Body Integrated Unit

Courtesy of SUBARU OF AMERICA, INC.

Terminal No.

Contents

Measuring condition

Standard

(B280) No. 1 ←→ Chassis ground

BAT power supply (control)

Always

9 - 16 V

(B280) No. 2 ←→ Chassis ground

Turn light output, right front

Right front turn signal OFF → ON

Less than 1 V → 9 - 16 V

(B280) No. 3 ←→ Chassis ground

BAT power supply (head Hi right side) (RHB)

Always

9 - 16 V

(B280) No. 4 ←→ Chassis ground

BAT power supply (illumination)

Always

9 - 16 V

(B280) No. 5 ←→ Chassis ground

Rear wiper RTN

Rear wiper stop position → in operation

Less than 1 V → 9 - 16 V

(B280) No. 6 ←→ Chassis ground

Front wiper RTN

Front wiper stop position → in operation

Less than 1 V → 9 - 16 V

(B280) No. 7 ←→ Chassis ground

BAT power supply (tail)

Always

9 - 16 V

(B280) No. 8 ←→ Chassis ground

Turn light output, left front

Left front turn signal OFF → ON

Less than 1 V → 9 - 16 V

(B280) No. 9 ←→ Chassis ground

Headlight Hi right side output

Headlight Hi OFF → ON

Less than 1 V → 9 - 16 V

(B280) No. 10 ←→ Chassis ground

Tail light output

Tail light OFF → ON

Less than 1 V → 9 - 16 V

(B280) No. 11 ←→ Chassis ground

Illumination output

Illumination OFF → ON

Less than 1 V → 9 - 16 V

(B280) No. 12 ←→ Chassis ground

Key lock solenoid output (Models without the keyless access with push button start system)

Ignition key inserted
Shift lever, P range → other than P range

Less than 1 V → 9 - 16 V

(B287) No. 1 ←→ Chassis ground

GND

Always

Less than 1 Ω

(B287) No. 2 ←→ Chassis ground

Rear wiper relay output

Rear wiper OFF → ON

9 - 16 V → Less than 1 V

(B287) No. 3 ←→ Chassis ground

BAT power supply (head Hi left side) (LHB)

Always

9 - 16 V

(B287) No. 4 ←→ Chassis ground

BAT power supply (shift lock/key lock/turn light)

Always

9 - 16 V

(B287) No. 5 ←→ Chassis ground

DRL output

DRL OFF → ON While the brake pedal is depressed during engine start, release the EPB and shift the select lever to a range other than P.

9 - 16 V → Less than 1 V

(B287) No. 6 ←→ Chassis ground

Lighting relay power supply (control)

ACC OFF → ON (with keyless access with push button start system), or ignition key not inserted → inserted (without keyless access with push button start system)

Less than 1 V → 9 - 16 V

(B287) No. 7 ←→ Chassis ground

Headlight Hi left side output

Headlight Hi OFF → ON

Less than 1 V → 9 - 16 V

(B287) No. 8

(B281) No. 1 ←→Chassis ground

Front fog light relay output

After turning the lighting II switch to ON, turn the front fog light switch from OFF to ON

9 - 16 V → Less than
1 V

(B281) No. 2 ←→ Chassis ground

Answer-back buzzer

Answer-back buzzer OFF → ON

Less than 1 V → 9 - 16 V

(B281) No. 3 ←→ Chassis ground

Hood switch (closed side)

Hood closed → open

Less than 1 V → 9 - 16 V

(B281) No. 4 ←→ Chassis ground

Wiper deicer output

Rear window defogger switch OFF → ON (press and hold for three seconds)

9 - 16 V → Less than 1 V

(B281) No. 5 ←→ Chassis ground

Rear defogger output

Rear window defogger switch OFF → ON

9 - 16 V → Less than 1 V

(B281) No. 6

(B281) No. 7 ←→ Chassis ground

BAT (backup)

Always

9 - 16 V

(B281) No. 8

(B281) No. 9 ←→ Chassis ground

Security horn output

Security horn, not operating → operating

9 - 16 V → Less than 1 V

(B281) No. 10

(B281) No. 11

(B281) No. 12

(B281) No. 13

(B281) No. 14 ←→ Chassis ground

EGI immobilizer communication

Always (Without keyless access with push button start system and without immobilizer Control Module)

1 MΩ or more

(B281) No. 15

(B281) No. 16 ←→ Chassis ground

Stop light switch

Stop light switch OFF → ON

Less than 1 V → 9 - 16 V

(B281) No. 17

Body CAN (H)

Except for sleep status ⁽¹⁾

Serial communication

(B281) No. 18

(B281) No. 19

Body CAN (L)

