Lumbar Support Inoperative (Driver's Seat)
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 Step 2
| Go to Power Seat System Diagnostic System
Check
|
2
|
- Disconnect the LH seat adjuster switch connector.
- Connect a DMM between the seat adjuster switch connector terminal
20 and ground.
- Measure the available voltage at terminal 20.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 4
|
Go to Step 3
|
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 Seat System Diagnostic System Check
| --
|
4
|
- Disconnect the LH seat upper motor connector C1.
- Connect a DMM between the LH seat upper motor connector C1 terminal
A and ground.
- Measure the available voltage at terminal A.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 6
|
Go to Step 5
|
5
| Locate and repair an open or a high resistance in CKT 1140 between the
instrument panel electrical center and the LH seat upper motor connector C1.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
6
|
- Disconnect the LH seat upper motor connector C2.
- Use a DMM to measure CKT 150 for continuity between the LH seat
upper motor connector C2 terminal D and ground.
Is CKT 150 continuous to ground?
| --
|
Go to Step
8
|
Go to Step 7
|
7
| Locate and repair an open or a high resistance in CKT 150 between the
LH seat upper motor connector C2 and G205.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
8
|
- Reconnect the LH seat adjuster switch connector.
- Connect a DMM between the LH seat upper motor connector C1 terminal
D and ground.
- Press the Lower Lumbar Inflate button on the LH seat adjuster
switch.
- Measure the available voltage at the LH seat upper motor connector
C1 terminal D.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 11
|
Go to Step
9
|
9
|
- Disconnect the LH seat adjuster switch connector.
- Use a DMM to measure CKT 789 for continuity between the LH seat
adjuster switch connector terminal 11 and the LH seat upper motor connector
C1 terminal D.
Is CKT 789 continuous between these two connectors?
| --
|
Go to Step 26
|
Go to Step
10
|
10
| Locate and repair an open or a high resistance in CKT 789.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
11
|
- Connect a DMM between the LH seat upper motor connector C2 terminal
A and ground.
- Press the Upper Lumbar Inflate button on the LH seat adjuster
switch.
- Measure the available voltage at the LH seat upper motor connector
C2 terminal A.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 14
|
Go to Step
12
|
12
|
- Disconnect the LH seat adjuster switch connector.
- Use a DMM to measure CKT 777 for continuity between the LH seat
adjuster switch connector terminal 16 and the LH seat upper motor connector
C2 terminal A.
Is CKT 777 continuous between these two connectors?
| --
|
Go to Step 26
|
Go to Step
13
|
13
| Locate and repair an open or a high resistance in CKT 777.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
14
|
- Connect a DMM between the LH seat upper motor connector C1 terminal
E and ground.
- Press the Side Bolster Inflate button on the LH seat adjuster
switch.
- Measure the available voltage at the LH seat upper motor connector
C1 terminal E.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 17
|
Go to Step
15
|
15
|
- Disconnect the LH seat adjuster switch connector.
- Use a DMM to measure CKT 765 for continuity between the LH seat
adjuster switch connector terminal 18 and the LH seat upper motor connector
C1 terminal E.
Is CKT 765 continuous between these two connectors?
| --
|
Go to Step 26
|
Go to Step
16
|
16
| Locate and repair an open or a high resistance in CKT 765.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
17
|
- Connect a DMM between the LH seat upper motor connector C2 terminal
B and ground.
- Press the Side Bolster Deflate button on the LH seat adjuster
switch.
- Measure the available voltage at the LH seat upper motor connector
C2 terminal B.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 20
|
Go to Step
18
|
18
|
- Disconnect the LH seat adjuster switch connector.
- Use a DMM to measure CKT 466 for continuity between the LH seat
adjuster switch connector terminal 9 and the LH seat upper motor connector
C2 terminal B.
Is CKT 466 continuous between these two connectors?
| --
|
Go to Step 26
|
Go to Step
19
|
19
| Locate and repair an open or a high resistance in CKT 466.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
20
|
- Connect a DMM between the LH seat upper motor connector C2 terminal
C and ground.
- Press the Upper Lumbar Deflate button on the LH seat adjuster
switch.
- Measure the available voltage at the LH seat upper motor connector
C2 terminal C.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 23
|
Go to Step
21
|
21
|
- Disconnect the LH seat adjuster switch connector.
- Use a DMM to measure CKT 764 for continuity between the LH seat
adjuster switch connector terminal 5 and the LH seat upper motor connector
C2 terminal C.
Is CKT 764 continuous between these two connectors?
| --
|
Go to Step 26
|
Go to Step
22
|
22
| Locate and repair an open or a high resistance in CKT 764.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
23
|
- Connect a DMM between the LH seat upper motor connector C1 terminal
B and ground.
- Press the Lower Lumbar Deflate button on the LH seat adjuster
switch.
- Measure the available voltage at the LH seat upper motor connector
C1 terminal B.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 27
|
Go to Step
24
|
24
|
- Disconnect the LH seat adjuster switch connector.
- Use a DMM to measure CKT 386 for continuity between the LH seat
adjuster switch connector terminal 22 and the LH seat upper motor connector
C1 terminal B.
Is CKT 386 continuous between these two connectors?
| --
|
Go to Step 26
|
Go to Step
25
|
25
| Locate and repair an open or a high resistance in CKT 386.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
26
| Replace the LH seat adjuster switch.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic 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?
| --
|
Go to Step 28
|
Go to Step 29
|
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 Seat System Diagnostic System Check
| --
|
29
| Replace the LH seat upper motor.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
Lumbar Support Inoperative (Passenger's Seat)
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 Step 2
| Go to Power Seat System Diagnostic System
Check
|
2
|
- Disconnect the RH seat adjuster switch connector.
