Subaru Legacy 2001 Service Manual page 31

ENGINE CONTROL MODULE (ECM) I/O SIGNAL
Content
Torque control 2 signal
Torque control cut signal
EGR solenoid valve (A−)
EGR solenoid valve (B−)
EGR solenoid valve (A+)
EGR solenoid valve (B+)
Induction control solenoid valve
Purge control solenoid valve
Fuel level sensor
A/C compressor switch
A/C pressure switch
AT diagnosis input signal
AT load signal
Small light switch
Blower fan switch
Rear defogger switch
Front oxygen (A/F) sensor signal
RH (+)
Front oxygen (A/F) sensor signal
RH (−)
Front oxygen (A/F) sensor signal
LH (+)
Front oxygen (A/F) sensor signal
LH (−)
Front oxygen (A/F) sensor shield
Pressure sensor
Flash check switch
Intake air temperature sensor
Power steering switch
SSM/GST communication line
GND (sensors)
GND (injectors)
GND (ignition system)
GND (power supply)
GND (control systems)
1
GND (oxygen sensor
heater LH)
2
1
GND (oxygen sensor
heater RH)
2
Con-
Termi-
nector
Ignition SW ON
nal No.
No.
(Engine OFF)
B134 18
B136 14
B137 26 10 — 13
B137 25 10 — 13
B137 14 10 — 13
B137 13 10 — 13
B137 23
ON: 1, or less
B137 16
OFF: 10 — 13
B135 25 0.12 — 4.75
B134 13
B135 23
Less than 1 ←→ More
B135 20
than 4
B135 28 4.3 — 4.4
ON: 0
B134 17
OFF: 10 — 13
ON: 0
B134 9
OFF: 10 — 13
ON: 0
B134 3
OFF: 10 — 13
B137 29 3.7 — 3.9
B137 19 2.6 — 4.4
B137 30 3.7 — 3.9
B137 20 2.6 — 4.4
B137 18
B135 8 3.0 — 4.2
B134 20
B135 27
ON: 0
B137 24
OFF: 5
Less than 1 ←→ More
B134 21
than 4
B134 15
B136 8
B136 18
B134 22
B136 17
7
B134
15
B137 21
B137 31
B137 9
B137 8
EN(H6)-29
Signal (V)
Engine ON (Idling)
5 5
8 8
13 — 14
13 — 14
13 — 14
13 — 14
ON: 0
0
OFF: 13 — 14
ON: 1, or less
OFF: 13 — 14
0.12 — 4.75
— —
Less than 1 ←→ More
than 4
0.9 — 1.4
ON: 0
OFF: 13 — 14
ON: 0
OFF: 13 — 14
ON: 0
OFF: 13 — 14
3.7 — 3.9
3.4 — 3.6
3.7 — 3.9
3.4 — 3.6
0 0
1.0 — 2.6
— —
— —
ON: 0
OFF: 5
Less than 1 ←→ More
than 4
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
Engine (DIAGNOSTICS)
Note
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Waveform
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