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Inspection Procedure

NOTE: Be sure to read the Description before performing the following procedures.
  1. CHECK MULTI-DISPLAY POWER SOURCE CIRCUIT 
    1. Refer to the MULTI-DISPLAY POWER SOURCE CIRCUIT  ).

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

  2. IDENTIFY COMPONENT WHICH HAS STORED THIS CODE 
    1. Enter the diagnostic mode.
    2. Press the "LAN Mon" switch to change to "LAN Monitor" mode.
    3. Identify the component which has stored this code.

      Component Table 

    COMPONENT SPECIFICATION

    Display Component
    AUDIO Radio receiver
    DSP-AMP Stereo component amplifier
    EMV Multi-display
    NAVI Navigation ECU
    RSE Television display

    HINT:

    "NAVI" is the component which has stored this code in the example shown in the illustration.

    Fig 1: Display - Press LAN Mon Switch To LAN Monitor Mode
    G05630677Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. CHECK POWER SOURCE CIRCUIT OF COMPONENT WHICH HAS STORED THIS CODE 
    1. Inspect the power source circuit of the component which has stored this code.

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

      Component Table 

    COMPONENT SPECIFICATION

    Component Proceed To
    Radio receiver (AUDIO) Radio receiver power source circuit (See RADIO RECEIVER POWER SOURCE CIRCUIT )
    Stereo component amplifier (DSP-AMP) Stereo component amplifier power source circuit (See STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT )
    Multi-display (EMV) Multi-display power source circuit (See MULTI-DISPLAY POWER SOURCE CIRCUIT  )
    Navigation ECU (NAVI) Navigation ECU power source circuit (See NAVIGATION ECU POWER SOURCE CIRCUIT  )
    Television display (RSE) Television display power source circuit (See TELEVISION DISPLAY POWER SOURCE CIRCUIT )
  4. INSPECT RADIO RECEIVER ASSEMBLY 
    Fig 2: Identifying F1 & F23 Receiver Connectors Terminals
    G05630678Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F1 and F23 receiver connectors.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

    RESISTANCE REFERENCE

    Tester Connection Condition Specified Condition
    F1-5 (ATX+) - F1-15 (ATX-) Always 60 to 80 Ω
    F23-9 (TX+) - F23-10 (TX-) Always 60 to 80 Ω

    NG: REPLACE RADIO RECEIVER ASSEMBLY  (See REMOVAL )

    OK: Go to Next Step 

  5. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - COMPONENT WHICH HAS STORED THIS CODE) 

    HINT:

    For details of the connectors, refer to TERMINALS OF ECU  ).

    1. Check the AVC-LAN circuit between the multi-display and the component which has stored this code.
    1. Disconnect all connectors between the multi-display and the component which has stored this code.
    2. Check for an open or short in the AVC-LAN circuit between the multi-display and the component which has stored this code.

      OK: There is no open or short circuit. 

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  6. REPLACE COMPONENT WHICH HAS STORED THIS CODE 
    1. Replace the component which has stored this code with a normal one and check if the same problem occurs again.

      OK: Same problem does not occur. 

    NG: REPLACE MULTI-DISPLAY  (See MULTI-DISPLAY (W/NAVIGATION SYSTEM)  )

    OK: END 

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