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

  1. VEHICLE BROUGHT TO WORKSHOP

  2. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK

  3. INSPECT BATTERY VOLTAGE

  4. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

  5. CHECK PANEL DIAGNOSIS

  6. CHECK FOR DTC*

  7. PROBLEM SYMPTOMS TABLE

  8. OVERALL ANALYSIS AND TROUBLESHOOTING*

  9. ADJUST, REPAIR OR REPLACE

  10. 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.CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK

      NEXT


      3.INSPECT BATTERY VOLTAGE

      1. Measure the voltage of the battery.

        Standard voltage:
        11 to 14 V
        If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

      NEXT


      4.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 with Entry and Start System)
        		B
        CAN DTC is output (for LHD without Entry and Start System)
        		C
        CAN DTC is output (for RHD with Entry and Start System)
        		D
        CAN DTC is output (for RHD without Entry and Start System)
        		E



      		B.
      Go to CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0C5X.html)

      		C.
      Go to CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0BYX.html)

      		D.
      Go to CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0BZX.html)

      		E.
      Go to CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0C0X.html)
      A


      5.CHECK PANEL DIAGNOSIS

      1. Check panel diagnosis (LandCruiser RM000002LLA03VX.html).

        1. Indicator Check

        2. Sensor Check


      NEXT


      6.CHECK FOR DTC*

      1. Check for DTCs and note any codes that are output (LandCruiser RM000002LIT049X.html).

      2. Clear the DTCs (LandCruiser RM000002LIT049X.html).

      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 DIAGNOSTIC TROUBLE CODE CHART (LandCruiser RM000002LIN06CX.html)
      A


      7.PROBLEM SYMPTOMS TABLE

      1. Refer to Problem Symptoms Table (LandCruiser RM0000045E302NX.html).

        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 9
      A


      8.OVERALL ANALYSIS AND TROUBLESHOOTING*

      1. Terminals of ECU (LandCruiser RM000002LIP05UX.html)

      2. Data List / Active Test (LandCruiser RM000002LIV040X.html)

      3. On-vehicle Inspection

      4. Inspection


      NEXT


      9.ADJUST, REPAIR OR REPLACE

        NEXT


        10.CONFIRMATION TEST

          NEXT

          END