FOUR WHEEL DRIVE CONTROL SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips

The GTS can be used in steps 3, 4, 6 and 11.


  1. VEHICLE BROUGHT TO WORKSHOP


    NEXT

  2. CUSTOMER PROBLEM ANALYSIS


    1. Confirm problem symptoms.


      NEXT

  3. CHECK CAN COMMUNICATION SYSTEM


    1. Check for DTCs Click here.

      Tech Tips

      The ECU of this system is connected to the CAN communication system.

      Therefore before starting troubleshooting, make sure to check that there is no trouble in CAN communication system.

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

      B

      CHECK CAN COMMUNICATION CIRCUIT
      A

  4. CHECK DTC


    1. Check for DTCs Click here.


      1. Record the DTCs.

    2. Clear the DTCs.

    3. Recheck for DTCs.


      1. Simulate the malfunction and check if the DTCs are output again.

        Result
        Result Proceed to
        DTC is output A
        DTC is not output B
        DTCs are not output, and the malfunction cannot be simulated or checked C

      B

      GO TO STEP 10
      C

      SYMPTOM SIMULATION
      A

  5. DTC CHART


    NEXT

  6. CIRCUIT INSPECTION


    NEXT

  7. REPAIR


    NEXT

  8. CONFIRMATION TEST


    NEXT
    END

  9. HYDRAULIC TEST


    1. Perform hydraulic test Click here.


      NG

      REPAIR HYDRAULIC CIRCUIT
      OK

  10. PROBLEM SYMPTOMS TABLE


    NEXT

  11. CIRCUIT INSPECTION


    NEXT

  12. REPAIR


    NEXT

  13. CONFIRMATION TEST


    NEXT
    END