Subaru Legacy IV (2008 year). Manual - part 511
EN(H6DO)(diag)-17
Engine Control Module (ECM) I/O Signal
ENGINE (DIAGNOSTICS)
5. Engine Control Module (ECM) I/O Signal
A: ELECTRICAL SPECIFICATION
Description
Connector
No.
Terminal
No.
Signal (V)
Reference
Ignition SW ON
(engine OFF)
Engine ON
(idling)
Crankshaft posi-
tion sensor
Signal (+)
B134
13
0
–7 — +7
Waveform
Signal (–)
B134
14
0
0
—
Shield
B134
24
0
0
—
Camshaft posi-
tion sensor (LH)
Signal
B134
21
0.275
0 or 5
Waveform
Ground
B134
22
0
0
—
Camshaft posi-
tion sensor (RH)
Signal
B134
11
0.275
0 or 5
Waveform
Ground
B134
22
0
0
—
Electronic throt-
tle control
Main
B134
18
0.64 — 0.94
Fully opened: 4.01
0.64 — 0.72
(After engine is
warmed up.)
Fully closed: 0.6
Fully opened: 4.01
Sub
B134
28
1.51 — 1.76
Fully opened: 4.23
1.51 — 1.58
(After engine is
warmed up.)
Fully closed: 1.48
Fully opened: 4.23
Electronic throttle control motor
(+)
B137
5
Duty waveform
Duty waveform
Drive frequency:
500 Hz
Electronic throttle control motor
(–)
B137
4
Duty waveform
Duty waveform
Drive frequency:
500 Hz
Electronic throttle control motor
power supply
B136
1
10 — 13
12 — 14
—
Electronic throttle control motor
relay
B136
21
ON: 0
OFF: 10 — 13
ON: 0
OFF: 12 — 14
When ignition switch
is turned to ON: ON
EGR valve
Signal A+
B134
8
10 — 13
12 — 14
—
Signal A–
B134
9
10 — 13
12 — 14
—
Signal B+
B134
10
10 — 13
12 — 14
—
Signal B–
B134
20
10 — 13
12 — 14
—
EN-05288
B134
5
6
7
8
2
1
9
4
3
10
24
22
23
25
11
12
13
14
15
26
27
28
16
17
18
19
20
21
33
34
29
32
30
31
B136
5
6
7
8
2
1
9
4
3
10
24
22
23
25
11
12
13
14
15
26
27
28
16
17
18
19
20
21
33
34
29
32
30
31
35
B135
5
6
7
8
2
1
9
4
3
10
24
22
23
25
11
12
13
14
15
26
27
28
16
17
18
19
20
21
29
30
31
32
33
34
35
B137
5
6
7
8
2
1
9
4
3
10
22
23
11
12
13
14
15
24
25
26
16
17
18
19
20
21
27
28
29
30
31
TO A:
TO B:
TO C:
TO D: