Subaru 2009 IMPREZA Service Manual page 2391

Description
ABS wheel speed sensor
(Wheel speed sensor)
CAN communication line (+)
CAN communication line (–)
Valve relay power supply *1
Motor relay power supply *1
G sensor
Stop light switch *1
Subaru Select Monitor
Power supply *1
Grounding line
Vehicle speed output signal
*1: Measure the I/O signal voltage after removing the connector from the ABSCM&H/U terminal.
Control Module I/O Signal
Power
supply
Front LH wheel
Signal
Power
supply
Front RH wheel
Signal
Power
supply
Rear LH wheel
Signal
Power
supply
Rear RH wheel
Signal
Power supply
Ground
Output
ABS(diag)-11
Terminal
No.
Measured value and measuring conditions
(+) — (–)
16 — 15
1 5.9 — 16.8 mA: Rectangle waveform
5 — 15
6 5.9 — 16.8 mA: Rectangle waveform
2 — 15
17 5.9 — 16.8 mA: Rectangle waveform
3 — 15
4 5.9 — 16.8 mA: Rectangle waveform
26 2.5 — 1.5 V pulse signal
11 3.5 — 2.5 V pulse signal
14 — 15
13 — 15
24 — 10
10
21 — 10 2.1 — 2.5 V when the vehicle is on level surface
1.5 V or less when the stop light is OFF; otherwise,
20 — 15
10 — 15 V when the stop light is ON.
1.5 V or less when no data is received. 0
7 — 15
12 V pulse (in communication)
18 — 15 10 — 15 V when the ignition switch is ON.
15
23 — 15
ABS (DIAGNOSTICS)
Input/Output signal
4.5 — 16.5 V
4.5 — 16.5 V
4.5 — 16.5 V
4.5 — 16.5 V
10 — 15 V
10 — 15 V
4.75 — 5.25 V
—
—
0 5 V pulse