Subaru Legacy (2005 year). Manual - part 427

EN(H6DO)(diag)-21

ENGINE (DIAGNOSTICS)

Engine Condition Data

6. Engine Condition Data

A: ELECTRICAL SPECIFICATION

Measuring condition:
• After engine is warmed-up.
• Gear position is in N or P range.
• Turn the A/C to OFF.
• Turn all the accessory switches to OFF.

Remarks

Specifications

Engine load

1.6 — 2.9 (%): Idling

6.4 — 12.8 (%): 2,500 rpm racing

EN(H6DO)(diag)-22

ENGINE (DIAGNOSTICS)

Data Link Connector

7. Data Link Connector

A: NOTE

This connector is used for connecting the Subaru Select Monitor.

CAUTION:
Do not connect any scan tools except Subaru Select Monitor or general scan tool because the circuit 
for Subaru Select Monitor may be damaged.

EN-00037

1

2

3

4

5

7

6

8

9 10 11 12 13

15

14

16

Terminal No.

Remarks

Terminal No.

Remarks

1

Power supply

9

Empty

2

Empty

10

Subaru Select Monitor signal

3

Empty

11

Empty

4

Empty

12

Ground

5

Empty

13

Ground

6

Empty

14

Empty

7

Empty

15

Empty

8

Empty

16

Empty

EN(H6DO)(diag)-23

ENGINE (DIAGNOSTICS)

General Scan Tool

8. General Scan Tool

A: OPERATION

1. HOW TO USE GENERAL SCAN TOOL

1) Prepare a 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 DTC and
freeze frame 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

Read out the data according to repair procedures.
(For detailed operation procedure, refer to the gen-
eral scan tool operation manual.)

NOTE:
For details concerning DTCs, refer to the List of Di-
agnostic Trouble Code (DTC). <Ref. to
EN(H6DO)(diag)-66, List of Diagnostic Trouble
Code (DTC).>

EN-02533

EN(H6DO)(diag)-24

ENGINE (DIAGNOSTICS)

General Scan Tool

2. MODE $01 (CURRENT POWERTRAIN DIAGNOSTIC DATA)

Refer to data denoting the current operating condition of analog input/output, digital input/output or the pow-
ertrain system.
A list of the support data and PID (Parameter Identification) codes are shown in the following table.

NOTE:
Refer to general scan tool manufacturer’s operation manual to access current powertrain diagnostic data
(MODE $01).

PID

Data

Unit of measure

01

Number of emission-related powertrain DTC and malfunction indicator light status

ON/OFF

03

Fuel system control status

—

04

Calculated engine load value

%

05

Engine coolant temperature

°C or °F

06

Short term fuel trim (bank 1)

%

07

Long term fuel trim (bank 1)

%

08

Short term fuel trim (bank 2)

%

09

Long term fuel trim (bank 2)

%

0B

Intake manifold absolute pressure

mmHg, kPa, inHg or 

psig

0C

Engine revolution

rpm

0D

Vehicle speed

km/h or MPH

0E

Ignition timing advance

°

0F

Intake air temperature

°C or °F

10

Air flow rate from manifold absolute pressure sensor

g/s or lb/m

11

Throttle valve opening angle

%

13

Check whether oxygen sensor is installed.

—

15

Rear oxygen sensor output and control amout (Bank 1)

V and %

19

Rear oxygen sensor output and control amout (Bank 2)

V and %

1C

On-board diagnostic system

—

21

Driving distance after malfunction indicator light illuminates

km or miles

24

Oxygen sensor output voltage and short term fuel trim associated with oxygen sensor (bank 
1)

V and %

28

Oxygen sensor output voltage and short term fuel trim associated with oxygen sensor (bank 
2)

V and %

34

Front oxygen (A/F) sensor lambda valve and current (Bank 1)

— and mA

38

Front oxygen (A/F) sensor lambda valve and current (Bank 2)

— and mA