Subaru Legacy IV (2008 year). Manual - part 300

EN(H4DOTC)(diag)-21

Engine Control Module (ECM) I/O Signal

ENGINE (DIAGNOSTICS)

Ground (engine 1)

B134

5

0

0

 — 

Ground (engine 2)

B137

7

0

0

 — 

Ground (engine 3)

B137

2

0

0

 — 

Ground (engine 4)

B137

1

0

0

 — 

Ground (engine 5)

B137

3

0

0

 — 

Ground (body)

B136

6

0

0

 — 

Input/output name

Measuring condition

Waveform

1. Crankshaft position sensor

At idling

2. Camshaft position sensor

At idling

Contents

Connector 

No.

Terminal 

No.

Signal (V)

Note

Ignition SW ON

(engine OFF)

Engine ON

(idling)

EN-05322

ONE CRANK ROTATION

5V

10ms

0

EN-05359

ONE CAM ROTATION

ONE CAM ROTATION

LH

5V

50ms

0

RH

0

EN(H4DOTC)(diag)-22

Engine Control Module (ECM) I/O Signal

ENGINE (DIAGNOSTICS)

JOINT

CONNECTOR

MT

1

5

4

11

13

2

3

AT

1

12

TEST MODE 

CONNECTOR

A

CCELERA

T

OR PED

AL 

POSITION SENSOR

JOINT
CONNECTOR

NEUTRAL

SWITCH

CLUTCH
SWITCH

STARTER

RELAY

IGNITION SWITCH

STARTER MOTOR

FUEL PUMP 

CONTROL UNIT

FUEL

PUMP

RELAY

C25

C16

C6

B21

B29

B22

B30

B31

B27

B23

M/B FUSE No. 13

F/B FUSE No. 4

TCM

MT

MT

MT

MT

DATA LINK 

CONNECTOR

MT

MT

AT

AT

CLUTCH START 

SWITCH

INHIBITOR

RELAY

C32

B5

B19

B17

C12

C31

B33

C20

AT

FUEL

TEMPER-

ATURE 

SENSOR

12

EN-06976

F/B FUSE No. 21

F/B FUSE No. 12

M/B FUSE No. 11

EN(H4DOTC)(diag)-23

Engine Control Module (ECM) I/O Signal

ENGINE (DIAGNOSTICS)

D29

C23

C21

C1

 SBF-5

 SBF-7

A22

D18

B2

A7

A11

7

6

A21

5

C7

D19

D20

D21

D26

D6

C11

A30

A33

C22

I/F

I/F

EN-05715

MAIN

RELAY

ELECTRONIC 
THROTTLE 
CONTROL 
RELAY

PURGE CONTROL 

SOLENOID VALVE  1

PURGE CONTROL 

SOLENOID VALVE  2

INTAKE CAMSHAFT 

POSITION SENSOR LH

INTAKE CAMSHAFT 

POSITION SENSOR RH

POWER STEERING 
OIL PRESSURE 
SWITCH

F/B FUSE No.7

F/B FUSE No.5

IGNITION COIL 

No.1

IGNITION COIL 

No.2

IGNITION COIL 

No.3

IGNITION COIL 

No.4

PCV

HOSE ASSY

COMBINATION METER

MALFUNCTION
INDICATOR LIGHT

MICR

O COMPUTER

CAN

TRANSCEIVER

& RECEIVER

TACHO-
METER

SPEEDO-
METER

ENGINE

COOLANT

TEMPER-

ATURE 
GAUGE

POWER 
SUPPLY CIRCUIT

BOD

Y INTEGRA

TED 

UNIT (CAN 

COMMUNICA

TION)

EN(H4DOTC)(diag)-24

Engine Control Module (ECM) I/O Signal

ENGINE (DIAGNOSTICS)

A18

D11

D10

D9

D8

D27

B18

A34

A29

A6

A19

D4

A28

D5

B34

B26

B35

7

4

8

7

3

10

9

EN-06126

FUEL INJECTOR No. 1

FUEL INJECTOR No. 2

FUEL INJECTOR No. 3

FUEL INJECTOR No. 4

WASTEGATE

SOLENOID VALVE

MASS AIR FLO

W

& INT

AKE AIR

TEMPERA

TURE

SENSOR

ENGINE

COOLANT

TEMPERATURE

SENSOR

MANIFOLD

ABSOLUTE
PRESSURE

SENSOR

ELECTRONIC

THROTTLE

CONTROL