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Home >> Lexus >> 2009 >> LS 600hL >> Repair and Diagnosis >> External Pages >> Different car >> Section 42 (Audio/Visual) >> Audio And Visual System >> DTC 01-D6 No Master; DTC 01-D7 Connection Check Error >> Inspection Procedure
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Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Be sure to read the DESCRIPTION before performing the following procedures.
  1. CHECK DISPLAY AND NAVIGATION ASSEMBLY POWER SOURCE CIRCUIT (MULTI-DISPLAY POWER SOURCE CIRCUIT) 
    1. w/ Navigation System for HDD:

      Refer to the display and navigation assembly power source circuit (see DISPLAY AND NAVIGATION ASSEMBLY POWER SOURCE CIRCUIT ).

    2. w/ Navigation System for DVD:

      Refer to the multi-display power source circuit (see MULTI-DISPLAY POWER SOURCE CIRCUIT ).

    3. w/o Navigation System

      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 table 

      COMPONENT CHART

      Display Component
      AUDIO Radio receiver
      DSP-AMP Stereo component amplifier
      NAVI*5 Navigation ECU
      CLOCK Clock
      RSE*1 Television display
      DVD-P*2 Disc player
      CAMERA-C*3 Parking assist ECU
      Rr-CONT*6 Rear power seat module switch
      XM*4 Satellite radio tuner
      HINT:
      *1: w/ Rear Seat Entertainment System
      *2: w/ Disc Player
      *3: w/ Advanced Parking Guidance System
      *4: w/ Satellite Radio Tuner
      *5: w/ Navigation System for DVD
      *6: w/ Rear Power Seat Module Switch
      "NAVI" is the component which has stored this code in the example shown in the illustration.
      Fig 1: Screen Display - LAN Monitor
      G05783396Courtesy 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.

      Component table 

      COMPONENT CHART

      Display 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  )
      Navigation ECU (178) Navigation ECU power source circuit (see NAVIGATION ECU POWER SOURCE CIRCUIT )
      Clock (1D6) Clock power source circuit (see CLOCK POWER SOURCE CIRCUIT )
      Television display (1 F6)*1 Television display power source circuit (see TELEVISION DISPLAY POWER SOURCE CIRCUIT  )
      Disc player (1A0)*2 Disc player controller power source circuit (see DISC PLAYER CONTROLLER POWER SOURCE CIRCUIT  )
      Parking assist ECU (1AC)*3 Parking assist ECU power source circuit (see ECU POWER SOURCE CIRCUIT )
      Rear power seat module switch (1C0)*6 Rear seat control switch power source circuit (see REAR SEAT CONTROL SWITCH POWER SOURCE CIRCUIT  )
      Satellite radio tuner (1F1)*4 Satellite radio tuner power source circuit (see SATELLITE RADIO TUNER POWER SOURCE CIRCUIT )
      HINT:
      *1: w/ Rear Seat Entertainment System
      *2: w/ Disc Player
      *3: w/ Advanced Parking Guidance System
      *4: w/ Satellite Radio Tuner
      *5: w/ Navigation System for DVD
      *6: w/ Rear Power Seat Module Switch

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

  4. INSPECT RADIO RECEIVER 
    Fig 2: Identifying Radio Receiver's L51, L52 and L53 Connector Terminals
    G05783397Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L51, L52 and L53 receiver connectors
    2. Measure the resistance according to the value(s) in the table below

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      L51-5 (ATX+) - L51-15 (ATX-) Always 60 to 80 Ω
      L52-9 (TX+) - L52-10 (TX-)
      L53-9 (TXM+) - L53-10 (TXM-)

    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. Referring to the AVC-LAN wiring diagram, 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: AVC-LAN Wiring Diagram
        G05783398Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    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. 

      Result 

      RESULT CHART

      Result Proceed to
      OK A
      NG (w/ Navigation system for HDD) B
      NG (w/ Navigation system for DVD) C
      NG (w/o Navigation system) D

    B: REPLACE DISPLAY AND NAVIGATION ASSEMBLY  (see REMOVAL )

    C: REPLACE MULTI-DISPLAY  (see REMOVAL )

    D: REPLACE MULTI-DISPLAY  (See REMOVAL  )

    A: END 

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