Subaru Legacy BN/BS (2015-2019) Service Manual: Control module i o signal electrical specification

1 ←> Chassis ground

Battery power supply

Always

8 — 16 V

2 ←> Chassis ground

Ignition power supply (main)

Ignition switch ON

8 — 16 V

3

—

—

—

4

—

—

—

5

—

—

—

6

CAN H (CAN communication line)

—

—

7

CAN L (CAN communication line)

—

—

8

—

—

—

9

—

—

—

10

—

—

—

11

AUDIO (UART communication line)

—

—

12

WARNING BOX (UART communication line)

—

—

13

Auto headlight beam leveler

—

—

14

Washer fluid level sensor

—

—

15

—

—

—

16

—

—

—

17

Charge warning light

—

—

18

Oil pressure warning light

—

—

19

Immobilizer/security indicator light

—

—

20 ←> Chassis ground

GND

Always

Less than 1 -

21

RH turn indicator

—

—

22

LH turn indicator

—

—

23 ←> 24

Ambient sensor (+)

Always

1 — 35 -

24

Ambient sensor (−)

—

—

25 ←> 26

Fuel level sensor (+)

Always

10 — 600 -

26

Fuel level sensor (−)

27

—

—

—

28

—

—

—

29

Illumination control switch (GND)

—

—

30

Illumination control switch (VR)

—

—

31

Illumination control switch (+)

—

—

32

Bright switch signal input

—

—

33

Bright switch signal output

—

—

34

Illumi. (−) PWM

—

—

35

—

—

—

36

—

—

—

37 ←> Chassis ground

SI-X switch

Switch ON

Continuity exists

38 ←> Chassis ground

TFT switch

Switch ON

Continuity exists

39

—

—

—

40

GND

Always

Less than 1 -