Subaru Legacy (2005 year). Service manual — part 183
EN(H4SO 2.5)(diag)-17
ENGINE (DIAGNOSTICS)
Engine Control Module (ECM) I/O Signal
5. Engine Control Module (ECM) I/O Signal
A: ELECTRICAL SPECIFICATION
NOTE:
KA and KS model is the same as 2.0 L model. Refer to EN(H4SO 2.0) section.
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
Sensor output waveform
Signal (
−)
B135
22
0
0
—
Shield
B135
31
0
0
—
Camshaft
position sen-
sor
Signal (+)
B135
11
0
−7 — +7
Sensor output waveform
Signal (
−)
B135
23
0
0
—
Shield
B135
31
0
0
—
Electronic
throttle control
Main
B136
18
0.64 — 0.72
Fully opened: 3.96
0.64 — 0.72
(After engine is
warmed-up.)
Fully closed: 0.6
Fully opened: 3.96
Sub
B136
29
1.51 — 1.58
Fully opened: 4.17
1.51 — 1.58
(After engine is
warmed-up.)
Fully closed: 1.48
Fully opened: 4.17
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
13 — 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: 3.3
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: 3.3
Fully closed: 1
Fully opened: 3.3
—
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(H4SO 2.5)(diag)-18
ENGINE (DIAGNOSTICS)
Engine Control Module (ECM) I/O Signal
Rear oxygen
sensor
Signal
B137
24
0
0 — 0.9
—
Shield
B137
31
0
0
—
Front oxygen
(A/F) sensor
heater
Signal 1
B134
3
0 — 1.0
0 — 1.0
—
Signal 2
B134
2
0 — 1.0
0 — 1.0
—
Rear oxygen sensor heater
signal
B135
2
0 — 1.0
0 — 1.0
—
Engine coolant temperature
sensor
B136
14
1.0 — 1.4
1.0 — 1.4
After engine is warmed-up.
Tumble generator valve RH
(open)
B134
19
0 or 10 — 13
0 or 13 — 14
Sensor output waveform
Tumble generator valve RH
(close)
B134
18
0 or 10 — 13
0 or 13 — 14
Sensor output waveform
Tumble generator valve LH
(open)
B134
29
0 or 10 — 13
0 or 13 — 14
Sensor output waveform
Tumble generator valve LH
(close)
B134
28
0 or 10 — 13
0 or 13 — 14
Sensor output waveform
Tumble generator valve
position sensor RH
B136
27
Fully opened: 0.2 — 1.0
Fully closed: 4.2 — 4.7
—
Tumble generator valve
position sensor LH
B136
26
Fully opened: 0.2 — 1.0
Fully closed: 4.2 — 4.7
—
Starter switch
B137
8
0
0
Cranking: 8 — 14
Starter relay
B135
32
ON: 0
OFF: 10 — 13
ON: 0
OFF: 13 — 14
—
A/C switch (Model with
immobilizer)
B137
17
ON: 10 — 13
OFF: 0
ON: 13 — 14
OFF: 0
—
A/C switch (Model without
immobilizer)
B137
16
ON: 10 — 13
OFF: 0
ON: 13 — 14
OFF: 0
—
Ignition switch (Model with
immobilizer)
B137
14
10 — 13
13 — 14
—
Ignition switch (Model with-
out immobilizer)
B137
15
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
(Model with immobilizer)
B137
15
10 — 13
When connected: 0
Test mode connector
(Model without immobilizer)
B137
14
10 — 13
When connected: 0
Knock sensor
Signal
B136
25
2.8
2.8
—
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
1
B136
16
5
5
—
2
B136
15
5
5
—
Ignition control
1
B135
18
0
1 — 3.4
Waveform
2
B135
17
0
1 — 3.4
Waveform
Description
Connector
No.
Termi-
nal
No.
Signal (V)
Reference
Ignition SW ON
(engine OFF)
Engine ON
(idling)
EN(H4SO 2.5)(diag)-19
ENGINE (DIAGNOSTICS)
Engine Control Module (ECM) I/O Signal
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
Fuel pump relay control
(Model with immobilizer)
B135
27
ON: 0.5 or less
OFF: 10 — 13
0.5 or less
—
Fuel pump relay control
(Model without immobilizer)
B135
26
ON: 0.5 or less
OFF: 10 — 13
0.5 or less
—
A/C relay control
B135
33
ON: 0.5 or less
OFF: 10 — 13
ON: 0.5 or less
OFF: 13 — 14
—
Radiator fan relay 1 control
B134
31
ON: 0.5 or less
OFF: 10 — 13
ON: 0.5 or less
OFF: 13 — 14
—
Radiator fan relay 2 control
B135
34
ON: 0.5 or less
OFF: 10 — 13
ON: 0.5 or less
OFF: 13 — 14
—
Self-shutoff control (Model
with immobilizer)
B137
16
10 — 13
13 — 14
—
Self-shutoff control (Model
without immobilizer)
B137
17
10 — 13
13 — 14
—
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
0 or 10 — 13
0 or 10 — 13
—
Signal A
−
B134
10
0 or 10 — 13
0 or 10 — 13
—
Signal B+
B134
9
0 or 10 — 13
0 or 10 — 13
—
Signal B
−
B134
8
0 or 10 — 13
0 or 10 — 13
—
Power steering switch
B137
10
ON: 1 or less
OFF: 10 — 13
ON: 1 or less
OFF: 13 — 14
—
Blower fan switch
B137
13
ON: 0
OFF: 10 — 13
ON: 0
OFF: 13 — 14
—
A/C middle pressure switch
B136
30
ON: 0
OFF: 10 — 13
ON: 0
OFF: 13 — 14
—
Front oxygen (A/F) sensor
signal 1
B134
33
—
2.05 — 2.25
—
Front oxygen (A/F) sensor
signal 2
B134
26
—
1.75 — 1.95
—
Front oxygen (A/F) sensor
shield
B134
25
0
0
—
Manifold absolute pressure
sensor
B136
22
4.0 — 4.8
1.1 — 1.9
—
Air flow sensor
Signal
B136
23
—
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)
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)
1
B136
35
0
0
—
2
B136
34
0
0
—
GND (injector)
B137
7
0
0
—
Description
Connector
No.
Termi-
nal
No.
Signal (V)
Reference
Ignition SW ON
(engine OFF)
Engine ON
(idling)
EN(H4SO 2.5)(diag)-20
ENGINE (DIAGNOSTICS)
Engine Control Module (ECM) I/O Signal
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 (oxygen sensor heater
1)
B134
7
0
0
—
GND (oxygen sensor heater
2)
B134
6
0
0
—
GND (electronic throttle
control)
B137
3
0
0
—
Cruise control main switch
B136
7
ON: 0
OFF: 10 — 13
ON: 0
OFF: 13 — 14
—
Cruise control clutch switch
B136
10
When clutch pedal is
depressed: 0
When clutch pedal is
released: 10 — 13
When clutch pedal is
depressed: 0
When clutch pedal is
released: 13 — 14
—
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)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст