ABS (DIAGNOSTICS) > Control Module I/O Signal

ELECTRICAL SPECIFICATION

(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

Measured value and measuring conditions

ABS wheel speed sensor

(Wheel speed sensor)

Front LH wheel

Power supply

16 — 15

4.5 — 16.5 V

Signal

1

5.9 — 16.8 mA: Rectangle waveform

Front RH wheel

Power supply

5 — 15

4.5 — 16.5 V

Signal

6

5.9 — 16.8 mA: Rectangle waveform

Rear LH wheel

Power supply

2 — 15

4.5 — 16.5 V

Signal

17

5.9 — 16.8 mA: Rectangle waveform

Rear RH wheel

Power supply

3 — 15

4.5 — 16.5 V

Signal

4

5.9 — 16.8 mA: Rectangle waveform

CAN communication line (+)

26

2.5 — 1.5 V pulse signal

CAN communication line (−)

11

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

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.

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

—

Vehicle speed output signal

23 — 15

0 ←→ 5 V pulse

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