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Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. FUNCTION CHECK 

    Check that each function of the door mirror operates normally.

    1. NG: GO TO (See  PROBLEM SYMPTOMS TABLE  ) 
    2. OK: Go to next step. 
  2. CHECK MEMORY OF OUTER REAR VIEW MIRROR 
    1. Check that the memory function of the outer rear view mirror operates normally.
    1. NG: FLOW CHART 4 (See  EITHER OF DRIVER OR PASSENGER POWER MIRROR CANNOT BE ADJUSTED MANUALLY (FLOW CHART 4)   ) 
    2. OK: Go to next step. 
  3. FUNCTION CHECK 
    1. Check that the driver's side seat memory function operates normally.
    1. NG: GO TO FRONT POWER SEAT CONTROL SYSTEM (See  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
    2. OK: Go to next step. 
  4. READ VALUE OF LEXUS HAND-HELD TESTER 
    1. Using the hand-held tester, check the rear outer view mirror operation by the data monitor.

      Driver and Passenger door ECU 

      Standard: 

      Fig 1: Driver and Passenger Door ECU Specified Condition Table - Rear Outer View Mirror
      G01449944Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: Go to step   6 
    2. NG: Go to next step. 
  5. CHECK OUTER REAR VIEW MIRROR 
    1. Check the continuity between each terminal of the outer rear view mirror.
      Fig 2: Specified Condition Table - Continuity Between Each Terminal Of The Outer Rear View Mirror
      G01449945Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Standard: 

    Fig 3: Identifying Outer Rear View Mirror Connector Terminals
    G01449946Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    • In case of the driver's side wire harness, proceed to OK-A.
    • In case of the passenger's side wire harness, proceed to OK-B.
    • If the driver's side outer rear view mirror malfunctions, proceed to NG-A.
    • If the passenger's side outer rear view mirror malfunctions, proceed to NG-B.
    1. OK-A: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT LH (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
    2. OK-B: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT RH (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
    3. NG-A: REPLACE OUTER REAR VIEW MIRROR ASSY LH 
    4. NG-B: REPLACE OUTER REAR VIEW MIRROR ASSY RH 
  6. READ VALUE OF LEXUS HAND-HELD TESTER 
    1. Using the hand-held tester, check the memorized driver and passenger door mirror positions by the data monitor.

      Standard: 

      Driver and Passenger seat ECU 

      Fig 4: Driver and Passenger Seat ECU Table - Memorized Driver And Passenger Door Mirror Positions
      G01449947Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using the hand-held tester, check the park/neutral position switch and vehicle speed sensor condition by the data monitor.

    Standard: 

    ECM

    Fig 5: ECM Specified Condition Table - Park/Neutral Position Switch And Vehicle Speed Sensor
    G01449948Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    • If the door mirror does not face the memorized direction in spite of the fact that the specified conditions are fulfilled, proceed to A.
    • If an item of PNP SW, N SW or VEHICLE SPD is not standard, proceed to B.
    1. REPLACE POSITION CONTROL ECU ASSY 
    2. B: GO TO COMBINATION METER SYSTEM (See  HOW TO PROCEED WITH TROUBLESHOOTING  )