Subaru Impreza 2003 Service Manual page 1201

ENGINE CONTROL MODULE (ECM) I/O SIGNAL
Content nector
#1
#2 B137
Fuel injec-
tor
#3 B137
#4 B137
Idle air
control
Signal B137
solenoid
valve
Signal 1 B134
Fuel pump
control unit
Signal 2 B137
A/C relay control
Radiator fan relay 1
control
Radiator fan relay 2
control
Malfunction indicator
lamp
Engine speed output B137
Purge control solenoid
valve
Signal B135
Manifold
Power
absolute B135
supply
pressure
GND (sen-
sensor
B135
sor)
Fuel level sensor B135
Small light switch B134
Blower fan switch B134
Rear defogger switch B134
Power steering oil pres-
B135
sure switch
Wiper switch B135
Front oxygen (A/F) sen-
sor signal (+)
Front oxygen (A/F) sen-
sor signal (−)
Front oxygen (A/F) sen-
sor shield
SSM/GST communica-
B134
tion line
Torque control 1 signal B134
Torque control 2 signal B134
Torque control cut sig-
B137
nal
AT diagnosis input sig-
B135
nal
AT load signal B135
GND (sensors) B135
Con-
Termi-
Ignition SW ON
nal No.
No.
(Engine OFF)
B84 1 10 — 13
6 10 — 13
5 10 — 13
4 10 — 13
10 0 or 13 — 14
13
16
ON: 0.5, or less
B84 27
OFF: 10 — 13
ON: 0.5, or less
B84 17
OFF: 10 — 13
ON: 0.5, or less
B84 28
OFF: 10 — 13
B84 15
9
ON: 1, or less
B84 16
OFF: 10 — 13
8 1.7 — 2.4
9
19
25 0.12 — 4.75
ON: 0
17
OFF: 10 — 13
ON: 0
9
OFF: 10 — 13
ON: 0
3
OFF: 10 — 13
24 10 — 13
ON: 10 — 13
12
OFF: 0
B84 29 2.8 — 3.2
B84 19 2.4 — 2.7
B84 18
Less than 1 ←→ More
21
than 4
19 More than 4
18 More than 4
14
Less than 1 ←→ More
20
than 4
28 4.3 — 4.4
19
EN(H4DOTC)-25
Signal (V)
Engine ON (Idling)
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
ON: 1, or less
OFF: 13 — 14
1.1 — 1.6
5 5
0 0
0.12 — 4.75
ON: 0
OFF: 13 — 14
ON: 0
OFF: 13 — 14
ON: 0
OFF: 13 — 14
ON: 0
OFF: 13 — 14
ON: 13 — 14
OFF: 0
2.8 — 3.2
2.4 — 2.7
0 0
Less than 1 ←→ More
than 4
More than 4
More than 4
8 8
Less than 1 ←→ More
than 4
0.9 — 1.4
0 0
ENGINE (DIAGNOSTICS)
Note
Waveform
Waveform
Waveform
Waveform
Waveform
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Model with A/C only
Light "ON": 1, or less
Light "OFF": 10 — 14
Waveform
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Waveform
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