Subaru Impreza 2002 Service Manual page 253

ENGINE CONTROL MODULE (ECM) I/O SIGNAL
ENGINE (DIAGNOSTICS)
Content
Sensor power supply
Line end check 1
#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
Purge control solenoid
valve
Signal
Power
Pressure
supply
sensor
GND (sen-
sor)
Fuel level sensor
Small light switch
Blower fan switch
Rear defogger switch
Power steering oil pres-
sure switch
Front oxygen (A/F) sen-
sor signal (+)
Front oxygen (A/F) sen-
sor signal (−)
Front oxygen (A/F) sen-
sor shield
SSM/GST communica-
tion line
Torque control 1 signal
Torque control 2 signal
Torque control cut sig-
nal
Con-
Termi-
nector
Ignition SW ON
nal No.
No.
(Engine OFF)
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
ON: 1, or less
B137 16
OFF: 10 — 13
B135 8 1.7 — 2.4
B135 9
B135 19
B135 25 0.12 — 4.75
B134 17
OFF: 10 — 13
B134 9
OFF: 10 — 13
B134 3
OFF: 10 — 13
B135 24 10 — 13
B137 19 2.8 — 3.2
B137 29 2.4 — 2.7
B136 7
Less than 1 ←→ More
B134 21
than 4
B134 19 More than 4
B134 18 More than 4
B136 14
EN(TURBO)-16
Signal (V)
Engine ON (Idling)
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
ON: 1, or less
OFF: 13 — 14
1.1 — 1.6
5
0
0.12 — 4.75
ON: 0 ON: 0
OFF: 13 — 14
ON: 0 ON: 0
OFF: 13 — 14
ON: 0 ON: 0
OFF: 13 — 14
ON: 0
OFF: 13 — 14
2.8 — 3.2
2.4 — 2.7
0
Less than 1 ←→ More
than 4
More than 4
More than 4
8
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
0
0
8
Note
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