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Electrical Specification

Fig 1: Identifying Auto A/C Control Module Connector Terminals
G05003876Courtesy of SUBARU OF AMERICA, INC.
AUTO A/C CONTROL MODULE CONNECTOR TERMINALS SPECIFICATION CHART

Terminal No. Remarks Measuring condition Standard
A1 Battery power supply Ignition switch: OFF Battery voltage
A2 ACC power supply Ignition switch: ACC Battery voltage
A3 Mode door actuator position signal Mode door: FACE position 4V
Mode door: DEF position 1 V
A4 Passenger's side air mix door actuator position signal Air mix door: Maximum cool position 4V
Air mix door: Maximum hot position 1 V
A5 In-vehicle sensor Ignition switch: ON 5 V or less
A6 Sunload sensor Ignition switch: ON, With Sunload (No sunload: 0 V) 3V
A8 Sensor power supply Ignition switch: ON 5V
A9 Ignition power supply Ignition switch: ON Battery voltage
A10 A/C cut signal Ignition switch: ON Battery voltage
When pressure SW is operating 0V
A12 Driver's side air mix door actuator position signal Air mix door: Maximum cool position 4V
Air mix door: Maximum hot position 1 V
A13 Evaporator sensor Ignition switch: ON 5 V or less
A14, A16 Ground Continuity to chassis ground 0 Ω
A15 Sensor ground Continuity to chassis ground 0 Ω
B1, B11 Ambient sensor, engine coolant temperature sensor - (1)
B2 Blower motor control Ignition switch : ON, Blower switch : ON 0.45 V
B3 Blower motor control Ignition switch : ON, Blower switch : ON 9.05 V
B4 RAM monitor - (1)
B5 RAM monitor - (1)
B6 A/C ON signal A/C: ON (A/C OFF: 0 V) 7 - 14V
B7 Mode door actuator power supply When switching mode door from DEF → FACE Battery voltage
B17 When switching mode door from FACE → DEF Battery voltage
B8 Passenger's side air mix door actuator power supply When switching air mix door from HOT → COOL Battery voltage
B18 When switching air mix door from COOL → HOT Battery voltage
B9 Driver's side air mix door actuator power supply When switching air mix door from HOT → COOL Battery voltage
B19 When switching air mix door from COOL → HOT Battery voltage
B10 Intake door actuator FRESH (RECIRC: Battery voltage) 0V
B20 RECIRC (FRESH: Battery voltage) 0V
B13 Blower fan ON signal When blower fan is rotating (Not rotating: Battery voltage) 0V
B14 RAM monitor - (1)
B15, B16 Control panel - (1)
(1) Unable to measure the voltage for digital signal.
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