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Electrical Specification

Fig 1: Control Module I/O Signal Connector Terminals Arrangement
G06653020Courtesy of SUBARU OF AMERICA, INC.
Terminal No. Description Measuring conditions Standard
A1 Battery power supply Ignition switch: OFF Battery voltage
A2 Ignition power supply Ignition switch: ON Battery voltage
A3 ACC power supply Ignition switch: ACC Battery voltage
A4 CAN communication (Hi) Digital signal; can not be measured (1)
A5 CAN communication (Lo) Digital signal; can not be measured (1)
A6 Ground Always 0 V
A7 A/C control panel communication Digital signal; can not be measured (1)
A11 In-vehicle sensor Ignition switch: ON 25°C: Approx. 1.5 V
40°C: Approx. 1.0 V
A13 Flow sensor Ignition switch: ON 0.3 - 4.7 V
A14 Air mix door (driver's seat) position signal Ignition switch: ON, Air mix door: maximum cool position 4 V
Ignition switch: ON, Air mix door: maximum hot position 1 V
A16 Each potentiometer and sensor power supply Ignition switch: ON 5 V
A18 A/C control panel communication Digital signal; can not be measured (1)
A19 Pressure switch signal Ignition switch: ON Normal: ON
Abnormal: OFF
A21 After-evaporator sensor signal Ignition switch: ON, fluctuates depending on temperature after the evaporator. 1 - 4.5 V
A22 Pressure sensor Ignition switch: ON 0.5 - 4.9 V
A23 Sunload sensor Ignition switch: ON (0V: No sunload) 0 - 4.9 V
A24 Sunload sensor (with automatic light) Ignition switch: ON (0V: No sunload) 0 - 4.9 V
A25 Air mix door actuator (passenger's seat) position signal Ignition switch: ON, Air mix door: maximum cool position 4 V
Ignition switch: ON, Air mix door: maximum hot position 1 V
A26 Mode door actuator position signal Ignition switch: ON, Mode door: FACE position 4 V
Ignition switch: ON, Mode door: DEF position 1 V
B1 Sensor GND Always Less than 0.5 V B2
Variable compressor solenoid valve Ignition switch: ON, Blower switch: ON, A/C switch: ON 2 - 12 V
B3 Intake door actuator drive signal (FRESH) Intake door actuator operating on the FRESH side 0.7 V or less
B4 Air mix door actuator (passenger's seat) drive signal (HOT) Turning towards HOT side: B4 is 12 V, B16 is GND While operating: 12 V
While not operating: 0 V
B16 Air mix door actuator (passenger's seat) drive signal (COOL) Turning towards COOL side: B16 is 12 V, B4 is GND
B6 Intake door actuator drive signal (RECIRC) Intake door actuator operating on the RECIRC side 0.7 V or less
B8 Blower motor voltage feedback Ignition switch: ON, Blower switch: ON 0.45 - 10 V
B9 Blower motor control signal Ignition switch: ON, Blower switch: ON 9.05 V
B11 Mode servo drive signal (FACE) When turning towards FACE side: B11 is 12 V, B13 is GND While operating: 12 V
While not operating: 0 V
B13 Mode servo drive signal (DEF) When turning towards DEF side: B11 is GND, B13 is 12 V
B20 Heater main relay drive signal Ignition switch: ON, Blower switch: ON 0.7 V or less
B21 Air mix door actuator (driver's seat) drive signal (COOL) Turning towards COOL side: B21 is 12 V, B22 is GND While operating: 12 V
While not operating: 0 V
B22 Air mix door actuator (driver's seat) drive signal (HOT) Turning towards HOT side: B22 is 12 V, B21 is GND
(1) Battery voltage cannot be measured because of digital signal.