LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2006 >> Tacoma PreRunner, 2D Pickup >> Repair and Diagnosis >> External Pages >> Different car >> Section 35 (Navigation) >> Navigation System >> Clock Communication Error >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
  1. IDENTIFY THE COMPONENT SHOWN BY SUB-CODE 
    1. Enter the diagnostic mode.
      Fig 1: Identifying Display Screen - Clock Communication
      G04380304Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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.

    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
      Gateway ECU (1C6) Gateway ECU power source circuit (See GATEWAY ECU POWER SOURCE CIRCUIT )
      Stereo component amplifier (440) Stereo component amplifier power source circuit (See STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT )
      Multi-display (110) Multi-display power source circuit (See MULTI-DISPLAY POWER SOURCE CIRCUIT )
      Navigation ECU (178) Navigation ECU power source circuit (See NAVIGATION ECU POWER SOURCE CIRCUIT )
      Radio receiver (190) Radio receiver power source circuit (See RADIO RECEIVER POWER SOURCE CIRCUIT )

    NEXT 

  3. INSPECT RADIO RECEIVER 
    1. Disconnect the radio receiver connectors.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      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 

    Fig 2: Identifying Radio Receiver Connector Terminals
    G04380305Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO TO NEXT STEP 

  4. CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY - 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 clock assembly and the component shown by the sub-code.
      1. Disconnect all connectors between the clock assembly and the component shown by sub-code.
      2. Check for an open or short in the AVC-LAN circuit between the clock assembly and the component shown by the sub-code.
        Fig 3: AVC - LAN Wiring Diagram
        G04380306Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        OK: 

        There is no open or short circuit. 

    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 CLOCK ASSEMBLY 

    OK: END 

scientia non olet · About LEMON Manuals