Air Conditioning System (For Automatic Air Conditioning System) How To Proceed With Troubleshooting

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Heating Air Conditioning. Land Cruiser. Urj200, 202 Grj200 Vdj200

  1. VEHICLE BROUGHT TO WORKSHOP

  2. INSPECT BATTERY VOLTAGE

  3. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

  4. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

  5. CHECK FOR DTC*

  6. PROBLEM SYMPTOMS TABLE

  7. OVERALL ANALYSIS AND TROUBLESHOOTING*

  8. ADJUST, REPAIR OR REPLACE

  9. CONFIRMATION TEST

Air Conditioning System (For Automatic Air Conditioning System) -- How To Proceed With Troubleshooting


HINT:
  1. Use these procedures to troubleshoot the air conditioning system.
  2. *: 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, recharge or replace the battery before proceeding.

    NEXT


    3.CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

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

      1. for LHD: Click here.
      2. for RHD: Click here.
      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 COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

    1. Use the intelligent tester to check if the LIN communication system is functioning normally (Click here).

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



    		B.
    GO TO LIN COMMUNICATION SYSTEM (Click here)
    A


    5.CHECK FOR DTC*

    1. Check for DTCs (Click here).

    2. Clear the DTC (Click here).

    3. Based on the DTCs output above, try to force output of the air conditioning system DTC by simulating the conditions indicated by the DTC. Then recheck for DTCs.

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



    		B.
    GO TO DTC 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.
    GO TO STEP 8
    A


    7.OVERALL ANALYSIS AND TROUBLESHOOTING*

    1. Terminals of ECU (Click here)

    2. Data List/Active Test (Click here)

    3. Actuator Check (Click here)

    4. On-vehicle Inspection

    5. Inspection


    NEXT


    8.ADJUST, REPAIR OR REPLACE

      NEXT


      9.CONFIRMATION TEST

        NEXT

        END