Engine Control Module (Ecm) I/O Signal - Subaru Legacy 2002 Service Manual

ENGINE CONTROL MODULE (ECM) I/O SIGNAL

Con-
Content nector
A/C switch B135
Ignition switch B135
MT B135
Neutral
position
switch
AT B135
Test mode connector B135
Signal B136
Knock sen-
sor
Shield B136
Back-up power supply B136
B136
Control unit power sup-
ply
B136
Sensor power supply B136
Line end check 1 B135
#1, #2 B134
Ignition
control
#3, #4 B134
#1 B134
#2 B134
Fuel injec-
tor
#3 B134
#4 B134
Signal 1 B134
Signal 2 B134
Idle air
control Signal 3 B134
solenoid
Signal 4 B134
valve
Power sup-
B136
ply
Fuel pump relay control B134
A/C relay control B134
Radiator fan relay 1
B134
control
Radiator fan relay 2
B134
control
Malfunction indicator
B134
lamp
Engine speed output B134
Torque control 1 signal B135
Torque control 2 signal B135
Torque control cut sig-
B134
nal
Purge control solenoid
B134
valve
Signal B136
Atmo-
Power sup-
spheric B136
ply
pressure
GND (sen-
sensor
B136
sor)
Fuel level sensor B136
Termi-
Ignition SW ON
nal No.
No.
(Engine OFF)
ON: 10 — 13
27
OFF: 0
7 10 — 13
26
26
14
4
25
9 10 — 13
1 10 — 13
2 10 — 13
15
20
25
26
4 10 — 13
13 10 — 13
14 10 — 13
15 10 — 13
5
6
19
20
2 10 — 13
ON: 0.5, or less
16
OFF: 10 — 13
ON: 0.5, or less
17
OFF: 10 — 13
ON: 0.5, or less
3
OFF: 10 — 13
ON: 0.5, or less
12
OFF: 10 — 13
11
30
16
17
31
ON: 1, or less
2
OFF: 10 — 13
29 3.9 — 4.1
15
16
27 0.12 — 4.75
Signal (V)
Engine ON (Idling)
ON: 13 — 14
OFF: 0
13 — 14
ON: 12±0.5
OFF: 0
ON: 0
OFF: 12±0.5
5 5
2.8 2.8
0 0
13 — 14
13 — 14
13 — 14
5 5
0 0
0 1 — 3.4
0 1 — 3.4
1 — 14
1 — 14
1 — 14
1 — 14
— 1 — 13
— 1 — 13
— 1 — 13
— 1 — 13
13 — 14
0.5, or less
ON: 0.5, or less
OFF: 13 — 14
ON: 0.5, or less
OFF: 13 — 14
ON: 0.5, or less
OFF: 13 — 14
— —
— 0 — 13, or more
5 5
5 5
8 8
ON: 1, or less
OFF: 13 — 14
2.0 — 2.3
5 5
0 0
0.12 — 4.75
EN-25
Engine (Diagnostics)
Note
—
—
On MT vehicle; Switch is ON
when gear is in neutral posi-
tion.
ON AT vehicle; Switch is ON
when shift is in "N" or "P" posi-
tion.
When connected: 0
—
—
Ignition switch "OFF": 10 — 13
—
—
—
—
Waveform
Waveform
Waveform
Waveform
Waveform
Waveform
Waveform
Waveform
Waveform
Waveform
—
—
—
—
With A/C vehicles only
Light "ON": 1, or less
Light "OFF": 10 — 14
Waveform
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—
—
—
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