Lexus NX: Front Power Seat does not Operate with Front Power Seat Switch
DESCRIPTION
Signals are input into the front power seat switch LH. The built-in ECU manages the signals received from the power seat switch, and operates each motor. If the front power seat switch LH receives more than 2 motor operation signals, the motor is stopped. Manual operation is restarted after the front power seat switch LH receives 1 signal only.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
| 1. | CHECK FRONT POWER SEAT OPERATION |
(a) Check that each function of the power seat operates normally by using the front power seat switch LH.
Click here .gif)
| Result | Proceed to |
|---|---|
| All power seat functions do not operate | A |
| One or more power seat functions do not operate | B |
| B | .gif) | GO TO OTHER DIAGNOSIS PROCEDURE (One or more Power Seat Motors do not Operate) |
|
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| 2. | CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH - BATTERY AND BODY GROUND) |
| (a) Disconnect the g11 and g12 front power seat switch LH connectors. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| g11-2 (GND) - Body ground | Always | Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Switch Condition | Specified Condition |
|---|---|---|
| g11-7 (+B) - Body ground | Power switch off | 11 to 14 V |
| g12-3 (IG) - Body ground | Power switch on (IG) | 11 to 14 V |
| Power switch off | Below 1 V | |
| g12-12 (SYSB) - Body ground | Power switch off | 11 to 14 V |
| OK | | REPLACE FRONT POWER SEAT SWITCH LH |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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SEE MORE:
Removal
REMOVAL CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE 1. REMOVE REAR WIPER ARM HEAD CAP Click here 2. REMOVE REAR WIPER ARM AND BLADE ASSEMBLY Click here 3. REMOVE REAR WIPER MOTOR GROMMET Click here
Repair
REPAIR CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
If the installation area of the headlight assembly is damaged, use the supply retainer for low-cost repair.
Make sure that the headlight assembly is not damage
