Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001CO0S
Model Year Start: 2019 Model: GR Corolla Prod Date Range: [06/2018 - 09/2022]
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model with Automatic Air Conditioning System): DATA LIST / ACTIVE TEST; 2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022]

DATA LIST / ACTIVE TEST

DATA LIST

NOTICE:

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.

HINT:

Using 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.

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus:

(1) for Air Conditioner: Body Electrical / Air Conditioner / Data List.

(2) for Engine: Powertrain / Engine / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Air Conditioner > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Room Temperature Sensor

Cooler (room temp. sensor) thermistor

Min.: -6.50°C (20.30°F)

Max.: 57.25°C (135.05°F)

Actual cabin temperature displayed

Cooler (room temp. sensor) thermistor circuit malfunction

  • When open circuit: -6.50°C (20.30°F)
  • When short circuit: 57.25°C (135.05°F)

Ambient Temp Sensor

Thermistor assembly

Min.: -23.30°C (-9.94°F)

Max.: 65.95°C (150.71°F)

Actual ambient temperature displayed

Thermistor assembly circuit malfunction

  • When open circuit: -23.30°C (-9.94°F)
  • When short circuit: 65.95°C (150.71°F)

Adjusted Ambient Temp

Adjusted ambient temperature

Min.: -30.80°C (-23.44°F)

Max.: 50.80°C (123.44°F)

Adjust ambient temperature displayed

Air conditioning amplifier assembly circuit malfunction

Evaporator Fin Thermistor

No. 1 cooler thermistor

Min.: -29.70°C (-21.46°F)

Max.: 59.55°C (139.19°F)

Actual evaporator temperature displayed

No. 1 cooler thermistor circuit malfunction

  • When open circuit: -29.70°C (-21.46°F)
  • When short 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

No. 1 cooler thermistor circuit malfunction

  • When open circuit: -327.68°C (-557.82°F)
  • When short circuit: 327.67°C (621.81°F)

Solar Sensor (D Side)

Automatic light control sensor

Min.: 0

Max.: 255

Automatic light control sensor value increases as brightness increases

Automatic light control sensor circuit malfunction

  • When open circuit: 0
  • When short circuit: 255

Engine Coolant Temp

Engine coolant temperature sensor

Min.: 1.30°C (34.34°F)

Max.: 90.55°C (194.99°F)

Actual engine coolant temperature displayed
  • SFI system malfunction
  • CAN communication system malfunction

Blower Motor Speed Level

Blower motor speed level

Min.: 0

Max.: 31

Displayed speed level increases in range between 0 and 31 as blower motor speed increases

Blower motor with fan sub-assembly circuit malfunction

Regulator Pressure Sensor

Air conditioner pressure sensor

Min.: -456.68 kPaG

Max.: 3294.37 kPaG

Actual refrigerant pressure displayed
  • Refrigerant line(gas leak etc.)
  • Air conditioner pressure sensor circuit malfunction

Regulator Control Current

Solenoid valve control current

Min.: 0 A

Max.: 0.997 A

Value changes between 0 A and 0.997 A in accordance with solenoid valve operation

-

Air Mix Servo Targ Pulse(D)

No. 1 air conditioning radiator damper servo sub-assembly target pulse

Min.: 128

Max.: 383
  • MAX COLD: 257 (pulse)
  • MAX HOT: 165 (pulse)

No. 1 air conditioning radiator damper servo sub-assembly circuit malfunction

Air Mix Servo Actual Pulse(D)

No. 1 air conditioning radiator damper servo sub-assembly actual pulse

Min.: 128

Max.: 383
  • MAX COLD: 257 (pulse)
  • MAX HOT: 165 (pulse)

No. 1 air conditioning radiator damper servo sub-assembly circuit malfunction

Air Mix Servo Targ Pulse(P)

No. 1 air conditioning radiator damper servo sub-assembly target pulse

Min.: 128

Max.: 383
  • MAX COLD: 255 (pulse)
  • MAX HOT: 347 (pulse)

No. 1 air conditioning radiator damper servo sub-assembly circuit malfunction*2

Air Mix Servo Actual Pulse(P)

No. 1 air conditioning radiator damper servo sub-assembly actual pulse

Min.: 128

Max.: 383
  • MAX COLD: 255 (pulse)
  • MAX HOT: 347 (pulse)

No. 1 air conditioning radiator damper servo sub-assembly circuit malfunction*2

Air Outlet Servo Pulse (D)

No. 1 air conditioning radiator damper servo sub-assembly target pulse

Min.: 128

Max.: 383
  • FACE: 256 (pulse)
  • FACE1: 256 (pulse)
  • FACE2: 256 (pulse)
  • B/L: 267 (pulse)
  • B/L2: 267 (pulse)
  • FOOT-R: 297 (pulse)
  • FOOT-M: 297 (pulse)
  • FOOT: 297 (pulse)
  • FOOT-D: 305 (pulse)
  • FOOT-0: 288 (pulse)
  • FOOT-F: 297 (pulse)
  • FOOT/DEF: 320 (pulse)
  • DEF: 348 (pulse)

