ABS (DIAGNOSTICS) > Control Module I/O Signal

ELECTRICAL SPECIFICATION

(A)

LHD model

(B)

RHD model

   
           

(1)

ABS control module and hydraulic control unit (ABSCM&H/U) connector

       

NOTE:

Terminal numbers in ABSCM&H/U connector are shown in the figure.

ABS warning light illuminates when the connector is removed from ABSCM&H/U.

Description

Terminal No.

(+) — (−)

Input/Output signal

ABS wheel speed sensor

(Wheel speed sensor)

Front LH wheel

1 — 16

0.12 — 1 V (at 20 Hz)

Front RH wheel

6 — 5

Rear LH wheel

3 — 2

Rear RH wheel

19 — 4

CAN communication circuit (+) (for AT models only)

26

1.5 — 2.5 V pulse signal

CAN communication circuit (−) (for AT models only)

11

2.5 — 3.5 V pulse signal

Valve relay power supply *1

14 — 15

10 — 15 V

Motor relay power supply *1

13 — 15

10 — 15 V

G sensor

Power supply

24 — 10

4.75 — 5.25 V

Ground

10

Output

21 — 10

2.1 — 2.5 V when the vehicle is on level surface

Stop light switch *1

20 — 15

1.5 V or less when the stop light is OFF; otherwise, 10 — 15 V when the stop light is ON.

ABS warning light

22 — 15

After turning the ignition switch to ON, 10 — 15 V during 1.5 seconds and 1.5 V or less after 1.5 seconds passed.

Brake warning light (EBD warning light)

8 — 15

After turning the ignition switch to ON, 10 — 15 V during 1.5 seconds and 1.5 V or less after 1.5 seconds passed.

Subaru Select Monitor

7 — 15

1.5 V or less when no data is received.

0 ←→ 12 V pulse (in communication)

Power supply *1

18 — 15

10 — 15 V when the ignition switch is ON.

Grounding line

15

*1: Measure the I/O signal voltage after removing the connector from the ABSCM&H/U terminal.