Subaru Legacy 2004 Service Manual page 2980

Description
Front LH wheel
Front RH wheel
ABS wheel speed sen-
sor
(Wheel speed sensor)
Rear LH wheel
Rear RH wheel
CAN communication line (+)
CAN communication line (#)
Valve relay power supply *1
Motor relay power supply *1
Power supply
G sensor Ground
Output
Stop light switch *1
ABS warning light
Brake warning light (EBD warning light)
Subaru Select Monitor
ABS diagnosis connector
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
Terminal
No.
(+) — (#)
Power
16 — 15
supply
Signal 1
Power
5 — 15
supply
Signal 6
Power
2 — 15
supply
Signal 17
Power
3 — 15
supply
Signal 4
26
11
14 — 15
13 — 15
24 — 10
10
21 — 10
20 — 15
22 — 15
8 — 15
7 — 15
25 — 15
18 — 15
15
23 — 15
ABS(diag)-13
Input/Output signal
Measured value and measuring conditions
4.5 — 16.5 V
5.9 — 16.8 mA: Rectangle waveform
4.5 — 16.5 V
5.9 — 16.8 mA: Rectangle waveform
4.5 — 16.5 V
5.9 — 16.8 mA: Rectangle waveform
4.5 — 16.5 V
5.9 — 16.8 mA: Rectangle waveform
2.5 — 1.5 V pulse signal
3.5 — 2.5 V pulse signal
10 — 15 V
10 — 15 V
4.75 — 5.25 V
—
2.1 — 2.5 V when the vehicle is on a level surface
Less than 1.5 V when the stop light is OFF; otherwise,
10 — 15 V when the stop light is ON.
After turning the ignition switch to ON, 10 — 15 V during
1.5 seconds and less than 1.5 V after 1.5 seconds
passed.
After turning the ignition switch to ON, 10 — 15 V during
1.5 seconds and less than 1.5 V after 1.5 seconds
passed.
Less than 1.5 V when no data is received.
0 $% 12 V pulse (in communication)
When the ignition switch is ON, 10 — 15 V.
When the ignition switch is ON, 10 — 15 V.
—
0 $% 5 V pulse
ABS (DIAGNOSTICS)