Subaru Legacy 2004 Service Manual page 1304

5. Engine Control Module (ECM) I/O Signal
A: ELECTRICAL SPECIFICATION
To B134
7 6 5 4 3 2
17 16 15 14 13 12 11 10 9
27 26 25 24 23 22 21 20 19
34 33 32 31 30 29
Description
Signal (+)
Crank-
shaft posi- Signal (")
tion sensor
Shield
Signal
Rear oxy-
Shield
gen sen-
GND
sor
(sensor)
Front oxy- Signal 1
gen (A/F)
sensor
Signal 2
heater
Rear oxygen sensor
heater signal
Engine Signal
coolant
tempera-
GND
ture sen-
(sensor)
sor
Signal
Air flow
Shield
sensor
GND
Intake air temperature
sensor signal
Wastegate control sole-
noid valve
Starter switch
A/C switch
Ignition switch
Neutral position switch
Engine Control Module (ECM) I/O Signal
To B135
1 7 6 5 4 3
8 19 18 17 16 15 14 13 12 11
18 27 26 25 24 23
28 35 34 33 32 31
Con-
Termi-
nector
Ignition SW ON
nal No.
No.
(engine OFF)
B135 10
B135 22
B135 31
B137 25
B137 31
B136 35
B134 3
B134 2
B135 2 0 — 13
B136 14 1.0 — 1.4
B136 35
B136 23
B136 32
B136 31
B136 13 0.3 — 4.6
B134 32 0 or 10 — 13
B137 8
ON: 10 — 13
B137 17
OFF: 0
B137 14 10 — 13
B137 9
OFF: 10 — 13
EN(H4DOTC)(diag)-15
To B136
2 1 6 5 4 3
10 9 8 16 15 14 13 12 11
22 21 20 27 26 25 24 23 22
30 29 28 35 34 33 32 31
Signal (V)
Engine ON
(idling)
"7 — +7
0
0
0
0 0 — 0.9
0
0
—
—
1.0 — 1.4
0
— 0.3 — 4.5
0
0
0.3 — 4.6
0 or 13 — 14
0
ON: 13 — 14
OFF: 0
13 — 14
ON: 0 ON: 0
OFF: 13 — 14
ENGINE (DIAGNOSTICS)
To
2 1 7 6 5
10 9 8 7 17 16 15 14
21 20 19 18 17 25 24
30 29 28 31 30
Waveform
0
0
0
0
— Waveform
— Waveform
— Waveform
After engine is warmed-up.
0 After engine is warmed-up.
0
0
Waveform
0 Cranking: 8 — 14
B137
4 3 2 1
13 12 11 10 9 8
23 22 21 20 19 18
29 28 27 26
EN-01812
Note
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