Electrical Specification

Fig 1: Identifying Body Control Module Connector Terminals

Courtesy of SUBARU OF AMERICA, INC.

Description

Terminal No.

Signal (V or Ω)

Note

Ignition switch ON (engine OFF)

Ignition power supply (rear wiper)

A5 ←→ Chassis ground

Less than 1.5 V →10 -13 V

Ignition ON

Battery power supply (shift lock/key lock)

B6 ←→ Chassis ground

10 - 13 V

Always

Battery power supply (door lock)

D1 ←→ Chassis ground

10 - 13 V

Always

Battery power supply (control)

C6←→ Chassis ground

10 - 13 V

Always

Ground

A1 ←→ Chassis ground

Less than 1.5 V

Always

C1 ←→ Chassis ground

Battery power supply (back-up)

B7 ←→ Chassis ground

10 - 13 V

Always

Ignition power supply

B3 ←→ Chassis ground

Less than 1.5 V →10 -13 V

Ignition ON

ACC power supply

A32←→ Chassis ground

Less than 1.5 V →10 -13 V

ACC ON

Key-in switch

A4 ←→ Chassis ground

Less than 1.5 V → 10 - 13 V

When key is inserted (model without the keyless access with push button start)

ACC input

ACC ON (model with the keyless access with push button start)

P range SW

B18 ←→ Chassis ground

8 V or more → less than 1.5 V

Shift lever shifted from P range to other than P range

Stop light SW

A10 ←→ Chassis ground

Less than 1.5 V → 8 V or more

Stop light switch OFF → ON

Door SW (driver's)

C14 ←→ Chassis ground

8 V or more → less than 1.5 V

With driver's door closed → opened

Door SW (passenger's)

C13 ←→ Chassis ground

8 V or more → less than 1.5 V

With passenger's door closed → opened

Door SW (rear right)

C25 ←→ Chassis ground

8 V or more → less than 1.5 V

Rear right door closed → open

Door SW (rear left)

C24 ←→ Chassis ground

8 V or more → less than 1.5 V

Rear left door closed → open

Rear gate/trunk SW

C33 ←→ Chassis ground

8 V or more → less than 1.5 V

Rear gate/trunk closed → open

Opener SW (trunk/rear gate)

C10 ←→ Chassis ground

8 V or more → less than 1.5 V

Rear gate/trunk opener switch ON

Manual switch (LOCK)

C9 ←→ Chassis ground

8 V or more → less than 1.5 V

Door lock switch ON

Manual switch (UNLOCK)

C20 ←→ Chassis ground

8 V or more → less than 1.5 V

Door unlock switch ON

Door lock state SW driver's

C12 ←→ Chassis ground

8 V or more → less than 1.5 V

Driver's inner remote lock → unlock

Door lock state SW passenger's

C23 ←→ Chassis ground

8 V or more → less than 1.5 V

Passenger's inner remote lock → unlock

Lighting AUTO SW

B16 ←→ Chassis ground

8 V or more → less than 1.5 V

Switch at AUTO position

Lighting II SW

A34 ←→ Chassis ground B34 ←→ Chassis ground

8 V or more → less than 1.5 V

Switch at II position

Lighting I SW

B17 ←→ Chassis ground

8 V or more ←→ less than 1.5 V

Switch at I position

Dimmer passing SW

B25 ←→ Chassis ground

8 V or more ←→ less than 1.5 V

Switch at passing position

Dimmer Hi beam SW

B15 ←→ Chassis ground

8 V or more ←→ less than 1.5 V

Switch at Hi beam position

Front fog light SW

B26 ←→ Chassis ground

8 V or more -+ less than 1.5 V

Front fog light switch ON

Illumination sensor power supply

B1 ←→ A29

Less than 1.5 V → 4.5 V or more

Ignition switch OFF -+ ON

Illumination sensor signal

A19

0.2 - 4.5 V

Ignition switch OFF → ON

Ground (illumination sensor)

A29 ←→ Chassis ground

Less than 1.5 V

Always

Rear wiper SW ON

A12 ←→ Chassis ground

8 V or more → less than 1.5 V

Switch at ON position

Rear wiper SW INT

A22 ←→ Chassis ground

8 V or more → less than 1.5 V

Switch at INT position

Rear washer SW

A30 ←→ Chassis ground

8 V or more → less than 1.5V

Switch at ON position

Illumination SW (Vi1)

D12 ←→ Chassis ground

Approx. 5 V

While clearance light illuminates

Illumination SW (Vi2)

D22 ←→ Chassis ground

0.5 - 4.8 V

Illumination SW (Vi3)

D28 ←→ Chassis ground

Less than 1.5 V

Always

Bright SW

C21 ←→ Chassis ground

8 V or more → less than 1.5 V

Switch at ON position

Reverse SW (MT)

B12 ←→ Chassis ground

Less than 1.5 V → 8 V or more

Reverse SW ON

Hi-speed CAN communication circuit 1 (Hi)

B20

Serial communication

Except for sleep status

Hi-speed CAN communication circuit 1 (Lo)

B28

⁽¹⁾

Hi-speed CAN communication circuit 2 (Hi)

C27

Serial communication

Except for sleep status

Hi-speed CAN communication circuit 2 (Lo)

C35

⁽¹⁾

LIN circuit

D16

Serial communication

Except for sleep status ⁽¹⁾

X mode switch

B14 ←→ Chassis ground

8 V or more → less than 1.5 V

X mode switch ON

TPMS/keyless entry communication circuit

D11

Serial communication

When door lock/unlock is operated with the keyless transmitter

Immobilizer antenna (B)

B22

Serial communication

Communication with ignition key in progress

Immobilizer antenna (A)

B10

Serial communication

Immobilizer antenna amplifier GND

B30 ←→ B2

Less than 1.5 V

Always

Immobilizer antenna amplifier power supply

B2 ←→ B30

4.5 V - 5.5 V

Communication with ignition key in progress

Security UART

A21

Serial communication

Always

Shift lock solenoid

B5 ←→ Chassis ground

Less than 1.0 V → 9 V or more

When shift lock is operating (AT)

Key lock solenoid

B4 ←→ Chassis ground

Less than 1.0 V → 9 V or more

LOCK status is ON (AT model without the keyless access with push button start)

⁽²⁾

Rear wiper ON output

A7 ←→ Chassis ground

Less than 1.0 V → 9 V or more

Rear wiper operation in progress

Rear wiper return output

A6 ←→ Chassis ground

Less than 1.0 V → 9 V or more

Wiper reversed operation in progress

Door LOCK output

D2 ←→ Chassis ground

Less than 1.0 V → 9 V or more

When LOCK signal is output

Door UNLOCK output

D3 ←→ Chassis ground

Less than 1.0 V → 9 V or more

When UNLOCK signal is output

Door lock UNLOCK (driver's seat) output

D4 ←→ Chassis ground

Less than 0.5 V → 8 V or more

When driver's side door lock is output

Rear gate/trunk UNLOCK output

D7 ←→ Chassis ground

Less than 1.0 V → 9 V or more

When UNLOCK signal is output

Lighting relay power supply

A3 ←→ Chassis ground

10 - 13 V

ACC or key-in SW ON

Lighting relay power supply (redundant circuit)