- Connect a DMM between the seat adjuster switch connector terminal
20 and ground.
- Measure the available voltage at terminal 20.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 4
|
Go to Step 3
|
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 Seat System Diagnostic System Check
| --
|
4
|
- Disconnect the RH seat upper motor connector C1.
- Connect a DMM between the RH seat upper motor connector C1 terminal
A and ground.
- Measure the available voltage at terminal A.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 6
|
Go to Step 5
|
5
| Locate and repair an open or a high resistance in CKT 1140 between the
instrument panel electrical center and the RH seat upper motor connector C1.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
6
|
- Disconnect the RH seat upper motor connector C2.
- Use a DMM to measure CKT 150 for continuity between the RH seat
upper motor connector C2 terminal D and ground.
Is CKT 150 continuous to ground?
| --
|
Go to Step
8
|
Go to Step 7
|
7
| Locate and repair an open or a high resistance in CKT 150 between the
RH seat upper motor connector C2 and G302.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
8
|
- Reconnect the RH seat adjuster switch connector.
- Connect a DMM between the RH seat upper motor connector C1 terminal
D and ground.
- Press the Lower Lumbar Inflate button on the RH seat adjuster
switch.
- Measure the available voltage at the RH seat upper motor connector
C1 terminal D.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 11
|
Go to Step
9
|
9
|
- Disconnect the RH seat adjuster switch connector.
- Use a DMM to measure CKT 789 for continuity between the RH seat
adjuster switch connector terminal 16 and the RH seat upper motor connector
C1 terminal D.
Is CKT 789 continuous between these two connectors?
| --
|
Go to Step 26
|
Go to Step
10
|
10
| Locate and repair an open or a high resistance in CKT 789.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
11
|
- Connect a DMM between the RH seat upper motor connector C2 terminal
A and ground.
- Press the Upper Lumbar Inflate button on the RH seat adjuster
switch.
- Measure the available voltage at the RH seat upper motor connector
C2 terminal A.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 14
|
Go to Step
12
|
12
|
- Disconnect the RH seat adjuster switch connector.
- Use a DMM to measure CKT 1261 for continuity between the RH seat
adjuster switch connector terminal 11 and the RH seat upper motor connector
C2 terminal A.
Is CKT 1261 continuous between these two connectors?
| --
|
Go to Step 26
|
Go to Step 13
|
13
| Locate and repair an open or a high resistance in CKT 1261.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
14
|
- Connect a DMM between the RH seat upper motor connector C1 terminal
E and ground.
- Press the Side Bolster Inflate button on the RH seat adjuster
switch.
- Measure the available voltage at the RH seat upper motor connector
C1 terminal E.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 17
|
Go to Step
15
|
15
|
- Disconnect the RH seat adjuster switch connector.
- Use a DMM to measure CKT 1265 for continuity between the RH seat
adjuster switch connector terminal 9 and the RH seat upper motor connector
C1 terminal E.
Is CKT 1265 continuous between these two connectors?
| --
|
Go to Step 26
|
Go to Step 16
|
16
| Locate and repair an open or a high resistance in CKT 1265.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
17
|
- Connect a DMM between the RH seat upper motor connector C2 terminal
B and ground.
- Press the Side Bolster Deflate button on the RH seat adjuster
switch.
- Measure the available voltage at the RH seat upper motor connector
C2 terminal B.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 20
|
Go to Step
18
|
18
|
- Disconnect the RH seat adjuster switch connector.
- Use a DMM to measure CKT 758 for continuity between the RH seat
adjuster switch connector terminal 18 and the RH seat upper motor connector
C2 terminal B.
Is CKT 758 continuous between these two connectors?
| --
|
Go to Step 26
|
Go to Step
19
|
19
| Locate and repair an open or a high resistance in CKT 758.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
20
|
- Connect a DMM between the RH seat upper motor connector C2 terminal
C and ground.
- Press the Upper Lumbar Deflate button on the RH seat adjuster
switch.
- Measure the available voltage at the RH seat upper motor connector
C2 terminal C.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 23
|
Go to Step
21
|
21
|
- Disconnect the RH seat adjuster switch connector.
- Use a DMM to measure CKT 1805 for continuity between the RH seat
adjuster switch connector terminal 22 and the RH seat upper motor connector
C2 terminal C.
Is CKT 1805 continuous between these two connectors?
| --
|
Go to Step 26
|
Go to Step 22
|
22
| Locate and repair an open or a high resistance in CKT 1805.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
23
|
- Connect a DMM between the RH seat upper motor connector C1 terminal
B and ground.
- Press the Lower Lumbar Deflate button on the RH seat adjuster
switch.
- Measure the available voltage at the RH seat upper motor connector
C1 terminal B.
Is the voltage within the specified range?
| 10.0-14.0V
|
Go to Step 27
|
Go to Step
24
|
24
|
- Disconnect the RH seat adjuster switch connector.
- Use a DMM to measure CKT 757 for continuity between the RH seat
adjuster switch connector terminal 5 and the RH seat upper motor connector
C1 terminal B.
Is CKT 757 continuous between these two connectors?
| --
|
Go to Step 26
|
Go to Step
25
|
25
| Locate and repair an open or a high resistance in CKT 757.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
26
| Replace the RH seat adjuster switch.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic 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?
| --
|
Go to Step 28
|
Go to Step 29
|
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 Seat System Diagnostic System Check
| --
|
29
| Replace the RH seat upper motor.
Is the repair complete?
| --
| Go to Power Seat System Diagnostic System Check
| --
|
