Subaru Legacy (2005 year). Service manual — part 426
EN(H6DO)(diag)-17
ENGINE (DIAGNOSTICS)
Engine Control Module (ECM) I/O Signal
5. Engine Control Module (ECM) I/O Signal
A: ELECTRICAL SPECIFICATION
Description
Connector
No.
Termi-
nal
No.
Signal (V)
Reference
Ignition SW ON
(engine OFF)
Engine ON
(idling)
Crankshaft
position sen-
sor
Signal (+)
B135
10
0
−7 — +7
Waveform
Signal (
−)
B135
22
0
0
—
Shield
B135
31
0
0
—
Camshaft position sensor
(LH)
B135
8
0.275
0 or 5
Waveform
Camshaft position sensor
(RH)
B135
9
0.275
0 or 5
Waveform
Electronic
throttle control
Main
B136
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
B136
29
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
B137
6
10 — 13
12 — 14
—
Electronic throttle control
motor relay
B135
35
ON: 0
OFF: 10 — 13
ON: 0
OFF: 13 — 14
When ignition switch is
turned to ON: ON
Accelerator
pedal position
sensor
Main
B136
17
Fully closed: 1
Fully opened: 3.6
Fully closed: 1
Fully opened: 3.3
—
Power
supply
B136
15
5
5
—
Ground
B136
34
0
0
—
Sub
B136
28
Fully closed: 1
Fully opened: 3.7
Fully closed: 1
Fully opened: 3.3
—
Engine coolant temperature
sensor
B136
14
1.0 — 1.4
1.0 — 1.4
After engine is warmed-up.
Starter switch
B137
8
0
0
Cranking: 8 — 14
EN-01812
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
To
To
To
EN(H6DO)(diag)-18
ENGINE (DIAGNOSTICS)
Engine Control Module (ECM) I/O Signal
Starter relay
B135
32
ON: 0
OFF: 10 — 13
ON: 0
OFF: 13 — 14
—
A/C switch
B137
17
ON: 10 — 13
OFF: 0
ON: 13 — 14
OFF: 0
—
Ignition switch
B137
14
10 — 13
13 — 14
—
Neutral position switch
B137
9
ON: 0
OFF: 12
±0.5
• Switch is ON when
shifted into “P” or “N”
range. (AT model)
• Switch is ON when
shifted into “N” range. (MT
model)
Test mode connector
B137
15
12 — 14
12 — 14
When connected: 0
Knock sensor
1
Signal
B136
25
2.4
2.4
—
Shield
B136
33
0
0
—
Knock sensor
2
Signal
B136
24
2.4
2.4
—
Shield
B136
33
0
0
—
Backup power supply
B135
19
10 — 13
13 — 14
Ignition switch “OFF”:
10 — 13
Control module power sup-
ply
B135
6
10 — 13
13 — 14
—
B135
5
10 — 13
13 — 14
—
Sensor power supply
B136
16
5
5
—
Ignition control
#1
B135
18
0
13 — 14
Waveform
#2
B135
17
0
13 — 14
Waveform
#3
B135
16
0
13 — 14
Waveform
#4
B135
15
0
13 — 14
Waveform
#5
B135
14
0
13 — 14
Waveform
#6
B135
13
0
13 — 14
Waveform
Fuel injector
#1
B136
6
10 — 13
1 — 14
Waveform
#2
B136
5
10 — 13
1 — 14
Waveform
#3
B136
4
10 — 13
1 — 14
Waveform
#4
B136
3
10 — 13
1 — 14
Waveform
#5
B136
2
10 — 13
1 — 14
Waveform
#6
B136
1
10 — 13
1 — 14
Waveform
A/C relay control
B135
33
ON: 0.5 or less
OFF: 10 — 13
ON: 0.5 or less
OFF: 13 — 14
—
Radiator fan control
B134
31
ON: 0.5 or less
OFF: 10 — 13
ON: 0.5 or less
OFF: 13 — 14
—
Radiator fan control power
supply
B135
30
ON: 0.5 or less
OFF: 10 — 13
ON: 0.5 or less
OFF: 13 — 14
—
Self shut-off control
B137
16
0
0
—
Malfunction indicator light
B134
17
—
—
Light ON: 1 or less
Light OFF: 10 — 14
Engine speed output
B134
23
—
0 — 13 or more
Waveform
Purge control solenoid valve
B134
14
ON: 1 or less
OFF: 10 — 13
ON: 1 or less
OFF: 13 — 14
—
EGR solenoid
valve
Signal A+
B134
11
10 — 13
10 — 13
—
Signal A
−
B134
10
10 — 13
10 — 13
—
Signal B+
B134
9
10 — 13
10 — 13
—
Signal B
−
B134
8
10 — 13
10 — 13
—
Power steering switch
B137
10
ON: 1 or less
OFF: 10 — 13
ON: 1 or less
OFF: 13 — 14
—
Description
Connector
No.
Termi-
nal
No.
