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

for Preparation Click here


DESCRIPTION

When a signal is input into the position control ECU and switch assembly, the ECU manages the signals received from the power seat switch, and operates each motor. If the position control ECU and switch assembly receives more than 2 motor operation signals, the motor is stopped. Manual operation is restarted after the position control ECU and switch assembly receives 1 signal only.

WIRING DIAGRAM


B270911E02


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

1.CHECK FRONT POWER SEAT OPERATION

  1. Check that each function of the power seat operates normally by using the power seat switch (Click here).

    Result:
    Result
    		Proceed to
    All power seat functions do not operate
    		A
    One or more power seat functions do not operate
    		B



B
GO TO OTHER FLOW CHART (One or more Power Seat Motors do not Operate) (Click here)
A


2.CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - BATTERY)

  1. Disconnect the X4*1 or W3*2 position control ECU and switch assembly connectors.

    1. *1: for LHD
    2. *2: for RHD

  1. Measure the voltage according to the value(s) in the table below.

    Standard Voltage:
    for LHD 
    Tester Connection
    		Condition
    		Specified Condition
    X4-7 (+B) - Body ground
    		Power switch off
    		11 to 14 V
    for RHD 
    Tester Connection
    		Condition
    		Specified Condition
    W3-7 (+B) - Body ground
    		Power switch off
    		11 to 14 V



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - BODY GROUND)

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    for LHD 
    Tester Connection
    		Condition
    		Specified Condition
    X4-2 (GND) - Body ground
    		Always
    		Below 1 Ω
    for RHD 
    Tester Connection
    		Condition
    		Specified Condition
    W3-2 (GND) - Body ground
    		Always
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY (Click here)