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Home >> Toyota >> 2008 >> Highlander Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 42 (Audio System & Visual System (Hybrid)) >> Audio And Visual System >> Bluetooth Handsfree Module Communication Error >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different variant/trim than selected.
  1. IDENTIFY THE COMPONENT SHOWN BY SUB-CODE 
    1. Enter the diagnostic mode.
      Fig 1: Identifying Service Check Mode And Detailed Information Mode
      G04966722Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Press the preset switch "3" to change to "Detailed Information Mode".
    3. Identify the component shown by the sub-code.

      HINT:

      • "P190" set by the radio receiver shown in the preceding illustration as an example.
      • For details of the DTC display, refer to "DTC CHECK/ CLEAR " (See DTC CHECK / CLEAR ).
  2. CHECK COMPONENT SHOWN BY SUB-CODE 
    1. Select the component shown by sub-code.

      HINT:

      The "Bluetooth" handsfree module is built into the radio receiver. If there is a problem between the "Bluetooth" handsfree module and radio receiver, replace the radio receiver.

    Component Table: 

    COMPONENT REFERENCE

    Component Proceed to
    Except Radio Receiver A
    Radio Receiver (190) B

    B: REPLACE RADIO RECEIVER  (See RADIO RECEIVER )

    A: Go to next step 

  3. 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 REFERENCE

    Component Proceed to
    Television display assembly (1 BO) Television display assembly power source circuit (See TELEVISION DISPLAY POWER SOURCE CIRCUIT )
    Stereo component amplifier (440) Stereo component amplifier power source circuit (See STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT )
  4. INSPECT RADIO RECEIVER 
    1. Disconnect the radio receiver connector.
      2. Fig 2: Identifying Radio Receiver
      G05626567Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      E2-5 (ATX+) - E2-15 (ATX-) Always 60 to 80 Ω
      E16-9 (TXM+) - E16-10 (TXM-) (*1) Always 60 to 80 Ω
      HINT:
      *1: w/ Rear Seat Entertainment System

    NG: REPLACE RADIO RECEIVER  (See RADIO RECEIVER )

    OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR ("BLUETOOTH" HANDSFREE MODULE - 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 " (See TERMINALS OF ECU ).
    1. Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the "Bluetooth" handsfree module and the component shown by the sub-code.
      1. Disconnect all connectors between the "Bluetooth" handsfree module and the component shown by the sub-code.
      2. Check for an open or short in the AVC-LAN circuit between the "Bluetooth" handsfree module and the component shown by the sub-code.

        OK: There is no open or short circuit. 

        Fig 3: AVC-LAN Circuit Wiring Diagram
        G05626487Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  6. 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 RADIO RECEIVER (BUILT-IN "BLUETOOTH" HANDSFREE MODULE)  (See RADIO RECEIVER )

    OK: END 

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