Cruise Control System How To Proceed With Troubleshooting

Cruise Control System. Lexus Gs430, Gs300. Uzs190 Grs190
Cruise Control. Lexus Gs430, Gs300. Uzs190 Grs190

  1. VEHICLE BROUGHT TO WORKSHOP

  2. PROBLEM SYMPTOM CONFIRMATION

  3. CHECK MULTIPLEX COMMUNICATION SYSTEM*

  4. CHECK CAN COMMUNICATION SYSTEM*

  5. DTC CHECK AND CLEAR*

  6. DTC CHECK (OTHER THAN MPX AND CAN SYSTEM DTC)*

  7. DTC CHART

  8. PROBLEM SYMPTOM SIMULATION

  9. SYMPTOM SIMULATION

  10. PROBLEM SYMPTOMS TABLE

  11. CIRCUIT INSPECTION

  12. TERMINALS OF ECU

  13. IDENTIFICATION OF PROBLEM

  14. REPAIR OR REPLACE

  15. CONFIRMATION TEST

Cruise Control System -- How To Proceed With Troubleshooting


HINT:
  1. Use these procedures to troubleshoot the cruise control system.
  2. *: Use the intelligent tester.


1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.PROBLEM SYMPTOM CONFIRMATION

      NEXT


      3.CHECK MULTIPLEX COMMUNICATION SYSTEM*
        Refer to how to proceed with troubleshooting (Click here).

      1. Check for output DTCs.

        Result:
        Result
        		Proceed to
        MPX DTC is not output
        		A
        MPX DTC is output
        		B
        HINT:
        The ECM of this system is connected to the multiplex communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the Multiplex Communication System (MPX).


      		B.
      PROCEED TO "MULTIPLEX COMMUNICATION SYSTEM"
      A


      4.CHECK CAN COMMUNICATION SYSTEM*
        Refer to the precaution (Click here).

      1. Check for output DTCs.

        Result:
        Result
        		Proceed to
        CAN DTC is not output
        		A
        CAN DTC is output
        		B
        HINT:
        The ECM of this system is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN communication system.


      		B.
      PROCEED TO "CAN COMMUNICATION SYSTEM"
      A


      5.DTC CHECK AND CLEAR*
        Refer to the DTC CHECK / CLEAR (Click here).

      NEXT


      6.DTC CHECK (OTHER THAN MPX AND CAN SYSTEM DTC)*
        Refer to the DTC CHECK / CLEAR (Click here).
        Result:
        Result
        		Proceed to
        DTC is not output
        		A
        DTC is output
        		B


      		A.
      GO TO STEP 8
      B


      7.DTC CHART
        Refer to the diagnostic trouble code chart (Click here).

      NEXT

      GO TO STEP 11


      8.PROBLEM SYMPTOM SIMULATION

        Result:

        Result
        		Proceed to
        Fault is not listed in problem symptoms table
        		A
        Fault is listed in problem symptoms table
        		B


      		B.
      GO TO STEP 10
      A


      9.SYMPTOM SIMULATION
        Refer to the electronic circuit inspection procedure (Click here).

      NEXT


      10.PROBLEM SYMPTOMS TABLE
        Refer to the problem symptoms table (Click here).

      NEXT


      11.CIRCUIT INSPECTION
        Refer to the P0500 (Click here).Refer to the TC and CG terminal circuit (Click here).

      NEXT


      12.TERMINALS OF ECU
        Refer to the terminals of ECU (Click here).

      NEXT


      13.IDENTIFICATION OF PROBLEM

        NEXT


        14.REPAIR OR REPLACE

          NEXT


          15.CONFIRMATION TEST

            NEXT

            END