CRUISE CONTROL SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use these procedures to troubleshoot the cruise control system.

  • *: Use the intelligent tester.


  1. VEHICLE BROUGHT TO WORKSHOP


    NEXT

  2. INSPECT BATTERY VOLTAGE

    Standard Voltage
    11 to 14 V

    If the voltage is below 11 V, replace or recharge the battery before proceeding.


    NEXT

  3. CHECK COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)*


    1. Use the intelligent tester to check if the multiplex communication system (MPX) is functioning normally.

      Result
      Result Proceed to
      MPX DTC is not output A
      MPX DTC is output B

      B

      GO TO MULTIPLEX COMMUNICATION SYSTEM Click here

      A

  4. CHECK COMMUNICATION FUNCTION OF CONTROLLER AREA NETWORK (CAN)*


    1. Use the intelligent tester to check if the CAN communication system is functioning normally.

      Result
      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output B

      B

      GO TO CAN COMMUNICATION SYSTEM Click here

      A

  5. CHECK FOR DTC*

    Refer to DTC Check / Clear Click here.


    1. Check for DTCs and note any codes that are output.

    2. Clear the DTCs.

    3. Recheck for DTCs. Try to prompt the DTCs by simulating the original activity that the DTCs suggest.

      Result
      Result Proceed to
      DTC does not reoccur A
      DTC reoccur B

      B

      Go to step 8
      A

  6. PROBLEM SYMPTOMS TABLE

    Refer to Problem Symptoms Table Click here.

    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 8
    A

  7. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Terminals of ECM Click here

    2. Data List / Active Test Click here


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  8. ADJUST, REPAIR OR REPLACE


    NEXT

  9. CONFIRMATION TEST


    NEXT
    END