Subaru Legacy IV (2008 year). Manual - part 512

EN(H6DO)(diag)-21

Engine Control Module (ECM) I/O Signal

ENGINE (DIAGNOSTICS)

Input/output name

Measuring condition

Waveform

1. Crankshaft position sensor

At idling

2. Camshaft position sensor

At idling

EN-05357

ONE CRANK ROTATION

5V

10ms

0

EN-05358

ONE CAM ROTATION

ONE CAM ROTATION

LH

5V

40ms

0

RH

0

EN(H6DO)(diag)-22

Engine Control Module (ECM) I/O Signal

ENGINE (DIAGNOSTICS)

5

1

4

6

GENERATOR

STARTER 

RELAY

IGNITION SWITCH

C16

C6

B21

B29

B22

B30

B31

B27

B23

M/B FUSE No. 13

F/B FUSE No. 4 

TCM

DATA LINK 

CONNECTOR

INHIBITOR

RELAY

C32

B5

B19

C12

C10

C31

A33

B33

C20

EN-06849

7

C25

3

2

B17

1

STARTER MOTOR

F/B FUSE No. 21

F/B FUSE No. 12 

M/B FUSE No. 11

FUEL

PUMP

RELAY

FUEL PUMP 

CONTROL UNIT

FUEL
PUMP ASSY

POWER STEERING 

OIL PRESSURE 

SWITCH

FUEL

TEMPER-

ATURE 

SENSOR

DELIVERY (TEST) 

MODE CONNECTOR

JOINT
CONNECTOR

A

CCELERA

T

OR PED

AL

POSITION SENSOR

JOINT

CONNECTOR

EN(H6DO)(diag)-23

Engine Control Module (ECM) I/O Signal

ENGINE (DIAGNOSTICS)

D19

D20

D21

D22

D23

EN-06850

D6

C11

C22

C1

C21

C23

B2

D29

A21

A11

A22

A7

MICR

O COMPUTER

I/F

D26

D18

8

9

SBF No. 5

F/B FUSE No. 5

C17

DRAIN VALVE

C28

I/F

MAIN

RELAY

MAIN
RELAY 2

RELAY
BLOCK

SBF No. 7

ELECTRONIC 
THROTTLE
CONTROL RELAY

PURGE CONTROL 
SOLENOID VALVE

CAMSHAFT POSITION 

SENSOR LH

CAMSHAFT POSITION 

SENSOR RH

PRESSURE CONTROL 

SOLENOID VALVE

IGNITION

COIL No. 1

IGNITION

COIL No. 2

IGNITION

COIL No. 3

IGNITION

COIL No. 4

IGNITION

COIL No. 5

IGNITION

COIL No. 6

F/B FUSE No. 7

COMBINATION METER

MALFUNCTION

INDICATOR LIGHT

BODY 
INTEGRATED 
UNIT
(CAN
COMMUNICATION)

CAN

TRANSCEIVER

& RECEIVER

POWER

SUPPLY 

CIRCUIT

TACHO- 

METER

ENGINE

COOLANT

TEMPER-

ATURE 

GAUGE

EN(H6DO)(diag)-24

Engine Control Module (ECM) I/O Signal

ENGINE (DIAGNOSTICS)

EN-06851

A18

D11

D10

D9

D8

D12

D13

A23

A34

A29

A6

A19

D4

A28

D5

9

10

9

6

OIL

TEMPERATURE 

SENSOR

ELECTRONIC

THROTTLE

CONTROL

EGR VALVE

A10

A20

A9

A8

11

FUEL INJECTOR  

No. 1

FUEL INJECTOR  

No. 2

FUEL INJECTOR  

No. 3

FUEL INJECTOR  

No. 4

FUEL INJECTOR  

No. 5

FUEL INJECTOR  

No. 6

MANIFOLD

ABSOLUTE
PRESSURE

SENSOR

ENGINE

COOLANT

TEMPERATURE 

SENSOR