Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 202

EN(H4DOTC)(diag)-32

Engine Control Module (ECM) I/O Signal

ENGINE (DIAGNOSTICS)

D10

EN-09945

D6

D7

D1

D3

D2

D8

D22

D25

D30

D28

D31

D24

B137

D:

D20

D15

D11

D17

D27

D12

D9

D16

D23

D29

SI

SI

SI

ELCM

EXHAUST CAMSHAFT POSITION SENSOR LH

EXHAUST CAMSHAFT POSITION SENSOR RH

: WITH SI-DRIVE

INTAKE CAMSHAFT POSITION SENSOR LH

SECONDARY AIR COMBINATION VALVE

 (WITH BUILT-IN PRESSURE SENSOR)

PCV HOSE ASSY

CRANKSHAFT POSITION SENSOR

TUMBLE GENERATOR VALVE ASSY RH

PURGE CONTROL SOLENOID VALVE 2

MANIFOLD ABSOLUTE PRESSURE SENSOR

INTAKE CAMSHAFT POSITION SENSOR RH

CRANKSHAFT POSITION SENSOR 

(SHIELD)

POWER STEERING OIL PRESSURE SWITCH

EACH CAMSHAFT POSITION SENSOR 

(GROUND)

CRANKSHAFT POSITION SENSOR

ENGINE COOLANT TEMPERATURE SENSOR

KNOCK SENSOR (SHIELD)

KNOCK SENSOR

ENGINE GROUND

ENGINE GROUND

MAIN RELAY

PURGE CONTROL SOLENOID VALVE 1

TUMBLE GENERATOR VALVE ASSY LH

EN(H4DOTC)(diag)-33

Engine Condition Data

ENGINE (DIAGNOSTICS)

6. Engine Condition Data

A: ELECTRICAL SPECIFICATION

Measuring condition:

• After engine is warmed up.

• Place the shift lever in neutral position.

• Turn the A/C to OFF.

• Turn all the accessory switches to OFF.

Content

Specifications

Engine load

17.6 — 35.64 (%): Idling

13.2 — 26.73 (%): 2,500 rpm racing

EN(H4DOTC)(diag)-34

Data Link Connector

ENGINE (DIAGNOSTICS)

7. Data Link Connector

A: NOTE

This connector is used for Subaru Select Monitor.
CAUTION:

Do not connect any scan tools other than Subaru Select Monitor or general scan tool because the cir-

cuit for Subaru Select Monitor may be damaged.

1

2

3

4

5

7

6

8

9 10 11 12 13

15

14

16

EN-04893

Terminal No.

Content

Terminal No.

Content

1

Blank

9

Blank

2

Blank

10

Blank

3

Blank

11

Blank

4

Ground

12

Blank

5

Ground

13

Blank

6

CAN communication (Hi)

14

CAN communication (Lo)

7

Subaru Select Monitor signal

15

Blank

8

Blank

16

Power supply

EN(H4DOTC)(diag)-35

General Scan Tool

ENGINE (DIAGNOSTICS)

8. General Scan Tool

A: OPERATION

1. HOW TO USE GENERAL SCAN TOOL

1) Prepare a scan tool (general scan tool) required

by SAE J1978.

2) Connect the general scan tool to data link con-

nector located in the lower portion of the instrument

panel (on the driver’s side).

3) Using the general scan tool, call up each data.

General scan tool functions consist of:

(1) MODE  $01:  Current  powertrain  diagnostic

data

(2) MODE $02: Powertrain freeze frame data

(3) MODE  $03:  Emission-related  powertrain

DTC

(4) MODE  $04:  Clear/Reset  emission-related

diagnostic information

(5) MODE  $06:  Request  on-board  monitoring

test results for intermittently monitored systems

(6) MODE  $07:  Request  on-board  monitoring

test results for continuously monitored systems

(7) MODE  $08:  Request  control  for  on-board

system, test, and component

(8) MODE $09: Request vehicle information

4) Read  out  the  data  according  to  repair  proce-

dures. (For detailed operation procedure, refer to

the general scan tool operation manual.)
NOTE:

For details concerning DTC, refer to “List of Diag-

nostic 

Trouble 

Code 

(DTC)”. 

<Ref. 

to

EN(H4DOTC)(diag)-87, List of Diagnostic Trouble

Code (DTC).>

EN-06148