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

  1. DATA LIST

    Tip:

    Using the intelligent tester to read the Data List allows the values or states of switches, sensors, 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 be 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.

      • Powertrain / Engine and ECT / Data List.

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

      Table 1. Air Conditioner

      Tester Display

      Measurement Item/Range

      Normal Condition

      Diagnostic Note

      Ambient Temp Sensor

      Ambient temperature sensor /

      Min.: -23.3°C (-9.94°F)

      Max.: 65.95°C (150.71°F)

      Actual ambient temperature displayed

      -

      Adjusted Ambient Temp

      Adjusted ambient temperature

      / Min.: -30.8°C (-23.44°F)

      Max.: 50.8°C (123.44°F)

      Adjusted ambient temperature displayed

      -

      Evaporator Fin Thermistor

      No. 1 cooler thermistor /

      Min.: -29.7°C (-21.46°F)

      Max.: 59.55°C (139.19°F)

      Actual evaporator temperature displayed

      -

      Evaporator Target Temp

      Target evaporator temperature /

      Min.: -327.68°C (-557.82°F)

      Max.: 327.67°C (621.81°F)

      Target evaporator 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 displayed

      -

      Regulator Pressure Sensor

      Refrigerant pressure sensor /

      Min.: -0.4566 MPa

      Max.: 3.2943 MPa

      Actual refrigerant pressure displayed

      -

      Regulator Control Current

      Compressor assembly with pulley / Min.: 0, Max.: 0.997

      Value changes between 0 A and 0.997 A in accordance with compressor assembly with pulley operation

      -

      Electric Heater Count

      Electric (PTC) heater count / Min.: 0, Max.: 3

      Actual number of the heater elements to be heated is displayed

      -

      Number of Trouble Codes

      Number of trouble codes / Min.: 0, Max.: 255

      Number of DTCs displayed

      -
      Table 2. Engine and ECT

      Tester Display

      Measurement Item/Range

      Normal Condition

      Diagnostic Note

      A/C Signal

      A/C signal / ON or OFF

      ON: A/C switch on

      OFF: A/C switch off

      -

  2. ACTIVE TEST

    Tip:

    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 the intelligent tester, perform the Active Test.

      Table 3. Air Conditioner

      Tester Display

      Test Part

      Control Range

      Diagnostic Note

      Heater Active Level*

      Heater level

      Min.: 0, Max.: 3

      -

      Magnetic Clutch Relay

      Magnet clutch relay operation

      ON or OFF

      -

      • *: w/ PTC Heater