HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS) > Auto A/C Control Module I/O Signal

ELECTRICAL SPECIFICATION

1. GASOLINE ENGINE MODEL

Terminal No.

Remarks

Measuring condition

Standard

1

Mode actuator #4

Actuator operating

8 V or more

2

Mode actuator #3

Actuator operating

8 V or more

3

Mode actuator #2

Actuator operating

8 V or more

4

Mode actuator #1

Actuator operating

8 V or more

6

Intake door actuator (FRESH)

FRESH mode

1 V or less

7

Intake door actuator (MIX)

MIX mode

1 V or less

8

Intake door actuator (RECIRC)

RECIRC mode

1 V or less

9

Blower fan ON signal

Blower fan is ON

1 V or less

11

A/C cut signal

A/C is cut off

1 V or less

14

GND for sensors

Always

1 V or less

15

ACC power supply

ACC ON

Battery voltage

16

Sunload sensor

Sunlight is contacting sensor

1 — 4 V

17

RECIRC sensor

Ignition switch ON

25°C: 2.5 V

18

Post evaporator sensor

Depends on temperature after the evaporator.

1 — 4.5 V

19

CAN Lo

Digital signal; can not be measured

—

20

CAN Hi

Digital signal; can not be measured

—

25

Air mix actuator #4

Air mix actuator is operating

8 V or more

26

Air mix actuator #3

Air mix actuator is operating

8 V or more

27

Air mix actuator #2

Air mix actuator is operating

8 V or more

28

Air mix actuator #1

Air mix actuator is operating

8 V or more

31

BATT

Always

Battery voltage

32

IGN

Ignition ON

Battery voltage

34

GND

Always

1 V or less

36

A/C ON signal

A/C is operating

8 V or more

35

ILL−

Illumination ON (measure between 37 — 35)

Battery voltage

37

ILL+

39

Rr defogger switch output

When the rear defogger switch is ON

1 V or less

40

Fan control signal

Ignition switch : ON, Blower switch : ON

8 V or more

2. DIESEL ENGINE MODEL

Terminal No.

Remarks

Measuring condition

Standard

1

Mode actuator #4

Actuator operating

8 V or more

2

Mode actuator #3

Actuator operating

8 V or more

3

Mode actuator #2

Actuator operating

8 V or more

4

Mode actuator #1

Actuator operating

8 V or more

5

PTC heater 2

PTC heater active

1 V or less

6

Intake door actuator (FRESH)

FRESH mode

1 V or less

7

Intake door actuator (MIX)

MIX mode

1 V or less

8

Intake door actuator (RECIRC)

RECIRC mode

1 V or less

9

Blower fan ON signal

Blower fan is ON

1 V or less

11

A/C cut signal

A/C is cut off

1 V or less

12

Mini PTC heater

PTC heater active

1 V or less

14

GND for sensors

Always

1 V or less

15

ACC power supply

ACC ON

Battery voltage

16

Sunload sensor

Sunlight is contacting sensor

1 — 4 V

17

RECIRC sensor

Ignition switch ON

25°C: 2.5 V

18

Post evaporator sensor

Depends on temperature after the evaporator.

1 — 4.5 V

19

CAN Lo

Digital signal; can not be measured

—

20

CAN Hi

Digital signal; can not be measured

—

25

Air mix actuator #4

Air mix actuator is operating

8 V or more

26

Air mix actuator #3

Air mix actuator is operating

8 V or more

27

Air mix actuator #2

Air mix actuator is operating

8 V or more

28

Air mix actuator #1

Air mix actuator is operating

8 V or more

29

PTC heater 1

PTC heater active

1 V or less

30

PTC heater 2

PTC heater active

1 V or less

31

BATT

Always

Battery voltage

32

IGN

Ignition ON

Battery voltage

33

Mini PTC heater

PTC heater active

1 V or less

34

GND

Always

1 V or less

35

ILL−

Illumination ON (measure between 37 — 35)

Battery voltage

37

ILL+

38

Compressor speed sensor signal

Compressor is running

Pulse output

39

Rr defogger switch output

When rear defogger relay is ON

Battery voltage

40

Fan control signal

Ignition switch : ON, Blower switch : ON

8 V or more