Subaru Legacy 2003 Service Manual page 2987

VDC (DIAGNOSTICS)
Contents
Ignition switch
Front left wheel
ABS sensor
Front right wheel
(Wheel
speed sen-
Rear left wheel
sor)
Rear right wheel
Output (Lateral G sensor)
Power supply
Output (Yaw rate sensor)
Yaw rate
and lateral
Reference (Yaw rate sensor)
G sensor
Test
Ground
CAN communication line (+)
CAN communication line (−)
AET
AEB
Engine
AEC
module
EAS
EAC
Revolution
Valve relay power supply
Valve relay coil
Relay box
Motor relay coil
Motor monitoring
Front left inlet solenoid valve
Front right inlet solenoid valve
Rear left inlet solenoid valve
Rear right inlet solenoid valve
Front left outlet solenoid valve
Front right outlet solenoid valve
Hydraulic
control unit
Rear left outlet solenoid valve
Rear right outlet solenoid valve
Primary cut solenoid valve
Secondary cut solenoid valve
Primary suction solenoid valve
Secondary suction solenoid valve
Power supply
Primary output
Pressure
sensor
Ground
Secondary output
VDC operation indicator light
VDC OFF indicator light
CONTROL MODULE I/O SIGNAL
Terminal
No.
(+)—(−)
28—1
49—19
14—15
16—17
18—46
70—64
63—64
65—64
66—64
67—64
64
2.5 — 1.5 V pulse signal <Ref. to VDC-17, WAVEFORM, MEA-
81—1
3.5 — 2.5 V pulse signal <Ref. to VDC-17, WAVEFORM, MEA-
83—1
1.5 V or less (ABS/TCS/VDC operating); 10 V or more (ABS/TCS/
21—1
43—1
8—1
75—1
45—1
9—1
27—1
47—1
1.5 V or less (ABS/TCS/VDC operating); 10 V or more (ABS/TCS/
22—1
10 V or less (ABS/TCS/VDC operating); 1.5 V or more (ABS/TCS/
10—1
24—1
30—1
31—1
23—1
51—1
3—1
10 — 15 V when the valve is OFF and less than 1.5 V when the
4—1
50—1
25—1
26—1
29—1
2—1
78—76
77—76
76
36—76
Less than 1.5 V during 1.5 seconds when ignition switch is ON,
32—1
1.5 V or less (Ignition switch ON and VDC OFF indicator light ON);
52—1
10 — 15 V (Ignition switch ON and VDC OFF indicator light OFF)
VDC-14
Input/Output signal
Measured value and measuring condition
10 — 15 V when ignition switch is ON.
0.12 — 1 V (When it is 20 Hz.)
2.2 — 2.8 V when vehicle is in horizontal position.
10 — 15 V when ignition switch is ON.
Wave form <Ref. to VDC-17, WAVEFORM, MEASUREMENT,
Control Module I/O Signal.>
2.1 — 2.9 V
40 ms pulse signal with a cycle of 5 — 1 V <Ref. to VDC-17,
WAVEFORM, MEASUREMENT, Control Module I/O Signal.>
SUREMENT, Control Module I/O Signal.>
SUREMENT, Control Module I/O Signal.>
VDC not operating)
10 — 15 V (Ignition switch ON and vehicle at standstill)
10 — 15 V (Ignition switch ON and vehicle at standstill)
3.5 — 1.5 V pulse signal
3.5 — 1.5 V pulse signal
10 — 1.5 V pulse signal
10 — 15 V when ignition switch is ON.
Less than 1.5 V when ignition switch is ON.
VDC not operating)
VDC not operating)
valve is ON.
4.75 — 5.25 V when ignition switch is ON.
0.48 — 0.72 V (Brake pedal released)
0.48 — 0.72 V (Brake pedal released)
and 10 — 15 V after 1.5 seconds.
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