LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2009 >> RAV4 Base, 2.5 F, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Audio/Visual >> Audio And Visual System >> DTC 01-DC Transmission Error >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

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 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.

    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

    HINT:

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

    B: Go to step  4

    A: Go to next step 

  2. IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE 
    1. Enter the diagnostic mode.
      Fig 1: Identifying Diagnostic Mode
      G05184731Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Press the preset switch "2" to change to "Detailed Information Mode".
    3. Identify the component which has stored this code.

    Component Table: 

    COMPONENT REFERENCE CHART

    Component Physical address
    Stereo component amplifier 440
    Radio receiver 190

    HINT:

    • "440 (Stereo component amplifier)" is the component which has stored this code in the example shown in the illustration.
    • For details of the DTC display, refer to the "DTC CHECK/CLEAR " (See ).
  3. CHECK COMPONENT WHICH HAS STORED THIS CODE 
    1. Select the component which has stored this code.

    Component Table: 

    COMPONENT REFERENCE CHART

    Component Proceed to
    Stereo component amplifier Stereo component amplifier communication error (See STEREO COMPONENT AMPLIFIER COMMUNICATION ERROR )
    Radio receiver Radio receiver communication error (See RADIO RECEIVER COMMUNICATION ERROR )

    NEXT: END 

  4. CLEAR DTC 
    1. Clear the DTC (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 the DTC and check if the same trouble code occurs again.

      OK: 

      Malfunction disappears. 

    NG: Go to step  3

    OK: END