FRONT POWER SEAT CONTROL SYSTEM (w/ Seat Position Memory System) > Front Power Seat does not Operate with Front Power Seat Switch

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DESCRIPTION

Signals of the front power seat switch are monitored by the position control ECU & switch assembly. The position control ECU & switch assembly then activates the driver and passenger side motors.

WIRING DIAGRAM


B107926E02


B107927E04


INSPECTION PROCEDURE

1.INSPECT FUSE (FR P/SEAT LH, FR P/SEAT RH, D/C CUT, MPX-B)

  1. Remove the FR P/SEAT LH fuse from the cowl side junction block LH.

  1. Remove the FR P/SEAT RH fuse from the cowl side junction block LH.

  1. Remove the D/C CUT and MPX-B fuses from the engine room No. 1 relay block.

  1. Measure the resistance of the fuses.

    Standard resistance:
    Below 1 Ω



NG
REPLACE FUSE
OK


2.CHECK WIRE HARNESS (POSITION CONTROL ECU & SWITCH ASSEMBLY - BODY GROUND)
B107933E02

  1. Disconnect the c6, c7, d7 and d8 switch connectors.

  1. Measure the voltage and resistance of the wire harness side connectors.

    Standard voltage:
    LH seat:
    Tester Connection
    		Condition
    		Specified Condition
    d8-5 (+B) - Body ground
    		Always
    		10 to 14 V
    d7-8 (SYSB) - Body ground
    		Always
    		10 to 14 V
    RH seat:
    Tester Connection
    		Condition
    		Specified Condition
    c6-5 (+B) - Body ground
    		Always
    		10 to 14 V
    c7-8 (SYSB) - Body ground
    		Always
    		10 to 14 V


    Standard resistance:
    LH seat:
    Tester Connection
    		Condition
    		Specified Condition
    d8-1 (GND) - Body ground
    		Always
    		Below 1 Ω
    RH seat:
    Tester Connection
    		Condition
    		Specified Condition
    c6-1 (GND) - Body ground
    		Always
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE POSITION CONTROL ECU & SWITCH ASSEMBLY