2008 Toyota 4Runner Sport, 4.0 U, RWDFACTORY OEM SERVICE PROCEDURE

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 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 

        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 step 2.

    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 Service Check Mode And Detailed Information Mode
      G04966653Courtesy 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 CHART

      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 the illustration.
      • 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 CHART

      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 

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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