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Inspection Procedure

  1. CHECK WIRE HARNESS (RADIO RECEIVER ASSY - AUDIO DOOR CONTROL SWITCH) 
    1. Disconnect the R1 receiver connector.
    2. Disconnect the A25 switch connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard: 

      RADIO RECEIVER ASSY - AUDIO DOOR CONTROL SWITCH RESISTANCE

      Tester Connection Specified Condition
      R1-2 (DOS1) - A25-8 Below 1 ohms
      R1-2 (DOS1) - Body ground 10 k ohms or higher
      Fig 1: Identifying Radio Receiver & Audio Door Control Switch Connector Terminal
      G02956382Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: Go to next step. 
  2. CHECK WIRE HARNESS (AUDIO DOOR CONTROL SWITCH - BATTERY AND BODY GROUND) 
    1. Disconnect A25 connector.
    2. Measure the resistance and voltage of the wire harness side connector.

      Standard: 

      AUDIO DOOR CONTROL SWITCH - BATTERY AND BODY GROUND SPECIFIED CONDITION

      Tester connection Condition Specified Condition
      A25-6 (GND) - Body ground Always Below 1 ohms
      A25-10 (+B) - A25-6 (GND) Always 10 to 14 V
      A25-4 (ACC) - A25-6 (GND) Ignition switch ACC 10 to 14 V
      Fig 2: Identifying Audio Door Control Switch Connector Terminal
      G02956383Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: Go to next step. 
  3. REPLACE INSTRUMENT CLUSTER FINISH PANEL SUB-ASSY LOWER CENTER (AUDIO DOOR CONTROL SWITCH) 
    1. After replacing the instrument cluster finish panel sub-assy lower center (audio door control switch), check that the audio door can be opened and closed by using the audio door control switch.

      OK: Audio door can be opened and closed with switch. 

    1. NG: REPLACE RADIO RECEIVER ASSY (See  REPLACEMENT  ) 
    2. OK: END.