Electrical Specification

WARNING: This page is about a different car, the 2011 Subaru Tribeca. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Auto A/C Control Module Connector Terminals

Courtesy of SUBARU OF AMERICA, INC.

AUTO A/C CONTROL MODULE CONNECTOR TERMINALS REFERENCE

Terminal No.

Description

Measuring condition

Specification

Battery power supply

Ignition switch: OFF

Battery voltage

ACC power supply

Ignition switch: ACC

Battery voltage

Mode door actuator position signal

Mode door: FACE position

Mode door: DEF position

1 V

Passenger's side air mix door actuator position signal

Air mix door: Maximum cool position

Air mix door: Maximum hot position

1 V

In-vehicle sensor

Ignition switch: ON

Less than 5 V

Sunload sensor

Ignition switch: ON, With Sunload (No sunload: 0.8 V)

Driver's seat heater temperature sensor

Ignition switch: ON

Less than 5 V

Sensor power supply

Ignition switch: ON

Ignition power supply

Ignition switch: ON

Battery voltage

A10

A/C cut signal

Ignition switch: ON

Battery voltage

When pressure SW is operating

0 V

A12

Driver's side air mix door actuator position signal

Air mix door: Maximum cool position

Air mix door: Maximum hot position

1 V

A13

Evaporator sensor

Ignition switch: ON

Less than 5 V

A14

Passenger's seat heater temperature sensor

Ignition switch: ON

Less than 5 V

A15

Sensor ground

Continuity to chassis ground

0 Ω

A16

Ground

Continuity to chassis ground

0 Ω

CAN communication (HI side)

Ignition switch: ON

Pulse signal ⁽¹⁾

Blower motor voltage feedback signal

Blower level: Manual Lo

7.6 V

Blower level: Manual M3

3.7 V

Blower level: Manual Hi

Less than 1 V

Blower motor power MOS gate control signal

Ignition switch : ON, Blower switch : ON

1 V - battery voltage

Magnet clutch signal

Temperature setting: Maximum COOL, MODE: Manual DEF, A/C: ON

Battery voltage

Mode door actuator power supply (FACE)

When switching mode door from DEF → FACE

Battery voltage - 2.5 V or more ⁽²⁾

When switching mode door from FACE → DEF

1 V or less ⁽²⁾

Passenger's side air mix door actuator power supply (COOL side)

When switching air mix door from HOT → COOL

Battery voltage - 2.5 V or more ⁽²⁾

When switching air mix door from COOL → HOT

Less than 1 V ⁽²⁾

Driver's side air mix door actuator power supply (COOL side)

When switching air mix door from HOT → COOL

Battery voltage - 2.5 V or more ⁽²⁾

When switching air mix door from COOL → HOT

Less than 1 V ⁽²⁾

B10

Inlet opening motor (FRESH side)

FRESH

Less than 1 V

RECIRC

Battery voltage

B11

Driver's seat heater

Driver's seat heater: ON (3 stages)

Less than 1 V ⁽³⁾

B13

Passenger's seat heater

Passenger's seat heater: ON (3 stages)

Less than 1 V ⁽³⁾

B14

CAN communication (Lo side)

Ignition switch: ON

Pulse signal ⁽¹⁾

B16

Blower motor relay

Blower motor: When stopped

Battery voltage

Blower motor: During operation

Less than 1 V

B18

Panel communication (transmitter side)

Ignition switch: ON

Pulse signal ⁽¹⁾

B19

Panel communication (receiver side)

Ignition switch: ON

Pulse signal ⁽¹⁾

B20

Mode door (DEF) side

Mode: DEF ==> FACE

Less than 1 V

Mode: FACE ==> DEF

Battery voltage - 2.5 V or more

B21

Passenger's side air mix door

Air mix: Maximum HOT ==> maximum COOL

Less than 1 V

Air mix: Maximum COOL ==> maximum HOT

Battery voltage - 2.5 V or more

B22

Driver's side air mix door

Air mix: Maximum HOT ==> maximum COOL

Less than 1 V

Air mix: Maximum COOL ==> maximum HOT

Battery voltage - 2.5 V or more

B23

Inlet opening motor (RECIRC side)

RECIRC

Less than 1 V

FRESH

Battery voltage

B24

Driver's seat heater ground

Continuity to chassis ground

0 Ω

B26

Passenger's seat heater ground

Continuity to chassis ground

⁽¹⁾	Unable to measure the voltage for digital signal.

⁽²⁾	The mode door and air mix door values are values immediately after switching operation of FACE ↔ DEF, and after switching between max cooling ↔ max heating, respectively (value during damper door movement)

⁽³⁾	The seat heater value shows the value immediately after operation. (If the target value is reached, an ON/OFF operation will occur, so the measurement should be taken just after seat heater ON.)