Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: This table diagnoses inoperative lumbar support, does not move down (AM3), in the right seat. | ||||
1 | Did you perform the entire Lumbar Support: Memory System Check? | -- | Go to Step 2 | |
2 |
Is the resistance less than the specified value? | 5 ohms | Go to Step 3 | Go to Step 5 |
3 | Test CKT 757 (YEL) for an open. Refer to Testing for Continuity in Wiring Systems. Is the wiring OK? | -- | Go to Step 6 | Go to Step 4 |
4 | Repair the open in CKT 757 (YEL). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
5 | Replace the RH lumbar switch. Refer to Lumbar/Heated Seat Switch Replacement - Power . Is the lumbar switch replacement complete? | -- | Go to Step 19 | -- |
6 |
Does the motor run? | -- | Go to Step 7 | Go to Step 9 |
7 | Test for an open or short to ground in CKT 793 (PNK) or (TAN/WHT) between the RH lumbar massage module and the RH lumbar vertical motor. Refer to Testing for Continuity or Testing for Short to Ground in Wiring Systems. Is the wiring OK? | -- | Go to Step 8 | Go to Step 14 |
8 | Test for an open or short to ground in CKT 792 (ORN) or (PPL/WHT) between the RH lumbar massage module and the RH lumbar vertical 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 15 |
9 | Replace the RH lumbar vertical motor. Is the lumbar vertical motor replacement complete? | -- | Go to Step 19 | -- |
10 | Test for proper terminal contact at the RH lumbar massage module connector. Refer to Intermittents and Poor Connections Diagnosis in Wiring Systems. Is terminal contact OK? | -- | Go to Step 11 | Go to Step 16 |
11 | Test for an open in CKT 742 (RED) between the RH lumbar massage module connector cavity A and splice S356. Refer to Testing for Continuity in Wiring Systems. Is the wiring OK? | -- | Go to Step 12 | Go to Step 17 |
12 | Test for an open in CKT 850 (BLK) between the RH lumbar massage module connector cavity J and splice S357. Refer to Testing for Continuity in Wiring Systems. Is the wiring OK? | -- | Go to Step 13 | Go to Step 18 |
13 | Replace the RH lumbar massage module. Is the lumbar massage module replacement complete? | -- | Go to Step 19 | -- |
14 | Repair the open or short to ground in CKT 793 (PNK) or (TAN/WHT). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
15 | Repair the open or short to ground in CKT 792 (ORN) or (PPL/WHT). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
16 | Repair the appropriate terminals. Refer to Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
17 | Repair the open in CKT 742 (RED). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
18 | Repair the open in CKT 850 (BLK). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
19 | Perform the Lumbar Support System Check . Is the system check complete? | -- | System OK | -- |