Except for sleep status ⁽¹⁾

Serial communication

(B281) No. 20 ←→ Chassis ground

Lighting Lo relay output (control)

Lighting II switch OFF → ON

9 - 16 V → Less than 1 V

(i84) No. 1 ←→ Chassis ground

Key-in switch (without keyless access with push button start system)
ACC switch (with keyless access with push button start system)

Ignition key not inserted → inserted (without keyless access with push button start system)
ACC switch OFF → ON (with keyless access with push button start system)

Less than 1 V → 9 - 16 V

(i84) No. 2 ←→ Chassis ground

Turn light output, left rear

Left rear turn signal OFF → ON

Less than 1 V → 9 - 16 V

(i84) No. 3 ←→ Chassis ground

Shift lock solenoid

IG ON
Shift lever P range
Stop light switch OFF (brake pedal not depressed) → ON (brake pedal depressed)

Less than 1 V → 9 - 16 V

(i84) No. 4 ←→ Chassis ground

GND

Always

Less than 1 Ω

(i84) No. 5 ←→ Chassis ground

Turn light output, right rear

Right rear turn signal OFF → ON

Less than 1 V → 9 - 16 V

(i84) No. 6 ←→ Chassis ground

Door lock output (driver's seat unlock)

When UNLOCK signal is output

Less than 1 V → 9 - 16 V

(i84) No. 7 ←→ Chassis ground

Electric fuel unlock output

When UNLOCK signal is output

Less than 1 V → 9 - 16 V

(i84) No. 8 ←→ Chassis ground

Luggage light output

Rear gate close → open (rear gate switch in DOOR position)

Less than 1 V → 9 - 16 V

(i84) No. 9 ←→ Chassis ground

Room light output

All doors closed → any door open (room light switch in DOOR position)

Less than 1 V → 9 - 16 V

(i84) No. 10

(i171) No. 1

Main system CAN (H)

Except for sleep status ⁽¹⁾

Serial communication

(i171) No. 2

Main system CAN (L)

Except for sleep status ⁽¹⁾

Serial communication

(i171) No. 3 ←→ Chassis ground

Immobilizer antenna (A)

When ignition key inserted (Without keyless access with push button start system and without immobilizer Control Module)

Pulse generation

(i171) No. 4 ←→ Chassis ground

Immobilizer antenna (B)

When ignition key inserted (Without keyless access with push button start system and without immobilizer Control Module)

Pulse generation

(i171) No. 5

(i171) No. 6 ←→ Chassis ground

Opener switch (rear gate)

Rear gate opener button OFF → ON

9 - 16 V → Less than 1 V

(i171) No. 7

(i171) No. 8

Illumination sensor GND

(i171) No. 9 ←→ Chassis ground

Key ring illumination output

IG OFF → ON with driver's door open (With key ring illumination and without keyless access with push button start system)

Less than 1 V → 9 - 16 V

(i171) No. 10 ←→ Chassis ground

Map light output

All doors closed → any door open (map light switch in DOOR position)

Less than 1 V → 9 - 16 V

(i171) No. 11

(i171) No. 12 ←→ Chassis ground

Manual unlock switch

Door unlock switch OFF → ON

9 - 16 V → Less than 1 V

(i171) No. 13 ←→ Chassis ground

Door switch (passenger's seat)

Passenger's door closed → open

9 - 16 V → Less than 1 V

(i171) No. 14 ←→ Chassis ground

Door switch (rear seat LH)

Rear seat LH door closed → open

9 - 16 V → Less than 1 V

(i171) No. 15 ←→ Chassis ground

Door switch (rear gate)

Rear gate close → open

9 - 16 V → Less than 1 V

(i171) No. 16

(i171) No. 17

(i171) No. 18 ←→ Chassis ground

Lighting Lo relay output (redundant circuit)

Lighting II switch OFF → ON

9 - 16 V → Less than 1 V

(i171) No. 19 ←→ Chassis ground

Lighting II switch (redundant circuit)

Lighting II switch OFF → ON

9 - 16 V → Less than 1 V

(i171) No. 20 ←→ Chassis ground

Security indicator light output

When security light is illuminating

Pulse generation

(i171) No. 21

(i171) No. 22

(i171) No. 23 ←→ Chassis ground

Lighting relay power supply (redundant circuit)

ACC OFF → ON (with keyless access with push button start system), or ignition key not inserted → inserted (without keyless access with push button start system)

Less than 1 V → 9 - 16 V

(i171) No. 24

Diagnosis related CAN (H)

Except for sleep status ⁽¹⁾

Serial communication

(i171) No. 25

Diagnosis related CAN (L)

