Subaru Impreza 2003 Service Manual page 437

ENGINE CONTROL MODULE (ECM) I/O SIGNAL
Content nector
Small light switch B137
Blower fan switch B137
Rear defogger switch B137
Front oxygen (A/F) sen-
B136
sor signal 1
Front oxygen (A/F) sen-
B136
sor signal 2
Manifold absolute pres-
B135
sure sensor
Intake air temperature
B137
sensor
Air assisted injector
B134
solenoid valve
Immobilizer input/output B137
Immobilizer input/output B137
Power steering switch B136
Front wiper signal B137
Generator control B136
SSM/GST communica-
B137
tion line
GND (sensors) B135
GND (injectors) B134
GND (ignition system) B136
GND (power supply) B134
B137
GND (control systems)
B135
GND (oxygen sensor
B136
heater 1)
GND (oxygen sensor
B136
heater 2)
* : Without immobilizer
Con-
Terminal
Ignition SW ON
No.
No.
(Engine OFF)
20
OFF: 10 — 13
13
OFF: 10 — 13
4
OFF: 10 — 13
13
22
15
6 3.15 — 3.33
ON: 1, or less
12
OFF: 10 — 13
Less than 1 ←→
17
More than 4
Less than 1 ←→
18
More than 4
ON: 1, or less
9
OFF: 10 — 13
ON: 0, or 10 — 13
11
25
Less than 1 ←→
16
More than 4
19
35
26
7
14
21
5
16
EN(H4SO)-25
Signal (V)
Engine ON (Idling)
ON: 0 ON: 0
OFF: 13 — 14
ON: 0 ON: 0
OFF: 13 — 14
ON: 0 ON: 0
OFF: 13 — 14
— 2.05 — 2.25
— 1.75 — 1.95
4.0 — 4.8 1.1 — 1.9
3.15 — 3.33
ON: 1, or less
OFF: 13 — 14
Less than 1 ←→
More than 4
Less than 1 ←→
More than 4
ON: 1, or less
OFF: 13 — 14
ON: 0, or 13 — 14
OFF: 0 OFF: 0
0 — 6.5 0 — 6.5
Less than 1 ←→
More than 4
0
0
0
0
0
0
0
0
ENGINE (DIAGNOSTICS)
Note
Intake air temperature: 25°C
(75°F)
0
0
0
0
0
0
0
0
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