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Inspection Procedure

WARNING: This page is about a different car, the 2009 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Be sure to read 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 DISPLAY

      Display Component
      G/W Gateway ECU
      DSP-AMP Stereo component amplifier
      AUDIO H/U Radio receiver
      HINT:
      "G/W" is the component which has stored this code in the example shown in the illustration.
      Fig 1: Pressing "LAN Mon" Switch To Change To "LAN Monitor" Mode
      G05189812Courtesy 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 DISPLAY

      Component Proceed to
      Gateway ECU (G//W) GATEWAY ECU POWER SOURCE CIRCUIT 
      Stereo component amplifier (DSP-AMP) STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT 
      Radio receiver (AUDIO H/U) RADIO RECEIVER POWER SOURCE CIRCUIT 
  4. INSPECT RADIO RECEIVER 
    1. for 9 Speaker System:

      Disconnect the R5 and R6 receiver connectors.

    2. for 6 Speaker System: Disconnect the R5 receiver connector.
    3. Measure the resistance of the receiver.

      Standard resistance 

      STANDARD RESISTANCE

      Tester Connection Specified Condition
      R5-9 (TX1+) - R5-10 (TX1-)*1 60 to 80 Ω
      R5-9 (TX+) - R5-10(TX-)*2 60 to 80 Ω
      R6-5 (TX+) - R6-15(TX-)*2 60 to 80 Ω
      HINT:
      • *1: for 6 speaker system
      • *2: for 9 speaker system

    NG: REPLACE RADIO RECEIVER 

    Fig 2: Identifying R5 And R6 Receiver Connectors Terminals
    G05189813Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

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

    HINT:

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

    1. Referring to the AVC-LAN wiring diagram below, 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. 

        Fig 3: Audio And Visual System AVC-LAN - Circuit Diagram
        G05189814Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS AND 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 

    OK: END 

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