Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 805

WI-49

Engine Electrical System

WIRING SYSTEM

I/F

B15

1

2

3

4

5

10

11

12

C15

C3

8

9

7

WI-42472

6

B14
A21

A22

A31

A32
C34

B31

B29

B21

C4

B19

C29

B23

D31

A2

A18

A28

A1

A19
B30

D20

A29

A17

A16

A34

A27

A15

A7

A14

A5

D22

D9

D10

D11

A26

A25

D8

D2

D17

D25

A24

A23

D1

A4

A6

D3

A3

D12

C13

C12

I/F

I/F

MA

AA

MA

AA

MA

ECM

LCD

LEAK DIAGNOSIS  CONNECTOR 2

EVAPORATOR 

SENSOR

A/C CONTROL 

PANEL

REV. INDICATOR

: AUTO A/C

: MANUAL A/C

POWER SUPPLY 

CIRCUIT

B

UZZER

DRIVE CIRCUIT

DRIVE CIRCUIT

MICRO COMPUTER

MULTI SELECT

 SWITCH 

(SI-DRIVE)

[S#] INDICATOR

[S] INDICATOR

[I] INDICATOR

REV. INDICATOR

SHIFT-UP 

INDICATOR LIGHT

ENGINE GROUND

ENGINE

 COOLANT 

TEMP. 

GAUGE

TACHOM-

ETER

JOINT GROUND

 CONNECTOR

CAN TRANSCEIVER & 

RECEIVER

OIL PRESSURE

 WARNING LIGHT

MALFUNCTION

 INDICATOR LIGHT

COMBINATION METER

OIL PRESSURE 

SWITCH

CRUISE CONTROL 

SWITCH

STOP LIGHT & 

BRAKE SWITCH

CAN

 COMMUNICATION

CAN 

COMMUNICATION

CRUISE CONTROL SWITCH

NEUTRAL POSITION 

SWITCH

DELIVERY 

(TEST) MODE 

CONNECTOR

TEST MODE 

SUB 

CONNECTOR

DATA LINK CONNECTOR

EXHAUST OIL FLOW CONTROL SOLENOID VALVE RH

EXHAUST OIL FLOW CONTROL SOLENOID VALVE LH

ENGINE COOLANT TEMPERATURE SENSOR

MANIFOLD ABSOLUTE PRESSURE SENSOR

ELECTRONIC THROTTLE CONTROL

LEAK DIAGNOSIS  CONNECTOR 1

IGNITION COIL No. 4

IGNITION COIL No. 3

IGNITION COIL No. 1

IGNITION COIL No. 2

MULTI JOINT

 CONNECTOR

JOINT

 CONNECTOR

JOINT 

CONNECTOR

ACCELERATOR

 PEDAL 

POSITION 

SENSOR

KNOCK SENSOR

TUMBLE GENERATOR VALVE ASSY RH

TUMBLE GENERATOR VALVE ASSY LH

SECONDARY AIR COMBINATION VALVE LH

CRANKSHAFT POSITION SENSOR

SECONDARY AIR COMBINATION VALVE RH

INTAKE OIL FLOW CONTROL SOLENOID VALVE RH

INTAKE OIL FLOW CONTROL SOLENOID VALVE LH

WI-50

Engine Electrical System

WIRING SYSTEM

ECM

10 11 12 13 14 15

25

24

30

9

8

7

17 18 19 20
28

21 22 23

29

32

31

1

2

3

4

5

6

26

33 34

B135

B98

16
27
35

10 11 12 13 14 15

25

24

16

30

9

8

17 18 19

20
28

21 22 23

32

31

26 27

33

34 35

13
14

15 16

17

27

24

25
26

20

21
22

23

29
30

31

28

32 35

33
34

37
38

39

36

40

8

9

10

11 12

1

2

5

3

4

7

6

19

18

WI-33805

B136

5

6

7

2

1

3

4

29

B220

2 3 4 5

6 7 8 9

11 12 13 14

17 18 19 20

1

10

15 16

E/G(S)-01

E/G(S)-01

1

4

R122

1 2

3 4

5 6 7 8 9 10

C:

B:

1 2

R58

1 2

3 4 5

6 7 8 9 10 11 12

1 2
3 4
5 6

R82

R81

R15

R57

5

6

R58

B135

B:

B136

C:

C30

C33

B10

B3

R15

R57

1

10

8

1

R68

2

13
15
16
14

B220

10

8
9
6
7
5

7

4

5

6

10

5

11

R122

B97

R57

R82

R68

E/G(S)-13

E/G(S)-11

E/G(S)-04

B97

R1

B98

R2

B

C

A

GY

GR

R

R

GR

RB

YB

LgR

G

YL

R

YL

R

YL

YL

LgR

G

RB

R

B

GY

GR

LgR

G

RB

RB

B

GR

WG

R

YL

YL

LgR

G

B

L

GR

GY

GR

WG

B

B

(BLACK)

