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


  1. DATA LIST

    Tech Tips

    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:


      1. for Air conditioning Amplifier:

        Body / Air Conditioner / Data List

      2. for Combination Meter:

        Body / Combination Meter / Data List

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

      Air Conditioner
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Room Temperature Sensor

      Room temperature sensor /

      Min.: -6.5°C (20.3°F)

      Max.: 57.25°C (135.1°F)

      Actual room temperature is displayed -
      Ambient Temp Sensor

      Ambient temperature sensor /

      Min.: -23.3°C (-9.94°F)

      Max.: 65.95°C (150.71°F)

      Actual ambient temperature is displayed -
      Adjusted Ambient Temp

      Adjusted ambient temperature /

      Min.: -30.8°C (-23.44°F)

      Max.: 50.8°C (123.44°F)

      - -
      Evaporator Fin Thermistor

      Evaporator temperature sensor /

      Min.: -29.7°C (-21.46°F)

      Max.: 59.55°C (139.19°F)

      Actual evaporator temperature displayed

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

      Short in the circuit: 59.55°C (139.19°F).

      Evaporator Target Temp

      Target evaporator temperature /

      Min.: -327.68°C (-557.82°F)

      Max.: 327.67°C (621.81°F)

      Target evaporator temperature displayed -
      Solar Sensor (D side)

      Driver side solar sensor /

      Min.: 0

      Max.: 255

      Driver side solar sensor value increases as brightness increases -
      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 after engine warmed up -
      Set Temperature (D side)

      Driver side set temperature /

      Min.: MAX COLD

      Max.: MAX HOT

      Driver side actual set temperature is displayed -
      Set Temperature (P side)

      Front passenger side set temperature /

      Min.: MAX COLD

      Max.: MAX HOT

      Front passenger side actual set temperature is displayed -
      Blower Motor Speed Level

      Blower motor speed level /

      Min.: 0

      Max.: 31

      Increases from 0 to 31 as blower motor speed increases -
      Regulator Pressure Sensor

      Regulator pressure sensor /

      Min.: -0.4566 MPaG

      Max.: 3.2943 MPaG

      Actual regulator pressure is displayed -
      Regulator Control Current

      Regulator control current /

      Min.: 0 A

      Max.: 0.997 A

      Value changes between 0.12 A and 0.997 A in accordance with compressor and magnetic clutch operation -
      Air Mix Servo Targ Pulse (D)

      Air mix servo motor target pulse (driver side) /

      Min.: 0

      Max.: 255


      • MAX COOL: 4 (pulse)

      • MAX HOT: 93 (pulse)

      -
      Air Mix Servo Actual Pulse (D)

      Air mix servo motor actual pulse (driver side) /

      Min.: 0

      Max.: 255

      Follows the target pulse -
      Air Mix Servo Targ Pulse (P)

      Air mix servo motor target pulse (front passenger side) /

      Min.: 0

      Max.: 255


      • MAX COOL: 4 (pulse)

      • MAX HOT: 93 (pulse)

      -
      Air Mix Servo Actual Pulse (P)

      Air mix servo motor actual pulse (front passenger side) /

      Min.: 0

      Max.: 255

      Follows the target pulse -
      Air Outlet Servo Pulse (D)

      Air outlet servo motor target pulse /

      Min.: 0

      Max.: 255


      • FACE: 101 (pulse)

      • B/L: 74 (pulse)

      • FOOT: 53 or 62 (pulse)

      • FOOT / DEF: 35 (pulse)

      • DEF: 9 (pulse)

      -
      Air Outlet Servo Actu Pulse (D)

      Air outlet servo motor actual pulse /

      Min.: 0

      Max.: 255

      Follows the target pulse -
      Air Inlet Damper Targ Pulse

      Air inlet servo motor target pulse /

      Min.: 0

      Max.: 255


      • Recirculation: 6 (pulse)

      • Fresh: 22 (pulse)

      -
      Air Inlet Damper Actual Pulse

      Air inlet servo motor actual pulse /

      Min.: 0

      Max.: 255

      Follows the target pulse -
      Electric Heater Count*1

      Target number of electric heaters operating /

      Min.: 0

      Max.: 3

      - -
      Electric Heater Active Level*1

      Number of electric heaters operating /

      Min.: 0

      Max.: 3

      Follows the target number -
      Shift Set Temperature

      Set temperature shift /

      2C decr, 1C decr, Normal, 1C incr or 2C incr

      Customized value displayed -
      Air Inlet Mode

      Air inlet mode /

      Auto or Manual

      Customized value displayed -
      Evaporator Control

      Evaporator Control /

      Auto or Manual

      Customized value displayed -
      Refrigerant Shortage Check

      Refrigerant shortage check function /

      ON or OFF

      Customized value displayed -
      Fan Speed Increment Control

      Blower motor speed increment level to target speed /

      Fast, Normal or Slow

      Customized value displayed -
      Foot/DEF Auto Mode

      Foot / DEF auto mode /

      ON or OFF

      Customized value displayed -
      Foot/DEF Auto Blow Up

      Foot / DEF automatic blow up function /

      ON or OFF

      Customized value displayed -
      Pls Servo Test Sts Pulse servo motor test status / Wait, Move, Comp, Error or Stop Pulse servo motor test status -
      A/C Cutoff Signal

      A/C control cutoff signal /

      ON or OFF

      - -
      Number of Trouble Codes

      Number of trouble codes /

      Min.: 0

      Max.: 255

      Number of DTCs displayed -

      *1: w/ PTC Heater

      Combination Meter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Ambient Temperature

      Ambient temperature sensor /

      Min.: -40°C (-40°F)

      Max.: 87.5°C (189.5°F)

      Actual ambient temperature is displayed -
  2. 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: Air Conditioner: Body / Air Conditioner / Active Test.

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

      Air Conditioner
      Tester Display Test Part Control Range Diagnostic Note
      Blower Motor Blower motor Min.: 0, Max.: 31 -
      Magnetic Clutch Relay A/C Compressor OFF or ON -
      Defogger Relay (Rear) Defogger relay (Rear) OFF or ON -
      Heater Active Level*1 Heater level Min.: 0, Max.: 3 -
      Air Mix Servo Targ Pulse (D) Air mix servo motor pulse (driver side) Min.: 0, Max.: 255 Perform Active Test when value between 4 and 93 displayed
      Air Mix Servo Targ Pulse (P) Air mix servo motor pulse (front passenger side) Min.: 0, Max.: 255 Perform Active Test when value between 4 and 93 displayed
      Air Outlet Servo Pulse (D) Air outlet servo motor pulse Min.: 0, Max.: 255 Perform Active Test when value between 9 and 101 displayed
      Air Inlet Damper Targ Pulse Air inlet damper target pulse Min.: 0, Max.: 255 Perform Active Test when value between 6 and 22 displayed

      *1: w/ PTC Heater