Electrical Specification

Fig 1: Identifying ABS Control Module And Hydraulic Control Unit Connector Terminals

Courtesy of SUBARU OF AMERICA, INC.

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.

VOLTAGE SPECIFICATION

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)

2.5 - 1.5 V pulse signal

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

3.5 - 2.5 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

Output

21 - 10

2.1 - 2.5 V when the vehicle is on level surface

Stop light switch ⁽¹⁾

20 - 15

Less than 1.5 V 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 ON, 10 - 15 V during 1.5 seconds and less than 1.5 V after 1.5 seconds passed.

Brake warning light (EBD warning light)

8 - 15

After turning the ignition switch ON, 10 - 15 V during 1.5 seconds and less than 1.5 V after 1.5 seconds passed.

Subaru Select Monitor

7 - 15

Less than 1.5 V when no data is received. 0 &Harr; 12 V pulse (in communication)

Power supply ⁽¹⁾

18 - 15

10 - 15 V when the ignition switch Is ON.

Grounding line

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