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Inspection Procedure

  1. IDENTIFY COMPONENT SHOWN BY SUB-CODE 
    1. Enter the diagnostic mode.
    2. Press the "LAN Mon" switch to change to "LAN Monitor" mode.
    3. Identify the component shown by the sub-code.

      HINT:

      • "110 (multi-display)" is the component shown by the sub-code in the example shown in the illustration.
        • Fig 1: Identifying Screen Display -LAN Monitor
        G04949081Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • The sub-code will be indicated by its physical address.
      • For the component list, refer to "DIAGNOSIS DISPLAY DETAILED DESCRIPTION " .
  2. CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE 
    1. Inspect the power source circuit of the component shown by the sub-code.

      If the power source circuit is operating normally, proceed to the next step.

      Component table: 

      COMPONENT TABLE

      Component Proceed to
      Radio receiver (190) RADIO RECEIVER POWER SOURCE CIRCUIT
      Stereo component amplifier (440) STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT
      Clock (1D6) CLOCK POWER SOURCE CIRCUIT
      Television display (1F6) TELEVISION DISPLAY POWER SOURCE CIRCUIT
      Parking assist ECU (1AC) ECU POWER SOURCE CIRCUIT
      Display and navigation assembly (118) DISPLAY AND NAVIGATION ASSEMBLY POWER SOURCE CIRCUIT 
      Rear power seat module switch (1C0) REAR POWER SEAT MODULE SWITCH POWER SOURCE CIRCUIT 
      Satellite radio tuner (1F1) SATELLITE RADIO TUNER POWER SOURCE CIRCUIT 
  3. INSPECT RADIO RECEIVER ASSEMBLY 
    Fig 2: Identifying Radio Receiver Assembly Connector Terminals
    G04945302Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L53, L51, L52 or L57 receiver connectors.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      L53-9 (TXM+) - L53-10 (TXM-) Always 60 to 80 Ω
      L51-5 (ATX+) - L51-15 (ATX-) Always 60 to 80 Ω
      L52-9 (TX+) - L52-10 (TX-H Always 60 to 80 Ω
      L57-9 (TX+) - L57-10 (TX-)*2 Always 60 to 80 Ω
      HINT:
      *1: for DVD Changer Models
      *2: for CD Changer Models

    NG: REPLACE RADIO RECEIVER ASSEMBLY  (See REMOVAL )

    OK: GO TO NEXT STEP 

  4. CHECK HARNESS AND CONNECTOR (DISC PLAYER - COMPONENT SHOWN BY SUBCODE) 

    HINT:

    • Start the check from the circuit that is near the component shown by the sub-code first.
    • For details of the connectors, refer to "TERMINALS OF ECU " .
    1. Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the disc player and the component shown by the sub-code.
      1. Disconnect all connectors between the disc player and the component shown by sub-code.
      2. Check for an open or short in the AVC-LAN circuit between the disc player and the component shown by the sub-code.

        OK: There is no open or short circuit. 

        Fig 3: Identifying AVC-LAN Wiring Diagram
        G04945538Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: GO TO NEXT STEP 

  5. REPLACE COMPONENT SHOWN BY SUB-CODE 
    1. Replace the component shown by the sub-code with a normal one and check if the same problem occurs again.

      OK: Same problem does not occur. 

    NG: REPLACE DISC PLAYER ASSEMBLY  (See DISC PLAYER (FOR OTTOMAN) )

    OK: END 

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