Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Toyota >> 2003 >> Avalon XLS >> Repair and Diagnosis >> Body & Frame >> Seats >> Power Seat Control System (W/Driving Position Memory) - Diagnostics >> Circuit Inspection >> Motor Circuit >> Inspection Procedure

Inspection Procedure

  1. Check motor. 
    Fig 1: Checking Slide Motor
    G02832121Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    PREPARATION: Slide Motor

    1. Remove seat.
    2. Disconnect each motor connector.

    CHECK: 

    Check seat movement when battery positive voltage is applied to each motor.

    Slide Motor

    CHECK: 

    Connect battery (+) to terminal 2 and battery (-) to terminal 1 of the slide motor connector.

    OK: The seat moves forward. 

    CHECK: 

    Connect battery (-) to terminal 2 and battery (+) to terminal 1 of the slide motor connector.

    OK: The seat moves backward. 

    Front Vertical Motor

    Fig 2: Checking Front Vertical Motor
    G02832122Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    CHECK: 

    Connect battery (+) to terminal 2 and battery (-) to terminal 1 of the front vertical motor connector.

    OK: The front of the seat cushion rises. 

    CHECK: 

    Connect battery (-) to terminal 2 and battery (+) to terminal 1 of the front vertical motor connector.

    OK: The front of the seat cushion lowers. 

    Rear Vertical Motor

    CHECK: 

    Connect battery (+) to terminal 2 and battery (-) to terminal 1 of the rear vertical motor connector.

    OK: The front of the seat cushion rises. 

    CHECK: 

    Connect battery (-) to terminal 2 and battery (+) to terminal 1 of the rear vertical motor connector.

    OK: The front of the seat cushion lowers. 

    Reclining Motor

    CHECK: 

    Connect battery (+) to terminal 2 and battery (-) to terminal 1 of the reclining motor connector.

    OK: 

    The seat back returns to up right.

    CHECK: 

    Connect battery (-) to terminal 2 and battery (+) to terminal 1 of the reclining motor connector.

    OK: The seat back is reclining. 

    NG: Replace motor. 

    OK: Go to next step. 

  2. Check harness and connector between Seat Position Control ECU and motor (See  CUSTOMER PROBLEM ANALYSIS CHECK  ). 

    NG: Repair or replace harness or connector. 

    OK: Proceed to next circuit inspection shown on problem symptom table (See  PROBLEM SYMPTOMS TABLE  ).