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

Vehicle Interior. Corolla. Zre142 Aze141
Heating Air Conditioning. Corolla. Zre142 Aze141

  1. VEHICLE BROUGHT TO WORKSHOP

  2. INSPECT BATTERY VOLTAGE

  3. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

  4. CHECK FOR DTC*

  5. PROBLEM SYMPTOMS TABLE

  6. OVERALL ANALYSIS AND TROUBLESHOOTING*

  7. ADJUST, REPAIR OR REPLACE

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


HINT:
  1. Use the following procedures to troubleshoot the air conditioning system.
  2. *: Use the Techstream.


1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.INSPECT BATTERY VOLTAGE

    1. Inspect the 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 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
    A


    4.CHECK FOR DTC*

    1. Check for DTCs and note any codes that are output.

      HINT:
      Refer to DTC Check / Clear (Link).

    2. Clear the DTCs.

    3. Recheck for DTCs. Based on the DTCs output above, try to force the A/C system to output DTCs by simulating the conditions indicated by the DTCs.

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


    		B.
    Go to step 7
    A


    5.PROBLEM SYMPTOMS TABLE

    1. Refer to Problem Symptoms Table (COROLLA_ZRE142 RM000001M2W05PX.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 7
    A


    6.OVERALL ANALYSIS AND TROUBLESHOOTING*

    1. Data List / Active Test (COROLLA_ZRE142 RM000000PMG058X.html)

    2. Terminals of ECU (COROLLA_ZRE142 RM0000026DR069X.html)

    3. On-vehicle Inspection

    4. Inspection


    NEXT


    7.ADJUST, REPAIR OR REPLACE

      NEXT

      END