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Home >> Lexus >> 2007 >> RX 400h AWD >> Repair and Diagnosis >> Body & Frame >> Seats >> Seat >> Front Power Seat Control System >> Power Seat Motor Circuit >> Inspection Procedure

Inspection Procedure

  1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER 
    1. Connect the intelligent tester (with CAN VIM) to the DLC3.
    2. Turn the ignition switch on.
    3. Perform the ACTIVE TEST by following the directions on the tester screen.

      D_SEAT (Position control ECU and switch assembly) 

      TEST DETAILS

      Item Test Details Diagnostic Note
      RECLINING Test detail: reclining operation FRONT/REAR
      Vehicle condition: stopped
      -
      F VERTICAL Test detail: front vertical operation UP/DOWN
      Vehicle condition: stopped
      -
      LIFTER Test detail: lifter operation UP/DOWN
      Vehicle condition: stopped
      -
      SLIDE Test detail: sliding operation UP/DOWN
      Vehicle condition: stopped
      -

      OK: Each power seat motor operates. 

    NG: GO TO step 2 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

  2. INSPECT FRONT SEAT ADJUSTER SUB-ASSEMBLY (POWER SEAT MOTOR) 
    1. Inspect the power seat motor (See FRONT SEAT FRAME WITH ADJUSTER ).

      OK: The power seat motor operates. 

    NG: REPLACE FRONT SEAT ADJUSTER SUB-ASSEMBLY (POWER SEAT MOTOR) 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - POWER SEAT MOTOR) 
    1. Disconnect the position control ECU and switch assembly connector and power seat motor connectors.
    2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      P33-2 (SLD+) - P38-1 Always Below 1 Ω
      P33-3 (SLD-) - P38-2 Always Below 1 Ω
      P33-4 (FRV-) - P34-2 Always Below 1 Ω
      P33-6 (FRV+) - P34-1 Always Below 1 Ω
      P33-7 (LFT+) - P35-2 Always Below 1 Ω
      P33-9 (LFT-) - P35-1 Always Below 1 Ω
      P33-8 (RCL+) - P37-2 Always Below 1 Ω
      P33-10 (RCL-) - P37-1 Always Below 1 Ω
      P33-2 (SLD+) - Body ground Always 10 kΩ or higher
      P33-3 (SLD-) - Body ground Always 10 kΩ or higher
      P33-4 (FRV-) - Body ground Always 10 kΩ or higher
      P33-6 (FRV+) - Body ground Always 10 kΩ or higher
      P33-7 (LFT+) - Body ground Always 10 kΩ or higher
      P33-9 (LFT-) - Body ground Always 10 kΩ or higher
      P33-8 (RCL+) - Body ground Always 10 kΩ or higher
      P33-10 (RCL-) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 1: Identifying Position Control ECU And Switch Assembly Connector And Power Seat Motor Connector
    G05281310Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE