Air Conditioning System (For Automatic Air Conditioning System) Data List / Active Test

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

  1. Data List

  1. Active Test

Air Conditioning System (For Automatic Air Conditioning System) -- Data List / Active Test



Data List
Use the Techstream 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.

  1. Connect the Techstream to the DLC3.

  2. Turn the ignition switch to ON.

  3. Turn the Techstream on.

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

  5. Check the value(s) by referring to the table below.

    Air Conditioner
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Room Temperature Sensor
    (Room Temp)
    		Room temperature sensor / Min.: -6.5°C (20.3°F), Max.: 57.25°C (135.05°F)
    		Actual cabin temperature displayed
    		-
    Ambient Temp Sensor
    (Ambi Temp Sens)
    		Ambient temperature sensor / Min.: -23.3°C (-9.94°F), Max.: 65.95°C (150.71°F)
    		Actual ambient temperature displayed
    		-
    Adjusted Ambient Temp
    (Ambi Temp)
    		Adjusted ambient temperature / Min.: -30.8°C (-23.44°F), Max.: 50.8°C (123.44°F)
    		-
    		-
    Evaporator Fin Thermistor
    (Evap Fin Temp)
    		Evaporator fin temperature / Min.: -29.7°C (-21.46°F), Max.: 59.55°C (139.19°F)
    		Actual evaporator temperature displayed
    		-
    Solar Sensor (D side)
    (Solar Sens-D)
    		Driver side solar sensor / Min.: 0, Max.: 255
    		Driver side solar sensor value increases as brightness increases
    		-
    Engine Coolant Temp
    (Coolant Temp)
    		Engine coolant temperature / Min.: 1.3°C (34.34°F), Max.: 90.55°C (194.99°F)
    		Actual engine coolant temperature displayed while engine is warmed up
    		-
    Set Temperature (D side)
    (Set Temp-D)
    		Driver side set temperature / Min.: 18°C (65°F), Max.: 32°C (85°F)
    		Driver side set temperature displayed
    		-
    Blower Motor Speed Level
    (Blower Level)
    		Blower motor speed level / Min.: 0, Max.: 31
    		Increases in the range between 0 and 31 as the blower motor speed increases
    		-
    Regulator Pressure Sensor
    (Reg Press Sens)
    		Regulator pressure sensor / Min.: -0.45668 MPaG, Max.: 3.29437 MPaG
    		Actual refrigerant pressure displayed
    		-
    Regulator Control Current
    (Reg Ctrl Currnt)
    		Compressor variable output current / Min.: 0 A, Max.: 0.997 A
    		-
    		-
    Air Mix Servo Targ Pulse(D)
    (Air Mix Pulse-D)
    		Driver side air mix servo motor target pulse / Min.: 0, Max.: 255
    		MAX. COLD: 93 (pulse)
    MAX. HOT: 6 (pulse)
    		-
    Air Outlet Servo Pulse (D)
    (Air Out Pulse-D)
    		Driver side air outlet servo motor target pulse / Min.: 0, Max.: 255
    		FACE: 47 (pulse)
    B/L: 37 (pulse)
    FOOT: 17 (pulse)
    FOOT/DEF: 9 (pulse)
    DEF: 5 (pulse)
    		-
    Air Inlet Damper Targ Pulse
    (A/I Damp Targ Pls)
    		Air inlet damper target pulse / Min.: 0, Max.: 255
    1. RECIRCULATION: 19 (pulse)
    2. FRESH: 7 (pulse)
    		-
    Electric Heater Count*2
    (Heater Count)
    		Number of electric heaters operating / Min.: 0, Max.: 3
    		-
    		-
    Shift Set Temperature
    (Set Temp Shift)
    		Shift set temperature / 2 C incr, 1 C incr, Normal, 1 C decr, 2 C decr,
    		Customized value displayed
    		-
    Air Inlet Mode
    (Air Inlet Mode)
    		Air inlet mode / Auto or Normal
    		Customized value displayed
    		-
    Compressor/DEF Mode
    (Comprs/DEF Oper)
    		Compressor/DEF mode / Link or Normal
    		Customized value displayed
    		-
    Evaporator Control
    (Evap Ctrl)
    		Evaporator Control / Auto or Normal
    		Customized value displayed
    		-
    Foot/DEF Auto Blow Up
    (Auto blow Up)
    		Foot/DEF auto blow speed increase/ ON or OFF
    		Customized value displayed
    		-
    Foot/DEF Auto Mode
    (Foot/DEF Mode)
    		Foot/DEF auto mode / ON or OFF
    		Customized value displayed
    		-
    Flow Sensor*1
    (Flow Sens)
    		A/C flow sensor / Min.: 0 V, Max.: 5 V
    		A/C on, Blower switch HI: 0.7 to 3.8 V
    A/C off, Blower switch off: 3.8 to 4.2 V
    		A/C flow sensor is malfunctioning when a constant value below 0.7 V or higher than 4.2 V is displayed continuously for more than 4 seconds.
    A/C Cutoff Signal
    (A/C Cutoff)
    		A/C control cutoff signal / OFF or ON
    		A/C switch on: OFF
    A/C switch off: ON
    		-
    Number of Trouble Codes
    (#Codes)
    		Number of trouble codes / Min.: 0, Max.: 255
    		Number of DTCs will be displayed
    		-

    1. *1: for 2ZR-FE
    2. *2: w/ PTC Heater Assembly

Active Test
HINT:
Using the Techstream to perform Active Tests allows the relay actuator 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 Test early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Test.

  1. Connect the Techstream to the DLC3.

  2. Turn the ignition switch to ON.

  3. Turn the Techstream on.

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

  5. Check the operation by referring to the table below.

    Air Conditioner
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Blower Motor
    (Blower Motor)
    		Blower motor
    		Min.: 0, Max.: 31
    		-
    Magnetic Clutch Relay
    (A/C Mag Clutch)
    		A/C system operation
    		OFF, ON
    		-
    Defogger Relay (Rear)
    (Defogger Rly-R)
    		Defogger relay (Rear)
    		OFF, ON
    		-
    Heater Active Level*1
    (Heater Level)
    		Heater active level
    		Min.: 0, Max.: 3
    		-
    Air Mix Servo Targ Pulse(D)
    (Air Mix Pulse-D)
    		Driver side air mix servo motor pulse
    		Min.: 0, Max.: 255
    		-
    Air Outlet Servo Pulse (D)
    (Air Out Pulse-D)
    		Driver side air outlet servo motor pulse
    		Min.: 0, Max.: 255
    		-
    Air Inlet Damper Targ Pulse
    (A/I Damp Targ Pls)
    		Air inlet damper target pulse
    		Min.: 0, Max.: 255
    		-

    1. *1: w/ PTC Heater Assembly