LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2004 >> RX 330 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 541 (Navigation) >> Navigation System >> DTC 01-DC: Transmission Error >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus RX 350. 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 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 step  2.

        Result 

        RESULT TABLE

        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 THE 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 TABLE

      Display Component
      AUDIO H/U (190) Radio receiver
      DSP-AMP (440) Stereo component amplifier
      G/W (1C6) Gateway ECU
      NAVI (178) Navigation ECU
      EMV (110) Multi-display
      Rr-TV (1B0) Television display assembly

      HINT:

      "NAVI" is the component which has stored this code.

      Fig 1: Identifying Diagnostic Tool Display - LAN Mon
      G04966893Courtesy 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 TABLE

      Component Proceed to
      Gateway ECU (G/W) GATEWAY ECU COMMUNICATION ERROR 
      Radio receiver (AUDIO H/U) RADIO RECEIVER COMMUNICATION ERROR 
      Stereo component amplifier (DSP-AMP) STEREO COMPONENT AMPLIFIER COMMUNICATION ERROR 
      Navigation ECU (NAVI) NAVIGATION ECU COMMUNICATION ERROR 
      Multi-display (EMV) MULTI-DISPLAY COMMUNICATION ERROR 
      Television display assembly (Rr-TV) TELEVISION DISPLAY ASSEMBLY COMMUNICATION ERROR 

    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   3 

    OK: END 

scientia non olet · About LEMON Manuals