
3 | Use a test lamp in order to backprobe the LH lumbar horizontal relay connector from cavity C (RED) to cavity D (BLK). Does the test lamp light? | -- | Go to Step 4 | Go to Step 12 |
4 |
Does the test lamp light? | -- | Go to Step 5 | Go to Step 13 |
5 |
Does the test lamp light? | -- | Go to Step 6 | Go to Step 14 |
6 |
Does the test lamp light? | -- | Go to Step 7 | Go to Step 16 |
7 |
Does the test lamp light? | -- | Go to Step 8 | Go to Step 16 |
8 | Test for an open or short to ground in CKT 610 (PNK or PNK/BLK) between the LH lumbar horizontal relay and the LH lumbar horizontal motor. Refer to Testing for Continuity or Testing for Short to Ground in Wiring Systems. Is the wiring OK? | -- | Go to Step 9 | Go to Step 17 |
9 | Test for an open or short to ground in CKT 611 (DK BLU or DK BLU/WHT) between the LH lumbar horizontal relay and the LH lumbar horizontal motor. Refer to Testing for Continuity or Testing for Short to Ground in Wiring Systems. Is the wiring OK? | -- | Go to Step 10 | Go to Step 17 |
10 | Replace the LH lumbar horizontal motor. Refer to Front Seat Lumbar Support Replacement . Is the lumbar horizontal motor replacement complete? | -- | -- | |
11 | Repair the open in CKT 742 (RED) between splice S352 and the LH lumbar horizontal relay. Refer to Wiring Repairs in Wiring Systems. Is the circuit repair complete? | -- | -- | |
12 | Repair the open in CKT 850 (BLK) between splice S351 the LH lumbar horizontal relay. Refer to Wiring Repairs in Wiring Systems. Is the circuit repair complete? | -- | -- | |
13 | Test for an open or short to ground in CKT 466 (GRY) between the LH lumbar switch and the LH lumbar horizontal relay. Refer to Testing for Continuity or Testing for Short to Ground in Wiring Systems. Is the wiring OK? | -- | Go to Step 15 | Go to Step 17 |
14 | Test for an open or short to ground in CKT 385 (PPL) between the LH lumbar switch and the LH lumbar horizontal relay. Refer to Testing for Continuity or Testing for Short to Ground in Wiring Systems. Is the wiring OK? | -- | Go to Step 15 | Go to Step 17 |
15 | Replace the LH lumbar switch. Refer to Lumbar/Heated Seat Switch Replacement - Power . Is the lumbar switch replacement complete? | -- | -- | |
16 | Replace the LH lumbar horizontal relay. Is the lumbar horizontal relay replacement complete? | -- | -- | |
17 | Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
