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

ELECTRICAL SPECIFICATION

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

10

Rr defogger operating signal input

Rr defogger is operating

10 V or more

11

A/C cut-off 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

4.5 V

17

RECIRC sensor

Ignition switch ON

25°C: 1 — 5 V

18

Post evaporator sensor

Depends on temperature after the evaporator.

1 — 4.5 V

19

CAN Lo

Cannot be measured because it is a digital signal.

—

20

CAN Hi

Cannot be measured because it is a digital signal.

—

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

Rear defogger relay is ON

Battery voltage

40

Fan control signal

Ignition switch : ON, Blower switch : ON

8 V or more