(DARK GRAY)

(BLACK)

PRESSURE CONTROL 

SOLENOID VALVE

FUEL LEVEL SENSOR

FUEL PUMP

FUEL 

PUMP CU

FUEL PUMP RELAY

TO POWER SUPPLY CIRCUIT

FB-38

F/B FUSE NO. 12

(IG)

MB-25

M/B FUSE NO. 11

(B)

FUEL PUMP ASSY

REF. TO FUEL 

GAUGE SYSTEM 

[F/G-01]

REF. TO GND

[GND-05]

REF. TO GND

[GND-01]

RELAY BLOCK

WI-51

Engine Electrical System

WIRING SYSTEM

B135

E/G(S)-02

E/G(S)-02

10 11 12 13 14 15

25

24

16

30

9

8

17 18 19

20
28

21 22 23

32

31

26 27

33

34 35

10 11 12 13 14 15

25

24

30

9

8

7

17 18 19 20
28

21 22 23

29

32

31

1

2

3

4

5

6

26

33 34

5

6

7

2

1

3

4

29

B11

B12

B25

B24

16
27
35

B:

C3

C15

C13

C12

C29

C7

B35

C: B136

B19

MA

WI-30405

C: B136

B: B135

ECM

MA

GY

YB

P

YL

W

Y

Lg

BR

WL

BR

RL

LOr

: MANUAL A/C

REF

. T

O CR

UISE CONTR

OL 

SYSTEM [C/C(S)-02]

REF

. T

O IMMOBILIZER 

SYSTEM [IMB-01]

REF

. T

O RADIA

TOR 

FAN SYSTEM [R/F-01]

REF

. T

O AIR 

CONDITIONING SYSTEM  [M-A/C-01·02] [A-A/C-01·02]

WI-52

Engine Electrical System

WIRING SYSTEM

ECM

E/G(S)-03

E/G(S)-03

B136

B21

5 6 7 8

2

1

9

4

3

10

24

22

23

25

27

26

28

11 12 13

14 15 16

17 18 19 20 21

*

1

Br

B21

E2

C:

10 11 12 13 14 15

25

24

30

9

8

7

17 18 19 20
28

21 22 23

29

32

31

1

2

3

4

5

6

26

33 34

BY

i1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

1 2 3 4 5 6 7 8 9 10 11

12 13 14 15 16 17 18 19 20 21 22
23 24 25 26 27 28 29 30 31 32 33

34 35
42 43

36 37 38 39

48 49 50 51 52 53 54

40 41

44 45

46 47

1 2 3

4 5 6 7

8 9 10 11 12 13 14 15 16

3 4

5 6 7 8 9 10

B135

10 11 12 13 14 15

25

24

16

30

9

8

17 18 19

20
28

21 22 23

32

31

26 27

33

34 35

i53

R98

GL

Br

BrW

WL

GrR

B15

R

C17

L

C2

8

i97

*

1

*

1

*

1

16
27
35

i10

1 2 3

4 5 6 7

8 9 10 11 12 13 14 15 16

i10

2 3 4 5

1

6 7 8

8

5

R33

AD10

R33

i53

1 2

5

6

7

2

1

3

4

29

GL

5

4

WI-42473

BrW

GOr

GrR

BY

BY

GOr

G

12

GrR

17

WL

B36

i1

37

B136

C:

B135

B:

WL

WL

2

i102

R167

E11

BY

19

32

21

22

1

2

LgR

P

26

33

35

27

I/F

I/F

i97

i102

I

S#

S

B:

I/F

LCD

POWER SUPPLY 

CIRCUIT

(BLACK)

DRIVE CIRCUIT

REV. INDICATOR

MULTI SELECT SWITCH

 (SI-DRIVE)

[S#]  INDICATOR

[S]  INDICATOR

[I]  INDICATOR

SHIFT-UP  INDICATOR  LIGHT

CAN TRANSCEIVER & 

RECEIVER

TACHOM-

ETER

ENGINE

 COOLANT 

TEMP. 

GAUGE

MICRO COMPUTER

MALFUNCTION

 INDICATOR LIGHT

OIL PRESSURE

 WARNING LIGHT

JOINT GROUND 

CONNECTOR

OIL PRESSURE  SWITCH

FB-17

F/B FUSE NO. 7

(B)

FB-36

F/B FUSE NO. 5

(IG)

TO POWER SUPPLY CIRCUIT

BUZZER

DRIVE CIRCUIT

REV.  INDICATOR

COMBINATION METER

REF. TO CAN  COMMUNICATION SYSTEM  [CAN-02]

: TERMINAL No. OPTIONAL ARRANGEMENT

REF. TO CAN COMMUNICATION  SYSTEM  [CAN-01]

REF. TO GND

[GND-06]