FixVault
Home › Toyota › 2006 › Avalon XLS › Repair and Diagnosis (Single Page) › Accessories & Equipment › Infotainment › Navigation › Navigation System › Multi-display Communication Error › Inspection Procedure

Inspection Procedure

  1. IDENTIFY THE 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 Fig 1.
      • The sub-code will be indicated by its physical address.
        Fig 1: Identifying Display Screen - Multi-Display Communication
        G04380298Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NEXT 

  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 Proceed to
      Radio receiver (190) Radio receiver power source circuit (See RADIO RECEIVER POWER SOURCE CIRCUIT )
      Stereo component amplifier (440) Stereo component amplifier power source circuit (See STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT )
      Gateway ECU (1C6) Gateway ECU power source circuit (See GATEWAY ECU POWER SOURCE CIRCUIT  )
      Navigation ECU (178) Navigation ECU power source circuit (See NAVIGATION ECU POWER SOURCE CIRCUIT )
      Clock assembly (1D6) Clock power source circuit (See CLOCK POWER SOURCE CIRCUIT )

    NEXT 

  3. INSPECT RADIO RECEIVER 
    1. Disconnect the radio receiver connectors.
      Fig 2: Identifying Radio Receiver Connector Terminals
      G04380299Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.
      STANDARD RESISTANCE SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      ATX+ (E12-5) - ATX- (E12-15) ((1)) Always 60 to 80
      TX+ (E15-9) - TX- (E15-10) Always 60 to 80
      (1) for 12 Speaker System

    NG: REPLACE RADIO RECEIVER 

    OK: GO TO NEXT STEP 

  4. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - COMPONENT SHOWN BY SUB-CODE) 

    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 multi-display and the component shown by the sub-code.
      1. Disconnect all connectors between the multi-display and the component shown by sub-code.
      2. Check for an open or short in the AVC-LAN circuit between the multi-display and the component shown by the sub-code.

        OK: 

        There is no open or short circuit. 

        Fig 3: AVC - LAN Wiring Diagram
        G04380300Courtesy 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 MULTI-DISPLAY 

    OK: END 

About FixVault