Subaru Legacy 2003 Service Manual page 423

ENGINE CONTROL MODULE (ECM) I/O SIGNAL
ENGINE (DIAGNOSTICS)
Content
Blower fan switch
Rear defogger switch
Front oxygen (A/F) sen-
sor signal 1
Front oxygen (A/F) sen-
sor signal 2
Pressure sensor
Intake air temperature
sensor
Immobilizer input/out-
put 1
Immobilizer input/out-
put 2
SSM/GST communica-
tion line
GND (sensors)
GND (injectors)
GND (ignition system)
GND (power supply)
GND (control systems)
GND (oxygen sensor
heater 1)
GND (oxygen sensor
heater 2)
Con-
Termi-
nector
Ignition SW ON
nal No.
No.
(Engine OFF)
B137 13
OFF: 10 — 13
B137 4
OFF: 10 — 13
B136 13
B136 22
B135 15 4.0 — 4.8
B137 6 3.15 — 3.33
Less than 1 ←→ More
B137 17
Less than 1 ←→ More
B137 18
Less than 1 ←→ More
B137 16
B135 19
B134 35
B136 26
B134 7
B137 14
B135 21
B136 5
B136 16
EN(H4SO)-26
Signal (V)
Engine ON (Idling)
ON: 0 ON: 0
OFF: 13 — 14
ON: 0 ON: 0
OFF: 13 — 14
— 2.05 — 2.25
— 1.75 — 1.95
1.1 — 1.9
3.15 — 3.33
Less than 1 ←→ More
than 4 than 4
Less than 1 ←→ More
than 4 than 4
Less than 1 ←→ More
than 4 than 4
0
0
0
0
0
0
0
0
Intake air temperature: 25°C
(75°F)
0
0
0
0
0
0
0
0
Note
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