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


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  2. INSPECT AUXILIARY BATTERY VOLTAGE

    Standard voltage
    11 to 14 V

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


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  3. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


    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 (for LHD) B
      CAN DTC is output (for RHD) C

      B

      Go to CAN COMMUNICATION SYSTEM Click here

      C

      Go to CAN COMMUNICATION SYSTEM Click here

      A

  4. CHECK INDICATOR LIGHT


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  5. CHECK FOR DTC*


    1. Clear the DTCs Click here.

    2. Recheck for DTCs Click here.

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

      B

      Go to DIAGNOSTIC TROUBLE CODE CHART Click here

      A

  6. PROBLEM SYMPTOMS TABLE


    1. Refer to the 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

      ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE
      A

  7. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Terminals of ECU Click here.

    2. Data List / Active Test Click here.


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  8. REPAIR OR REPLACE


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  9. CONFIRMATION TEST


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    END