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Home >> Toyota >> 2012 >> Sienna SE >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Seats >> Auto Access Seat System (Diagnostic Codes & Symptom Tests) >> Auto Access Seat System >> DTC 11: Reclining Motor Malfunction >> Procedure

DTC 11: Reclining Motor Malfunction: Procedure

  1. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY) 
    1. Disconnect the R5 rear seat with adjuster frame assembly LH (reclining motor) connector.
      Fig 1: Checking R5 LH (Reclining Motor)
      GTY294788Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      R5-4 - Body ground Power seat switch assembly (up switch) off → on Below 1 V → 11 to 14 V
      No. 2 power seat switch assembly (up switch) off → on Below 1 V → 11 to 14 V
      R5-3 - Body ground Power seat switch assembly (down switch) off → on Below 1 V → 11 to 14 V
      No. 2 power seat switch assembly (down switch) off → on Below 1 V → 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Rear Seat with Adjuster Frame Assembly LH (Reclining Motor))
    3. Reconnect the rear seat with adjuster frame assembly LH (reclining motor) connector.

    NG → See step   2 

    OK → See step   3 

  2. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - RECLINING MOTOR) 
    1. Disconnect the Q3 position control ECU assembly connector.
    2. Disconnect the R5 rear seat with adjuster frame assembly LH (reclining motor) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Q3-2 (RCUP) - R5-4 Always Below 1 Ω
      Q3-5 (RCDN) - R5-3 Always Below 1 Ω
      Q3-2 (RCUP) - Body ground Always 10 kΩ or higher
      Q3-5 (RCDN) - Body ground Always 10 kΩ or higher
    4. Reconnect the rear seat with adjuster frame assembly LH (reclining motor) connector.
    5. Reconnect the position control ECU assembly connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   4 

  3. REPLACE REAR SEAT WITH ADJUSTER FRAME ASSEMBLY LH (RECLINING MOTOR). Refer to  DISASSEMBLY 
  4. REPLACE POSITION CONTROL ECU ASSEMBLY. Refer to  DISASSEMBLY