B19 ←→ Chassis ground

10 - 13 V

ACC or key-in SW ON

Lighting relay Hi output

A17←→ Chassis ground

9 V or more → less than 1.0 V

Dimmer SW at Hi position

Lighting relay Hi (LH) output

C28 ←→ Chassis ground

9 V or more -+ less than 1.0 V

Dimmer SW at Hi position

Lighting relay Hi (RH) output

C29 ←→ Chassis ground

9 V or more → less than 1.0 V

Dimmer SW at Hi position

Lighting relay Lo output

B35 ←→ Chassis ground

9 V or more → less than 1.0 V

Dimmer SW at Lo position

Lighting Lo relay output 2

A27←→ Chassis ground

9 V or more → less than 1.0 V

Lighting II SW at ON position

Lighting relay I output

A16←→ Chassis ground

9 V or more → less than 1.0 V

Lighting I SW at ON position

Front fog light output

A15←→ Chassis ground

9 V or more → less than 1.0 V

Front fog light SW at ON position

DRL cancel output

D10 ←→ Chassis ground

8 V or more → less than 1.0 V

Headlight switch ON or Hi beam ON, passing switch ON

North America DRL (dedicated light) output

D10 ←→ Chassis ground

9 V or more → less than 1.0 V

When DRL (dedicated light) is ON

Illumination output

Pulse output

Illumination ON

C16

Pulse output

Illumination ON

Key ring illumination

A25

Pulse output

Illumination ON

Room light output

Pulse output

Room light ON (doors interlocked)

Map light output

Pulse output

Map light ON (keyless answer-back, etc.)

Luggage/trunk light output

Pulse output

Luggage/trunk at open state

Front wiper return

A2 ←→ Chassis ground

Less than 1.0 V → 9 V or more

When front wiper is reversed

Front wiper Lo output

A8 ←→ Chassis ground

Less than 1.0 V → 9 V or more

Front wiper Lo SW ON

Front wiper Hi output

B27 ←→ Chassis ground

Less than 1.0 V → 9 V or more

Front wiper Hi SW ON

Front wiper Hi output 2

A18←→ Chassis ground

Less than 1.0 V → 9 V or more

Front wiper Hi SW ON

Answer-back buzzer output

A20←→ Chassis ground

Less than 1.0 V → 9 V or more

When answer-back operates

Rear defogger relay output

A26←→ Chassis ground

9 V or more → less than 1.0 V

Rear defogger SW ON

Wiper deicer relay output

D9 ←→ Chassis ground

9 V or more → less than 1.0 V

Wiper deicer SW ON

Hazard input

D30 ←→ Chassis ground

9 V or more → less than 1.0 V

Hazard SW ON

Turn/hazard output

D18 ←→ Chassis ground

9 V or more → less than 1.0 V

When answer-back is output

Security output

A24←→ Chassis ground

8 V or more → less than 1.0 V

When signal is output

Security indicator light

D26 ←→ Chassis ground

9 V or more → less than 1.0 V

When security indicator light illuminates

Immobilizer communication

A31

Serial communication

(Except for model with keyless access with push button start)

Rear defogger SW

C18 ←→ Chassis ground

Less than 1.5 V → 8 V or more

When the switch is ON

Parking brake SW

C32 ←→ Chassis ground

Less than 1.5 V → 8 V or more

When parking brake is OFF

Impact sensor

A11 ←→ Chassis ground

8 V or more

Apply an impact

Turn signal RH

B9 ←→ Chassis ground

8 V or more → less than 1.5 V

When turn signal switch RH is ON

Turn signal LH

B21 ←→ Chassis ground

8 V or more → less than 1.5 V

When turn signal switch LH is ON

SRF OFF SW input

D14 - Chassis ground

8 V or more → less than 1.5 V

When SRF OFF SW is pressed

SRF relay output (R)

D20 ←→ Chassis ground

Less than 1.5 V → 8 V or more

When SRF RH FOG is operating

SRF relay output (L)

D21←→ Chassis ground

Less than 1.5 V → 8 V or more

When SRF LH FOG is operating

Accessory connector

B29 ←→ Chassis ground

8 V or more → less than 1.5 V

Rear gate/trunk closed →open

⁽¹⁾	*1: For CAN sleep state, hold on for approx. one minute with ignition OFF and the doors, trunk, and rear gate all closed.

⁽²⁾	*2: Use an oscilloscope for measurement due to short output time.