Signal (V)
Reference
Ignition SW ON
(engine OFF)
Engine ON
(idling)
EN(H6DO)(diag)-19
ENGINE (DIAGNOSTICS)
Engine Control Module (ECM) I/O Signal
A/C middle pressure switch
B136
30
ON: 0
OFF: 10 — 13
ON: 0
OFF: 13 — 14
—
Manifold absolute pressure
sensor
B136
22
3.5 — 4.8
1.1 — 1.9
—
Air flow sensor
Signal
B136
23
0.74
0.3 — 4.5
—
Shield
B136
32
0
0
—
Ground
B136
31
0
0
—
Intake air temperature sen-
sor
B136
13
3.15 — 3.33
3.15 — 3.33
intake air temperature:
25
°C (75°F)
Front oxygen
(A/F) sensor
RH
Signal (+)
B134
33
2.8 — 3.2
2.8 — 3.2
—
Signal (
−)
B134
26
2.4 — 2.7
2.4 — 2.7
—
Shield
B134
25
0
0
—
Front oxygen
(A/F) sensor
heater RH
Signal 1
B134
3
12 — 14
—
Waveform
Signal 2
B134
2
12 — 14
—
Waveform
Front oxygen
(A/F) sensor
LH
Signal (+)
B134
34
2.8 — 3.2
2.8 — 3.2
—
Signal (
−)
B134
27
2.4 — 2.7
2.4 — 2.7
—
Shield
B134
25
0
0
—
Front oxygen
(A/F) sensor
heater LH
Signal 1
B134
1
12 — 14
—
Waveform
Signal 2
B135
7
12 — 14
—
Waveform
Rear oxygen
sensor RH
Signal
B137
24
0
0 — 0.9
—
Shield
B137
31
0
0
—
Rear oxygen sensor heater
RH signal
B135
2
12 — 14
—
Waveform
Rear oxygen
sensor LH
Signal
B137
25
0
0 — 0.9
—
Shield
B137
31
0
0
—
Rear oxygen sensor heater
LH signal
B135
3
12 — 14
—
Waveform
Immobilizer communication
1
B137
19
10
10
—
Immobilizer communication
2
B137
27
10
10
—
Fuel pump
control unit
Signal 1
B137
28
0
13 — 14
—
Signal 2
B135
27
0
0 or 5
—
Brake switch 1
B136
9
When brake pedal is
depressed: 0
When brake pedal is
released: 10 — 13
When brake pedal is
depressed: 0
When brake pedal is
released: 13 — 14
—
Brake switch 2
B136
8
When brake pedal is
depressed: 10 — 13
When brake pedal is
released: 0
When brake pedal is
depressed: 13 — 14
When brake pedal is
released: 0
—
Cruise control command
switch
B136
11
When operating noth-
ing: 3.5 — 4.5
When operating RES/
ACC: 2.5 — 3.5
When operating SET/
COAST: 0.5 — 1.5
When operating CAN-
CEL: 0 — 0.5
When operating
nothing: 3.5 — 4.5
When operating
RES/ACC:
2.5 — 3.5
When operating
SET/COAST:
0.5 — 1.5
When operating
CANCEL: 0 — 0.5
—
Description
Connector
No.
Termi-
nal
No.
Signal (V)
Reference
Ignition SW ON
(engine OFF)
Engine ON
(idling)
EN(H6DO)(diag)-20
ENGINE (DIAGNOSTICS)
Engine Control Module (ECM) I/O Signal
Cruise control main switch
B136
7
ON: 0
OFF: 5
ON: 0
OFF: 5
—
Cruise control clutch switch
B136
10
When clutch pedal is depressed: 0
When clutch pedal is released: 12
MT model
Oil flow con-
trol solenoid
valve RH
Signal (+)
B134
18
0
0.6
—
Signal (
−)
B134
28
0
0
—
Oil flow con-
trol solenoid
valve LH
Signal (+)
B134
19
0
0.6
—
Signal (
−)
B134
29
0
0
—
Oil switching
solenoid valve
RH
Signal (+)
B134
21
0
1.9
—
Signal (
−)
B134
20
0
0
—
Oil switching
solenoid valve
LH
Signal (+)
B135
25
0
1.9
—
Signal (
−)
B135
24
0
0
—
Oil temperature sensor sig-
nal
B136
27
1.0 — 1.4
1.0 — 1.4
After engine is warmed-up.
Variable valve lift diagnosis
oil pressure switch RH
B135
21
0
0
—
Variable valve lift diagnosis
oil pressure switch LH
B135
29
0
0
—
Generator control
B134
22
0 — 6.5
0 — 6.5
—
SSM communication line
B137
20
Less than 1
←→ More
than 4
Less than 1
←→
More than 4
—
GND (sensor)
B136
35
0
0
—
GND (injector)
B137
7
0
0
—
GND (ignition system)
B135
12
0
0
—
GND (power supply)
B135
4
0
0
—
B135
1
0
0
—
GND (control system)
B137
2
0
0
—
B137
1
0
0
—
GND (Front oxygen (A/F)
sensor heater RH)
B134
7
0
0
—
GND (Front oxygen (A/F)
sensor heater LH)
B134
5
0
0
—
GND (Rear oxygen sensor
heater RH)
B134
6
0
0
—
GND (Rear oxygen sensor
heater LH)
B134
4
0
0
—
GND (Electronic throttle
control)
B137
3
0
0
—
Description
Connector
No.
Termi-
nal
No.
Signal (V)
Reference
Ignition SW ON
(engine OFF)
Engine ON
(idling)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст