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Home >> Toyota >> 2009 >> Tundra Base, 4.0 U >> Repair and Diagnosis >> External Pages >> Different car >> Section 116 (Navigation/Multi-Info Display) >> Navigation System >> DTC 01-DC Transmission Error >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Sequoia. 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 FOR DTC OF OTHER COMPONENTS 
    1. Check if the component shown by the sub-code is displayed in the check result of the other components.
      1. Check if "01-DC" is output for the other components.
    2. If "01-DC" is output for any other components, check if the same physical address is displayed.

      HINT:

      For the list of the components shown by sub-codes, refer to the table in the next step.

      Result 

      RESULT REFERENCE

      Result Proceed to
      "01-DC" is output and the same physical address is displayed A
      "01-DC" is not output or the same physical address is not displayed B

    B:  Go to step  4

    A: Go to 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 REFERENCE

      Display Component
      AVN Navigation receiver assembly
      DSP-AMP Stereo component amplifier assembly
      Rr-TV* Television display assembly
      HINT:
      • "DSP-AMP" is the component which has stored this code in the example shown in the illustration.
      • *: w/ Rear Seat Entertainment System
      Fig 1: Identifying LAN Monitor Mode
      G05652556Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. CHECK COMPONENT WHICH HAS STORED THIS CODE 
    1. Select the component which has stored this code.

      Component Table 

      COMPONENT REFERENCE

      Component Proceed to
      Navigation receiver assembly (AVN) Navigation receiver communication error (See NAVIGATION RECEIVER ASSEMBLY COMMUNICATION ERROR  )
      Stereo component amplifier assembly (DSP-AMP) Stereo component amplifier communication error (See STEREO COMPONENT AMPLIFIER COMMUNICATION ERROR  )
      Television display assembly (Rr-TV)* Television display communication error (See TELEVISION DISPLAY ASSEMBLY COMMUNICATION ERROR  )
      HINT:
      *: w/ Rear Seat Entertainment System

    NEXT: END 

  4. CLEAR DTC 
    1. Clear the DTCs (See DTC CHECK/CLEAR  ).

      HINT:

      If "01-DC" is output for only one component, this may not indicate a malfunction.

  5. RECHECK DTC 
    1. Recheck for DTCs and check if the same trouble occurs again.

      OK: Malfunction disappears. 

    NG: Go to step 6 

    OK: USE SIMULATION METHOD TO CHECK  (See HOW TO PROCEED WITH TROUBLESHOOTING )

  6. CHECK COMPONENT WHICH HAS STORED THIS CODE 
    1. Select the component which has stored this code.

      Component Table 

      COMPONENT REFERENCE

      Component Proceed to
      Navigation receiver assembly (AVN) Navigation receiver communication error (See TELEVISION DISPLAY ASSEMBLY COMMUNICATION ERROR  )
      Stereo component amplifier assembly (DSP-AMP) Stereo component amplifier communication error (See NAVIGATION RECEIVER ASSEMBLY COMMUNICATION ERROR  )
      Television display assembly (Rr-TV)* Television display communication error (See STEREO COMPONENT AMPLIFIER COMMUNICATION ERROR  )
      HINT:
      *: w/ Rear Seat Entertainment System

    NEXT: END 

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