Subaru Legacy 2004 Service Manual page 775

DESCRIPTION
Fuel pump relay control
(Model without immobilizer)
A/C relay control
Radiator fan relay 1 control
Radiator fan relay 2 control
Self-shutoff control (Model
with immobilizer)
Self-shutoff control (Model
without immobilizer)
Malfunction indicator light
Engine speed output
Purge control solenoid valve
Signal A+
Signal A"
EGR solenoid
valve
Signal B+
Signal B"
Power steering switch
Blower fan switch
Front oxygen (A/F) sensor
signal 1
Front oxygen (A/F) sensor
signal 2
Front oxygen (A/F) sensor
shield
Manifold absolute pressure
sensor
Signal
Air flow sensor Shield
Ground
Intake air temperature sen-
sor
Generator control
SSM communication line
1
GND (sensor)
2
GND (injector)
GND (ignition system)
GND (power supply)
GND (control system)
GND (oxygen sensor heater
1)
Engine Control Module (ECM) I/O Signal
Termi-
Connector
nal
Ignition SW ON
No.
No.
(engine OFF)
ON: 0.5 or less
B135 26
OFF: 10 — 13
ON: 0.5 or less
B135 33
OFF: 10 — 13
ON: 0.5 or less
B134 31
OFF: 10 — 13
ON: 0.5 or less
B135 34
OFF: 10 — 13
B137 16
B137 17
B134 17
B134 23
ON: 1 or less
B134 14
OFF: 10 — 13
B134 11
B134 10
B134 9
B134 8
ON: 1 or less
B137 10
OFF: 10 — 13
B137 13
OFF: 10 — 13
B134 33
B134 26
B134 25
B136 22
B136 23
B136 32
B136 31
B136 13
B134 22
Less than 1$% More
B137 20
B136 35
B136 34
B137 7
B135 12
B135 4
B135 1
B137 2
B137 1
B134 7
EN(H4SO 2.5)(diag)-19
Signal (V)
Engine ON
(idling)
0.5 or less
ON: 0.5 or less
OFF: 13 — 14
ON: 0.5 or less
OFF: 13 — 14
ON: 0.5 or less
OFF: 13 — 14
10 — 13 13 — 14
10 — 13 13 — 14
—
— 0 — 13 or more
ON: 1 or less
OFF: 13 — 14
0 or 10 — 13 0 or 10 — 13
0 or 10 — 13 0 or 10 — 13
0 or 10 — 13 0 or 10 — 13
0 or 10 — 13 0 or 10 — 13
ON: 1 or less
OFF: 13 — 14
ON: 0
OFF: 13 — 14
— 2.05 — 2.25
— 1.75 — 1.95
0
4.0 — 4.8 1.1 — 1.9
— 0.3 — 4.5
0
0
3.15 — 3.33 3.15 — 3.33
0 — 6.5 0 — 6.5
Less than 1$%
than 4 More than 4
0
0
0
0
0
0
0
0
0
ENGINE (DIAGNOSTICS)
NOTE
Light "ON": 1 or less
—
Light "OFF": 10 — 14
Waveform
ON: 0
0
0
0
intake air temperature:
25!C (75!F)
0
0
0
0
0
0
0
0
0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—