CRUISE CONTROL SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips

  • Use the following procedure to troubleshoot the cruise control system.

  • *: Use the Techstream.

  1. VEHICLE BROUGHT TO WORKSHOP

    NEXT

  2. INSPECT AUXILIARY BATTERY VOLTAGE

    1. Measure the auxiliary battery voltage with the power switch off.

      Standard Voltage
      11 to 14 V

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

      NEXT

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

    1. Use the Techstream 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

  4. 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 reproduce the DTCs by duplicating the conditions indicated by the DTCs.

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

      GO TO DTC CHART Click here

      A

  5. 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 7
    A

  6. OVERALL ANALYSIS AND TROUBLESHOOTING*

    1. Terminals of ECU Click here

    2. Data List / Active Test Click here

      NEXT

  7. ADJUST, REPAIR OR REPLACE

    NEXT

  8. CONFIRMATION TEST

    NEXT
    END