Subaru 2009 IMPREZA, Service Manual

Page: 2391 / 3619

ABS(diag)-11
Control Module I/O Signal
ABS (DIAGNOSTICS)
*1: Measure the I/O signal voltage after removing the connector from the ABSCM&H/U terminal.
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
mo
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
mo
5 V pulse