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Electrical Specification

G13228469Courtesy of SUBARU OF AMERICA, INC.
Terminal No. Contents Measuring condition Standard
(i88) No. 1 Mode door actuator #4 Digital signal; cannot be measured -
(i88) No. 2 Mode door actuator #3 Digital signal; cannot be measured -
(i88) No. 3 Mode door actuator #2 Digital signal; cannot be measured -
(i88) No. 4 Mode door actuator #1 Digital signal; cannot 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. 11 - - -
(i88) No. 12 (+) ←→ Chassis ground (-) Intake door potentiometer signal Ignition switch ON 0 - 5 V
(i88) No. 13 (+) ←→ Chassis ground (-) Pressure sensor (PD) Ignition switch ON 0.1 - 4.9 V
(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; cannot be measured -
(i88) No. 20 CAN Hi Digital signal; cannot be measured -
(i88) No. 21 Air mix door actuator LH #4(2) Digital signal; cannot be measured -
(i88) No. 22 Air mix door actuator LH #3(2) Digital signal; cannot be measured -
(i88) No. 23 Air mix door actuator LH #2(2) Digital signal; cannot be measured -
(i88) No. 24 Air mix door actuator LH #1(2) Digital signal; cannot be measured -
(i88) No. 25 Air mix door actuator #4(1) or air mix door actuator RH #4(2) Digital signal; cannot be measured -
(i88) No. 26 Air mix door actuator #3(1) or air mix door actuator RH #3(2) Digital signal; cannot be measured -
(i88) No. 27 Air mix door actuator #2(1) or air mix door actuator RH #2(2) Digital signal; cannot be measured -
(i88) No. 28 Air mix door actuator #1(1) or air mix door actuator RH #1(2) Digital signal; cannot 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 (+) ←→ Chassis ground (-) 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 (+) ←→ Chassis ground (-) Pressure sensor (PH) Ignition switch ON 0.1 - 4.9 V
(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