LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2006 >> IS 250 AWD >> Repair and Diagnosis >> Transmission >> Transfer Case >> Transfer >> Four Wheel Drive Control System >> DTC Check / Clear
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Check / Clear

  1. DTC CHECK (INTELLIGENT TESTER) 
    1. Check the DTCs.
      1. Connect the intelligent tester to the DLC3.
      2. Turn the engine switch on (IG).
      3. Check the DTCs by following the prompts on the tester screen.
      Fig 1: Connecting Intelligent Tester To DLC3
      G04049682Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      Refer to the intelligent tester operator's manual for further details.

    2. Clear the DTCs.
      1. Connect the intelligent tester to the DLC3.
      2. Turn the engine switch on (IG).
      3. Clear the DTCs by following the prompts on the tester screen.

      HINT:

      Refer to the intelligent tester operator's manual for further details.

  2. DTC CHECK (SST CHECK WIRE) 
  1. Check the DTCs.
    1. Using the SST, connect terminals TC and CG of the DLC3 (enter in the DTC output mode).

      SST 09843-18040 

      Fig 2: Identifying Terminals TC & CG Of DLC3
      G04046710Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the engine switch on (IG).
    3. "DIAG" is displayed on the multi-information display, and the 4WD control ECU checks the system for malfunctions.
    4. If the 4WD control system is normal, "DIAG 4WD OK" will be displayed on the multi-information display (normal system code).
      Fig 3: Display DIAG 4WD OK On Multi-Information Display
      G04046711Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. If the 4WD control system is not normal, "DIAG 4WD XX (DTC)" will be displayed on the multi-information display.
    Fig 4: Display DIAG 4WD XX (DTC) On Multi-Information Display
    G04046712Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Clear the DTCs.
    1. Using SST, connect terminals TC and CG of the DLC3.

      SST 09843-18040 

    2. Turn the engine switch on (IG).
      Fig 5: Identifying Terminals TC & CG Of DLC3
      G04046713Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Clear the DTCs stored in the 4WD control ECU by depressing the brake pedal 8 times or more within 5 seconds.
    4. Check that the 4WD indicator light (multi-information display) indicated a "4WD OK".
      Fig 6: Display 4WD OK On Multi-Information Display
      G04046714Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Turn the engine switch off.
    6. Remove the SST from the terminals of DLC3.