AIR CONDITIONING SYSTEM (for Manual Air Conditioning System) DATA LIST / ACTIVE TEST


  1. READ DATA LIST

    Tech Tips

    Using an intelligent tester to read the Data List allows the values or states of switches, sensor, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may by discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

    Note

    In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Air Conditioner / Data List.

    5. According to the display on tester, read the Data List.

      Air Conditioner
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Evaporator Temp Thermistor

      Evaporator fin thermistor /

      Min.: -29.7°C (-21.46°F)

      Max.: 59.55°C (139.19°F)

      		 Actual evaporator temperature is displayed -
      Evaporator Fin Thermistor

      Evaporator fin thermistor /

      Min.: -29.7°C (-21.46°F),

      Max.: 59.55°C (139.19°F)

      		 Actual evaporator temperature is displayed

      Open in circuit: -29.7°C (- 21.46°F)

      Short in circuit: 59.55°C (139.19°F)
      Evaporator Target Temp

      Evaporator target temperature /

      Min.: -327.68°C (-557.82°F)

      Max.: 327.67°C (621.81°F)

      		 Evaporator target temperature displayed -
      Engine Coolant Temp

      Engine coolant temperature /

      Min.: 1.3°C (34.34°F),

      Max.: 90.55°C (194.99°F)

      		 Actual engine coolant temperature is displayed while engine is warmed up -
      Regulator Pressure Sensor

      Regulator pressure sensor /

      Min.: 0.45668 MPaG

      Max.: 3.29437 MPaG

      		 Actual refrigerant pressure is displayed -
      Regulator Control Current

      Refrigerant control current /

      Min.: 0 A,

      Max.: 0.997 A

      		 Value changes between 0 A and 0.997 A in accordance with compressor and magnetic clutch operation -
      Electric Heater Count

      Number of electric heaters operating /

      Min.: 0, Max.: 3

      		 - -
      Flow Sensor

      Flow sensor /

      Min.: 0.0 V,

      Max.: 5.0 V

      		 Flow sensor voltage displayed

      Open circuit: 4.7 V or more

      Short circuit: 0.3 V or less
      Number of Trouble Codes

      Number of trouble codes /

      Min.: 0,

      Max.: 255

      		 Number of DTCs will be displayed -
      Combination Meter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Ambient Temperature

      Ambient temperature /

      Min.: -40°C (-40°F)

      Max.: 87.5°C (189.5°F)

      		 Actual ambient temperature is displayed -

  2. PERFORM ACTIVE TEST

    Tech Tips

    Using the intelligent tester to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Air Conditioner / Active Test.

    5. According to the display on tester, perform the Active Test.

      Air Conditioner
      Tester Display Test Part Control Range Normal Condition
      Magnetic Clutch Relay Magnetic clutch relay ON, OFF -
      Heater Active Level Heater level Min.: 0, Max.: 3 -