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DTC 01-DC Transmission Error: Description

01-DC TRANSMISSION ERROR

DTC No. DTC Detection Condition Trouble Area
01-DC
*1		 Transmission to component shown by sub-code failed (Detecting this DTC does not always mean actual failure) If the same sub-code is recorded in other components, check harness for power supply and communication system of all components shown by code

HINT:

*1: This code may be stored if the engine is started, idled for 60 seconds and then started again.

NOTE:
  • Before starting troubleshooting, be sure to clear DTCs to erase codes stored due to the reasons described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs.
  • The radio receiver is the master unit.
  • Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.
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.

        Result 

        DTC OF OTHER COMPONENTS

        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 COMPONENT WHICH HAS STORED THIS CODE  .

    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: Entering Diagnostic Mode (Example)
      G04495023Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Press the preset switch "3" to change to "Detailed Information Mode".
    3. Identify the component which has stored this code.

      Component Table: 

      COMPONENT WHICH HAS STORED THIS CODE

      Component Physical address
      Stereo component amplifier 440
      Television display assembly 1B0
      Radio receiver 190

      HINT:

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

      Component Table: 

      COMPONENT WHICH HAS STORED THIS CODE

      Component Proceed to
      Stereo component amplifier Stereo component amplifier communication error (See STEREO COMPONENT AMPLIFIER COMMUNICATION ERROR  )
      Television display assembly Television display assembly communication error (See TELEVISION DISPLAY ASSEMBLY COMMUNICATION ERROR )
      Radio receiver Radio receiver communication error (See RADIO RECEIVER 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 code occurs again.

      OK: Malfunction disappears. 

    NG: Go to step   3 

    OK: END 

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