Electrical Specification

Courtesy of SUBARU OF AMERICA, INC.

Terminal No.

Contents

Measuring condition

Standard

(i88) No. 1

Mode door actuator #4

Digital signal; can not be measured

(i88) No. 2

Mode door actuator #3

Digital signal; can not be measured

(i88) No. 3

Mode door actuator #2

Digital signal; can not be measured

(i88) No. 4

Mode door actuator #1

Digital signal; can not be measured

(i88) No. 5- - -

(i88) No. 6 (+) ↔ (i88) No. 8 (-)

Intake door actuator drive signal (FRESH)

FRESH mode

8 V or more

(i88) No. 7 (+) ↔ Chassis ground (-)

Hazard switch

Hazard switch: ON

Switch OFF: Battery voltage Switch ON: 0 V

(i88) No. 8 (+) ↔ (i88) No. 6 (-)

Intake door actuator (RECIRC)

RECIRC mode

8 V or more

(i88) No. 9 (+) ↔ Chassis ground (-)

Blower fan ON signal

Blower fan is ON

1 V or less

(i88) No. 10 (+) ↔ Chassis ground (-)

5 V power supply

Ignition switch ON

5 V

(i88) No. 1

(i88) No. 12 (+) ↔ Chassis ground (-)

Intake door potentiometer signal

Ignition switch ON

0 - 5 V

(i88) No. 13

Pressure sensor (PD)

(i88) No. 14 (+) ↔ Chassis ground (-)

GND for sensors

Always

1 V or less

(i88) No. 15 (+) ↔ Chassis ground (-)

ACC power supply

ACC ON

Battery voltage

(i88) No. 16 (+) ↔ Chassis ground (-)

Sunload sensor

Sunlight is contacting sensor

1 - 4 V

(i88) No. 17 (+) ↔ Chassis ground (-)

In-vehicle sensor

Ignition switch ON

25°C: 2.5 V

(i88) No. 18 (+) ↔ Chassis ground (-)

Post evaporator sensor

Depends on temperature after the evaporator.

1 - 4.5 V

(i88) No. 19

CAN Lo

Digital signal; can not be measured

(i88) No. 20

CAN Hi

Digital signal; can not be measured

(i88) No. 21

Air mix door actuator LH #4⁽²⁾

Digital signal; can not be measured

(i88) No. 22

Air mix door actuator LH #3⁽²⁾

Digital signal; can not be measured

(i88) No. 23

Air mix door actuator LH #2⁽²⁾

Digital signal; can not be measured

(i88) No. 24

Air mix door actuator LH #1⁽²⁾

Digital signal; can not be measured

(i88) No. 25

Air mix door actuator #4⁽¹⁾ or air mix door actuator RH #4⁽²⁾

Digital signal; can not be measured

(i88) No. 26

Air mix door actuator #3⁽¹⁾ or air mix door actuator RH #3⁽²⁾

Digital signal; can not be measured

(i88) No. 27

Air mix door actuator #2⁽¹⁾ or air mix door actuator RH #2⁽²⁾

Digital signal; can not be measured

(i88) No. 28

Air mix door actuator #1⁽¹⁾ or air mix door actuator RH #1⁽²⁾

Digital signal; can not be measured

(i88) No. 29

(i88) No. 30

(i88) No. 31 (+) ↔ Chassis ground (-)

Battery power supply

Always

Battery voltage

(i88) No. 32 (+) ↔ Chassis ground (-)

Ignition power supply

Ignition ON

Battery voltage

(i88) No. 33

Humidity sensor

Ignition switch ON (Fluctuates depending on temperature of the vehicle interior.)

1 - 4.5 V

(i88) No. 34 (+) ↔ Chassis ground (-)

GND

Always

1 V or less

(i88) No. 35

Illumination power supply (-)

Illumination ON (measured between (i88) No. 37 (+) ↔ (i88) No. 35(-))

Battery voltage

(i88) No. 36 (+) ↔ Chassis ground (-)

Variable compressor solenoid valve drive signal

Ignition switch ON Blower switch ON A/C switch ON

2 V - 12 V

(i88) No. 37 (+) ↔ (i88) No. 35 (-)

Illumination power supply (+)

Illumination ON

Battery voltage

(i88) No. 38

Pressure sensor (PH)

(i88) No. 39 (+) ↔ Chassis ground (-)

Heater core sensor

Ignition switch ON (Fluctuates depending on temperature after the heater core.)

0.5 - 4.0 V

(i88) No. 40 (+) ↔ Chassis ground (-)

Fan control signal

Ignition switch: ON, Blower switch: ON

1st gear: Approx. 10.0 V

2nd gear: Approx. 9.0 V

3rd gear: Approx. 8.0 V

4th gear: Approx. 7.0 V

5th gear: Approx. 6.0 V

6th gear: Approx. 4.5 V

7th gear: Approx. 2.0 V

⁽¹⁾	Without left/right independent air conditioning function

⁽²⁾	With left/right independent air conditioning function