No. 1 air conditioning radiator damper servo sub-assembly circuit malfunction

Air Outlet Servo Actu Pulse(D)

No. 1 air conditioning radiator damper servo sub-assembly actual pulse

Min.: 128

Max.: 383
  • FACE: 256 (pulse)
  • FACE1: 256 (pulse)
  • FACE2: 256 (pulse)
  • B/L: 267 (pulse)
  • B/L2: 267 (pulse)
  • FOOT-R: 297 (pulse)
  • FOOT-M: 297 (pulse)
  • FOOT: 297 (pulse)
  • FOOT-D: 305 (pulse)
  • FOOT-0: 288 (pulse)
  • FOOT-F: 297 (pulse)
  • FOOT/DEF: 320 (pulse)
  • DEF: 348 (pulse)

No. 1 air conditioning radiator damper servo sub-assembly circuit malfunction

Air Inlet Damper Targ Pulse

No. 1 blower damper servo sub-assembly target pulse

Min.: 128

Max.: 383
  • Recirculation: 256 (pulse)
  • Fresh: 220 (pulse)

No. 1 blower damper servo sub-assembly circuit malfunction

Air Inlet Damper Actual Pulse

No. 1 blower damper servo sub-assembly actual pulse

Min.: 128

Max.: 383
  • Recirculation: 256 (pulse)
  • Fresh: 220 (pulse)

No. 1 blower damper servo sub-assembly circuit malfunction

Shift Set Temperature

Shift set temperature

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

-

Compressor Mode

Compressor mode

Auto or Manual

Customized value displayed

-

Evaporator Control

Evaporator control

Auto or Manual

Customized value displayed

-

ECO MODE Cancel

Function to cancel ECO mode when set to ON

OFF or ON

Customized value displayed

-

Refrigerant Shortage Check

Refrigerant shortage check

ON or OFF

Customized value displayed

-

Fan speed increment control

Fan speed increment control

Slow, Normal or Fast

Customized value displayed

-

Foot/DEF Auto Mode

Foot/defroster auto mode

ON or OFF

Customized value displayed

-

Foot/DEF Auto Blow Up

Foot/defroster auto blower speed increase

ON or OFF

Customized value displayed

-

Ambient Temperature Shift

Ambient temperature shift

3C decr, 2C decr, 1C decr, Normal, 1C incr, 2C incr or 3C incr

Customized value displayed

-

A/C Cutoff Signal

A/C control cutoff signal

OFF or ON

The ECM sends the air conditioning control cutoff signal displayed

-

Refrigerant Gas Type

Refrigerant gas type

R134a or 1234yf

Refrigerant gas type displayed

-

Set Temperature (D Side)

Driver side set temperature

Min.: MAX COLD

Max.: MAX HOT

Driver side set temperature displayed

-

Set Temperature (P Side)

Front passenger side set temperature

Min.: MAX COLD

Max.: MAX HOT

Front passenger side set temperature displayed

*2

Outside Air Mode Auto Switch Function

Outside air mode auto switch function

ON or OFF

Customized value displayed

-

Number of Trouble Codes

Number of trouble codes

Min.: 0

Max.: 255

Number of DTCs displayed

-

Refrigerant High Pressure History

Refrigerant high pressure history

Min.: 0

Max.: 255

Number of times refrigerant high pressure history stored displayed

*1
  • *1: Refer to the following procedure to clear the refrigerant high pressure history.

    Click here 2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022]; HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model with Automatic Air Conditioning System): UTILITY

  • *2: for Dual Type

Powertrain > Engine > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Coolant Temperature

Engine coolant temperature

Min.: -40°C (-40°F)

Max.: 140°C (284°F)

75 to 100°C (167 to 212°F): After warming up

This is the engine coolant temperature.

HINT:

  • After warming up the engine, the engine coolant temperature will be 75 to 100°C (167 to 212°F).
  • After a long soak, the engine coolant temperature, intake air temperature and ambient air temperature will be approximately equal.
  • If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit is open or shorted.
  • Check if the engine overheats if the value indicated is higher than 135°C (275°F).

ACTIVE TEST

HINT:

Using the Techstream 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.

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Air Conditioner / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

Body Electrical > Air Conditioner > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Blower Motor

Blower motor with fan sub-assembly

Min.: 0

Max.: 31

-

Defogger Relay (Rear)

Rear window defogger

OFF or ON

-

Air Mix Servo Targ Pulse(D)

No. 1 air conditioning radiator damper servo sub-assembly pulse

Min.: 128

Max.: 383

Operates between 165 and 257 pulses

Air Mix Servo Targ Pulse(P)

No. 1 air conditioning radiator damper servo sub-assembly pulse

Min.: 128

Max.: 383

Operates between 255 and 347 pulses*

Air Outlet Servo Pulse (D)

No. 1 air conditioning radiator damper servo sub-assembly pulse

Min.: 128

Max.: 383

Operates between 256 and 348 pulses

Air Inlet Damper Targ Pulse

No. 1 blower damper servo sub-assembly pulse

Min.: 128

Max.: 383

Operates between 220 and 256 pulses
  • *: for Dual Type