Lumbar Support Inoperative Driver
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: Driver's side lumbar support is inoperative. Passenger's side lumbar support operates normally. | ||||
1 | Were you sent here from the Power Seat System Diagnostic System Check? | -- | Go to Power Seats System Check | |
2 |
Does the test light illuminate? | -- | ||
3 | Locate and repair an open or a high resistance in CKT 1740 between the instrument panel electrical center and the LH seat adjuster switch connector. Is the repair complete? | -- | Go to Power Seats System Check | -- |
4 |
Does the test light illuminate? | -- | ||
5 | Locate and repair an open or a high resistance in CKT 1140 between the instrument panel electrical center and the LH seat lumbar pump connector C2. Is the repair complete? | -- | Go to Power Seats System Check | -- |
6 |
Is CKT 150 continuous to ground? | -- | ||
7 | Locate and repair an open or a high resistance in CKT 150 between the LH seat lumbar pump connector C2 and G205. Is the repair complete? | -- | Go to Power Seats System Check | -- |
8 |
Does the test light illuminate? | -- | ||
9 |
Is CKT 789 continuous between these two connectors? | -- | ||
10 | Locate and repair an open or a high resistance in CKT 789. Is the repair complete? | -- | Go to Power Seats System Check | -- |
11 |
Does the test light illuminate? | -- | ||
12 |
Is CKT 777 continuous between these two connectors? | -- | ||
13 | Locate and repair an open or a high resistance in CKT 777. Is the repair complete? | -- | Go to Power Seats System Check | -- |
14 |
Does the test light illuminate? | -- | ||
15 |
Is CKT 765 continuous between these two connectors? | -- | ||
16 | Locate and repair an open or a high resistance in CKT 765. Is the repair complete? | -- | Go to Power Seats System Check | -- |
17 |
Does the test light illuminate? | -- | ||
18 |
Is CKT 466 continuous between these two connectors? | -- | ||
19 | Locate and repair an open or a high resistance in CKT 466. Is the repair complete? | -- | Go to Power Seats System Check | -- |
20 |
Does the test light illuminate? | -- | ||
21 |
Is CKT 764 continuous between these two connectors? | -- | ||
22 | Locate and repair an open or a high resistance in CKT 764. Is the repair complete? | -- | Go to Power Seats System Check | -- |
23 |
Does the test light illuminate? | -- | ||
24 |
Is CKT 386 continuous between these two connectors? | -- | ||
25 | Locate and repair an open or a high resistance in CKT 386. Is the repair complete? | -- | Go to Power Seats System Check | -- |
26 | Replace the LH seat adjuster switch. Refer to Power Seat Switch Replacement . Is the repair complete? | -- | Go to Power Seats System Check | -- |
27 | Visually inspect the lumbar air bladders, air lines and any other components that may affect lumbar operation for damage. Are all lumbar components in normal working condition? | -- | ||
28 | Repair or replace the lumbar air bladders, air lines or any other components that are affecting lumbar operation. Is the repair complete? | -- | Go to Power Seats System Check | -- |
29 | Replace the LH seat lumbar pump. Refer to Lumbar Pump Replacement . Is the repair complete? | -- | Go to Power Seats System Check | -- |
Lumbar Support Inoperative Passenger
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: Passenger's side lumbar support is inoperative. Driver's side lumbar support operates normally. | ||||
1 | Were you sent here from the Power Seat System Diagnostic System Check? | -- | Go to Power Seats System Check | |
2 |
Does the test light illuminate? | -- | ||
3 | Locate and repair an open or a high resistance in CKT 1140 between the instrument panel electrical center and the RH seat adjuster switch connector. Is the repair complete? | -- | Go to Power Seats System Check | -- |
4 |
Does the test light illuminate? | -- | ||
5 | Locate and repair an open or a high resistance in CKT 1140 between the instrument panel electrical center and the RH seat lumbar pump connector C1. Is the repair complete? | -- | Go to Power Seats System Check | -- |
6 |
Is CKT 150 continuous to ground? | -- | ||
7 | Locate and repair an open or a high resistance in CKT 150 between the RH seat lumbar pump connector C1 and G302. Is the repair complete? | -- | Go to Power Seats System Check | -- |
8 |
Does the test light illuminate? | -- | ||
9 |
Is CKT 1259 continuous between these two connectors? | -- | ||
10 | Locate and repair an open or a high resistance in CKT 1259. Is the repair complete? | -- | Go to Power Seats System Check | -- |
11 |
Does the test light illuminate? | -- | ||
12 |
Is CKT 1261 continuous between these two connectors? | -- | ||
13 | Locate and repair an open or a high resistance in CKT 1261. Is the repair complete? | -- | Go to Power Seats System Check | -- |
14 |
Does the test light illuminate? | -- | ||
15 |
Is CKT 1265 continuous between these two connectors? | -- | ||
16 | Locate and repair an open or a high resistance in CKT 1265. Is the repair complete? | -- | Go to Power Seats System Check | -- |
17 |
Does the test light illuminate? | -- | ||
18 |
Is CKT 758 continuous between these two connectors? | -- | ||
19 | Locate and repair an open or a high resistance in CKT 758. Is the repair complete? | -- | Go to Power Seats System Check | -- |
20 |
Does the test light illuminate? | -- | ||
21 |
Is CKT 1805 continuous between these two connectors? | -- | ||
22 | Locate and repair an open or a high resistance in CKT 1805. Is the repair complete? | -- | Go to Power Seats System Check | -- |
23 |
Does the test light illuminate? | -- | ||
24 |
Is CKT 757 continuous between these two connectors? | -- | ||
25 | Locate and repair an open or a high resistance in CKT 757. Is the repair complete? | -- | Go to Power Seats System Check | -- |
26 | Replace the RH seat adjuster switch. Refer to Power Seat Switch Replacement . Is the repair complete? | -- | Go to Power Seats System Check | -- |
27 | Visually inspect the lumbar air bladders, air lines and any other components that may affect lumbar operation for damage. Are all lumbar components in normal working condition? | -- | ||
28 | Repair or replace the lumbar air bladders, air lines or any other components that are affecting lumbar operation. Is the repair complete? | -- | Go to Power Seats System Check | -- |
29 | Replace the RH seat lumbar pump. Refer to Lumbar Pump Replacement . Is the repair complete? | -- | Go to Power Seats System Check | -- |
Lumbar Support Inoperative Both Seats
Step | Action | Value(s) | Yes | No | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DEFINITION: Both the Driver's and Passenger's side lumbar support are inoperative. Passenger's side seat position motors will also be inoperative but Driver's side seat position motors will operate normally. | ||||||||||||||||
1 | Were you sent here from the Power Seat System Diagnostic System Check? | -- | Go to Power Seats System Check | |||||||||||||
2 | Check the LUMBAR MiniFuse® #3. Is the fuse open? | -- | ||||||||||||||
3 | Using a DMM, check for voltage at terminal B of the LUMBAR MiniFuse® #3. Is the voltage within the specified range? | 10.0-14.0V | Go to Power Distribution | |||||||||||||
4 | Carefully inspect the connectors C2 and C3 at the instrument panel electrical center for looseness, corrosion, or damage. Are these connectors in good operating condition? | -- | ||||||||||||||
5 | Replace the instrument panel electrical center. Is the repair complete? | -- | Go to Power Seats System Check | -- | ||||||||||||
6 | Replace the LUMBAR MiniFuse® #3. Does the LUMBAR MiniFuse® #3 immediately open when installed? | -- | ||||||||||||||
7 | Repair the instrument panel electrical center connectors C2 and C3 as needed. Is the repair complete? | -- | Go to Power Seats System Check | -- | ||||||||||||
8 | Locate and repair a short to ground in CKT 1140. Is the repair complete? | -- | Go to Power Seats System Check | -- | ||||||||||||
9 |
When any of the Passenger's seat lumbar switch buttons are depressed, does the LUMBAR MiniFuse® #3 open? | -- | ||||||||||||||
10 | Locate and repair a short to ground in:
Is the repair complete? | -- | Go to Power Seats System Check | -- | ||||||||||||
11 |
When any of the Passenger's seat lumbar switch buttons are depressed, does the LUMBAR MiniFuse® #3 open? | -- | ||||||||||||||
12 | Visually inspect the RH seat lumbar pump, air lines and any other components that may affect lumbar operation for damage. If OK, replace the RH seat lumbar pump. Refer to Lumbar Pump Replacement . Is the repair complete? | -- | Go to Power Seats System Check | -- | ||||||||||||
13 | Visually inspect the LH seat lumbar pump, air lines and any other components that may affect lumbar operation for damage. If OK, replace the LH seat lumbar pump. Refer to Lumbar Pump Replacement . Is the repair complete? | -- | Go to Power Seats System Check | -- | ||||||||||||