Except for sleep status ⁽¹⁾

Serial communication

(i171) No. 26 ←→ Chassis ground

Dimmer Hi switch

Dimmer switch Hi beam OFF → ON

9 - 16 V → Less than 1 V

(i171) No. 27 ←→ Chassis ground

Door switch (rear seat RH)

Rear seat RH door closed → open

9 - 16 V → Less than 1 V

(i171) No. 28 ←→ (i171) No. 8

Illumination sensor signal

With the lighting AUTO switch

0 - 5 V

(i171) No. 29

(i171) No. 30

(i171) No. 31

(i171) No. 32 ←→ Chassis ground

Manual lock switch

Door lock switch OFF → ON

9 - 16 V → Less than 1 V

(i171) No. 33 ←→ Chassis ground

Turn signal switch right

Turn signal switch right OFF → ON

9 - 16 V → Less than 1 V

(i171) No. 34 ←→ Chassis ground

Illumination sensor power supply output

Ignition switch OFF → ON

Less than 1 V → 5 V

(i171) No. 35 ←→ Chassis ground

Lighting I switch

Lighting I switch OFF → ON

9 - 16 V → Less than 1 V

(i171) No. 36 ←→ Chassis ground

Dimmer Pass switch

Dimmer switch Pass OFF → ON

9 - 16 V → Less than 1 V

(i171) No. 37 ←→ Chassis ground

Turn hazard switch

Turn hazard switch OFF → ON

9 - 16 V → Less than 1 V

(i171) No. 38 ←→ Chassis ground

Turn signal switch left

Turn signal switch left OFF → ON

9 - 16 V → Less than 1 V

(i171) No. 39 ←→ Chassis ground

Door switch (driver's seat)

Driver's door closed → open

9 - 16 V → Less than 1 V

(i171) No. 40 ←→ Chassis ground

P range switch

Shift lever, other than P range → P range

9 - 16 V → Less than 1 V

(i81) No. 1

(i81) No. 2

LIN communication 2

Except for sleep status ⁽¹⁾

Serial communication

(i81) No. 3 ←→ Chassis ground

Rear wiper switch (INT)

Rear wiper switch INT OFF → ON

9 - 16 V → Less than 1 V

(i81) No. 4

(i81) No. 5

(i81) No. 6 ←→ Chassis ground

Door lock status switch passenger's seat

Passenger's door lock → unlock (with keyless access with push button start system)

9 - 16 V → Less than 1 V

(i81) No. 7 ←→ Chassis ground

Hood switch input (open side)

Hood open → close

Less than 1 V → 9 - 16 V

(i81) No. 8

(i81) No. 9

(i81) No. 10 ←→ Chassis ground

Rear washer switch

Rear washer switch OFF → ON

9 - 16 V → Less than 1 V

(i81) No. 11

(i81) No. 12 ←→ Chassis ground

Front washer switch

Front washer switch OFF → ON

9 - 16 V → Less than 1 V

(i81) No. 13

(i81) No. 14

(i81) No. 15 ←→ Chassis ground

Lane departure warning OFF switch

Lane departure warning OFF switch OFF → ON

9 - 16 V → Less than 1 V

(i81) No. 16

(i81) No. 17

(i81) No. 18

LIN communication 1

Except for sleep status ⁽¹⁾

Serial communication

(i81) No. 19 ←→ Chassis ground

Rear wiper switch (ON)

Rear wiper switch OFF → ON

9 - 16 V → Less than 1 V

(i81) No. 20 ←→ Chassis ground

Lighting AUTO switch (except for C5 model)
Lighting switch OFF (C5 model)

Lighting AUTO switch OFF → ON (except for C5 model)
Lighting switch OFF OFF → ON (C5 model)

9 - 16 V → Less than 1 V

(i81) No. 21

(i81) No. 22 ←→ Chassis ground

Door lock status switch driver's seat

Driver's door lock → unlock (with keyless access with push button start system)

9 - 16 V → Less than 1 V

(i81) No. 23

(i81) No. 24

(i81) No. 25

(i81) No. 26 ←→ Chassis ground

Front fog light switch

Front fog light switch OFF → ON

9 - 16 V → Less than 1 V

(i81) No. 27

(i81) No. 28 ←→ Chassis ground

Lighting II switch (control)

Lighting II switch OFF → ON

9 - 16 V → Less than 1 V

(i81) No. 29

(i81) No. 30 ←→ Chassis ground

Pre-collision brake OFF switch

Pre-collision brake OFF switch OFF → ON

9 - 16 V → Less than 1 V

(i81) No. 31 ←→ Chassis ground

Collision detection signal

IG ON

Pulse output

(i81) No. 32

⁽¹⁾	CAN or LIN sleep state: Hold on for approx. one minute with ignition switch OFF and all the doors and rear gate closed.