FixVault
Home › Lexus › 2005 › LX 470 › Repair and Diagnosis › Body & Frame › Seats › Power Seat Control System - Diagnostics › Circuit Inspection › Motor Circuit › Inspection Procedure

Inspection Procedure

  1. Check motor. 

    PREPARATION: 

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

    CHECK: 

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

    CHECK: 

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

    OK: 

    1. The seat moves forward. 

    CHECK: 

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

    OK: 

    The seat moves backward. 

    Fig 1: Checking Seat Movement
    G02987534Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Front Vertical Motor 

    CHECK: 

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

    OK: 

    1. The front of the seat cushion rises. 

    CHECK: 

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

    OK: 

    1. The front of the seat cushion lowers. 

    Lifter Motor 

    CHECK: 

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

    OK: 

    1. The front of the seat cushion rises. 

    CHECK: 

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

    OK: 

    1. The front of the seat cushion lowers. 

    Reclining Motor 

    CHECK: 

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

    OK: 

    1. The seat back returns to up right. 

    CHECK: 

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

    OK: 

    1. The seat back is reclining. 
    Fig 2: Checking Seat Operation
    G02987535Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: Replace motor. 
    2. OK: Go to Next Step. 
  2. Check harness and connector between Power Seat ECU and motor (See  PROCEDURE  ). 
    1. NG: Repair or replace harness or connector. 
    2. OK: Proceed to next circuit inspection shown on problem symptom table (See  PROBLEM SYMPTOMS TABLE   ). 
About FixVault