Subaru IMPREZA 2001 - Page 16

ABS-15
ABS (DIAGNOSTICS)
CONTROL MODULE I/O SIGNAL
*1: Measure the I/O signal voltage after removing the connector from the ABSCM&H/U terminal.
*2: Measure the I/O signal voltage at connector (B200) or (F74).
Contents
Terminal No.
(+)—(
−
)
Input/Output signal
Measured value and measuring conditions
ABS sensor*2
(Wheel speed sensor)
Front left wheel 9—10
0.12 — 1 V
(When it is 20 Hz.)
Front right wheel 11—12
Rear left wheel 7—8
Rear right wheel 14—15
Valve relay power supply 24—23 10 — 15 V
Motor relay power supply 25—23 10 — 15 V
G sensor*2
(AWD model only)
power supply 30—28 4.75 — 5.25 V
ground 28 —
output 6—28 2.3
±
0.2 V when vehicle is in horizontal position.
Stop light switch*1 2—23
Less than 1.5 V when the stop light is OFF and, 10 — 15 V
when the stop light is ON.
ABS warning light*2 22—23
Less than 1.5 V during 1.5 seconds when ignition switch is ON,
and 10 — 15 V after 1.5 seconds.
AT ABS signal*2
(AT model only)
31—23
Less than 1.5 V when the ABS control still operates and more
than 5.5 V when ABS does not operate.
ABS operation signal monitor*2 3—23
Less than 1.5 V when the ABS control still operates and more
than 5.5 V when ABS does not operate.
Select monitor*2
Data is received. 20—23 Less than 1.5 V when no data is received.
Data is sent. 5—23 4.75 — 5.25 V when no data is sent.
ABS diagnosis connec-
tor*2
Terminal No. 3 29—23 10 — 15 V when ignition switch is ON.
Terminal No. 6 4—23 10 — 15 V when ignition switch is ON.
Power supply*1 1—23 10 — 15 V when ignition switch is ON.
Grounding line 23 —
Grounding line 26 —