2007 Lexus GX 470FACTORY OEM SERVICE PROCEDURE

DTC Check/Clear

  1. DTC CHECK/CLEAR (SST CHECK WIRE) 
    1. DTC check
      1. Using SST, connect terminals TC and CG of the DLC3.

        SST 09843-18040 

      2. Turn the ignition switch to the ON position.
      3. Read the DTCs from the ABS and VSC TRAC warning lights on the combination meter.

        HINT:

        If no code appears, inspect the TC and CG terminal circuit, and the ABS and VSC TRAC warning light circuits.

        Fig 1: Identifying DLC3 Terminals TC & CG
        G04965414Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TROUBLE AREA REFERENCE TABLE

        Trouble Area Information
        TC and CG terminal circuit TC AND CG TERMINAL CIRCUIT 
        ABS warning light circuit ABS WARNING LIGHT REMAINS ON  or ABS WARNING LIGHT DOES NOT COME ON 
        VSC TRAC warning light circuit VSC TRAC WARNING LIGHT REMAINS ON  or VSC TRAC WARNING LIGHT DOES NOT COME ON 
      4. As examples, refer to the graphic below for the blinking patterns of the normal system code and trouble codes 11 and 21.
        Fig 2: Blinking Pattern Of Trouble Code (Examples Codes 11 & 21)
        G04965415Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. Codes are explained in the code table (See DIAGNOSTIC TROUBLE CODE TABLE  ).
      6. After completing the check, disconnect terminals TC and CG of the DLC3, and turn off the display. If 2 or more DTCs are detected at the same time, the DTCs will be displayed in ascending order.
    2. DTC clear
        Fig 3: Identifying DLC3 Terminals Of TC & CG
        G04832160Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using SST, connect terminals TC and CG of the DLC3.

        SST 09843-18040 

      2. Turn the ignition switch to the ON position.
        3. Fig 4: Depressing Brake Pedal
        G04832173Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Clear the DTCs stored in the ECU by depressing the brake pedal 8 times or more within 5 seconds.
      4. Check that the warning light indicates a normal system code.
      5. Remove the SST from the terminals of the DLC3.

        HINT:

        Clearing the DTCs cannot be performed by removing the battery cable or the ECU-IG fuse.

  2. DTC CHECK/CLEAR (INTELLIGENT TESTER) 
    1. DTC check
      1. Connect the intelligent tester to the DLC3.
      2. Turn the ignition switch to the ON position.
      3. Read the DTCs following the prompts on the tester screen.
    2. DTC clear
      1. Connect the intelligent tester to the DLC3.
      2. Turn the ignition switch to the ON position.
      3. Operate the intelligent tester to clear the codes.

        HINT:

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

        Fig 5: Connecting Intelligent Tester To DLC3
        G05262223Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. END OF DTC CHECK/CLEAR 
    1. Turn the ignition switch to the ON position
    2. Check that the ABS and VSC TRAC warning lights go off within approximately 3 seconds.
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  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
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