Subaru Legacy 2003 Service Manual page 1860

ENGINE CONTROL MODULE (ECM) I/O SIGNAL
Content
Signal B84
Mass air
Shield B84
flow sen-
sor GND B84
Intake air temperature
sensor signal
Wastegate control sole-
noid valve
Starter switch
A/C switch
Ignition switch
Neutral position switch
(MT)
Neutral position switch
(AT)
Test mode connector
Signal
Knock
sensor
Shield
Back-up power supply
Control unit power sup-
ply
Sensor power supply
Line end check
#1
#2
Ignition
control
#3
#4
#1
#2
Fuel injec-
tor
#3
#4
Idle air
control
Signal
solenoid
valve
Signal 1
Fuel pump
controller
Signal 2
A/C relay control
Radiator fan relay 1
control
Radiator fan relay 2
control
Malfunction indicator
lamp
Engine speed output
Torque control signal 1
Torque control signal 2
Torque control cut sig-
nal
Purge control solenoid
valve
Con-
Termi-
nector
Ignition SW ON
nal No.
No.
(Engine OFF)
13
8
7
B135 27
B137 24 10 — 13
B134 16
ON: 10 — 13
B134 6
B134 14 10 — 13
B134 8
B134 8
B134 5
B135 4
B135 22
B137 10 10 — 13
B137 2 10 — 13
B137 3 10 — 13
B135 9
B134 10
B136 24
B136 23
B136 22
B136 21
B137 1 10 — 13
B136 6 10 — 13
B136 5 10 — 13
B136 4 10 — 13
B136 10 0 or 13 — 14
B134 13
B136 16
ON: 0.5, or less
B137 27
OFF: 10 — 13
ON: 0.5, or less
B137 17
OFF: 10 — 13
ON: 0.5, or less
B137 28
OFF: 10 — 13
B137 15
B136 9
B134 19
B134 18
B136 14
ON: 1, or less
B137 16
OFF: 10 — 13
EN(H4DOSTC)-21
Signal (V)
Engine ON (Idling)
— 0.3 — 4.5
0
0
—
13 — 14
0
ON: 13 — 14
OFF: 0 OFF: 0
13 — 14
ON: 12±0.5
OFF: 0
ON: 0
OFF: 12±0.5
5
2.8
0
13 — 14
13 — 14
13 — 14
5
0
0 13 — 14
0 13 — 14
0 13 — 14
0 13 — 14
1 — 14
1 — 14
1 — 14
1 — 14
0 or 13 — 14
—
—
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
8
ON: 1, or less
OFF: 13 — 14
ENGINE (DIAGNOSTICS)
0
0
—
0 Cranking: 8 — 14
Switch is ON when gear is in
neutral position.
Switch is ON when shift is in "N"
or "P" position.
5 When connected: 0
2.8
0
Ignition switch "OFF": 10 — 13
5
0
Waveform
Waveform
Waveform
Waveform
Waveform
Waveform
Waveform
Waveform
Waveform
—
—
With A/C vehicles only
Light "ON": 1, or less
—
Light "OFF": 10 — 14
Waveform
5
5
8
Note
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