Subaru Legacy III (2000-2003 year). Manual — part 209

EN(H4SOw/oOBD)-26

ENGINE (DIAGNOSTICS)

INSPECTION MODE

8. Inspection Mode

A: OPERATION

1. PREPARATIONS FOR THE INSPECTION
MODE

Raise the vehicle using a garage jack and place on
safety stands or drive the vehicle onto free rollers.

WARNING:
• Before raising the vehicle, ensure parking
brakes are applied.
• Do not use a pantograph jack in place of a
safety stand.
• Secure a rope or wire to the front and rear
towing or tie-down hooks to prevent the lateral
runout of front wheels.
• Do not abruptly depress/release clutch pedal
or accelerator pedal during works even when
engine is operating at low speeds since this
may cause vehicle to jump off free rollers.
• In order to prevent the vehicle from slipping
due to vibration, do not place any wooden
blocks or similar items between the safety
stands and the vehicle.
• Since the rear wheels will also rotate, do not
place anything near them. Also, make sure that
nobody goes in front of the vehicle.

2. WITH SUBARU SELECT MONITOR

After performing diagnostics and clearing the mem-
ory, check for any remaining unresolved trouble da-
ta.
1) Connect test mode connector (green).

2) Connect Subaru select monitor to data link con-
nector. <Ref. to EN(H4SOw/oOBD)-9, LOCATION,
Electrical Components Location.>
3) Turn ignition switch to ON (engine OFF) and
Subaru select monitor switch to ON.

4) On the «Main Menu» display screen, select the
{2. Each System Check} and press the [YES] key.
5) On the «System Selection Menu» display
screen, select the {Engine Control System} and
press the [YES] key.
6) Press the [YES] key after displayed the informa-
tion of engine type.
7) On the «Engine Diagnosis» display screen, se-
lect the {6. Dealer Check Mode Procedure} and
press the [YES] key.
8) When the “Perform Inspection (Dealer Check)
Mode?” is shown on the display screen, press the
[YES] key.
9) Perform subsequent procedures as instructed
on the display screen.

(A) Safety stand

(B) Free rollers

EN-00041

( A )

( B )

(A) Test mode connector

(A) Power mode

EN-01040

( A )

EN-00040

( A )

EN(H4SOw/oOBD)-27

ENGINE (DIAGNOSTICS)

INSPECTION MODE

• If trouble still remains in the memory, the corre-
sponding diagnostic trouble code (DTC) appears
on the display screen.

NOTE:
• For detailed operation procedure, refer to the
SUBARU SELECT MONITOR OPERATION MAN-
UAL.
• For detailed concerning diagnostic trouble
codes, refer to the DIAGNOSTIC TROUBLE CODE

(DTC) LIST. <Ref. to EN(H4SOw/oOBD)-57, LIST,
List of Diagnostic Trouble Code (DTC).>
• Release the parking brake.
• The speed difference between front and rear
wheels may light either the ABS warning light, but
this indicates no malfunctions. When engine con-
trol diagnosis is finished, perform the ABS memory
clearance procedure of self-diagnosis system.

3. WITHOUT SUBARU SELECT MONITOR

Step

Value

Yes

No

1

CHECK STATUS OF CHECK ENGINE MAL-
FUNCTION INDICATOR LAMP (MIL).
1) Start and warm-up the engine.
2) Turn ignition switch to OFF.
3) Set shift lever to neutral position (MT vehi-

cles), or set selector lever to “P” position
(AT vehicles).

4) Connect test mode connector (green).
5) Turn ignition switch to ON.

Does the MIL come on?

MIL illuminates.

Go to step 2.

Check the follow-
ing and repair if
necessary.

NOTE:
• Open or short
circuit in engine
control module
power supply or
ground line
• Open or short
circuit in CHECK
ENGINE malfunc-
tion indicator lamp

2

CHECK DIAGNOSTIC TROUBLE CODE
(DTC).
1) Set selector lever to “N” position, and then

set selector lever to “P” position again (AT
vehicles only).

2) Start the engine.

Does the MIL indicate diagnostic trouble
code (DTC)?

DTC is displayed.

Record diagnostic
trouble code
(DTC) and inspect
using DTC. <Ref.
to EN(H4SOw/
oOBD)-59, Diag-
nostic Procedure
with Diagnostic
Trouble Code
(DTC).>

Go to step 3.

3

CHECK DIAGNOSTIC TROUBLE CODE
(DTC).
1) Drive vehicle at speed greater than 11 km/h

(7 MPH) for at least one minute.

2) Warm-up engine above 2,000 rpm.

Does the MIL indicate diagnostic trouble
code (DTC)?

DTC is displayed.

Record diagnostic
trouble code
(DTC) and inspect
using DTC. <Ref.
to EN(H4SOw/
oOBD)-59, Diag-
nostic Procedure
with Diagnostic
Trouble Code
(DTC).>

Turn ignition
switch to OFF.
Disconnect test
mode connector.
Complete inspec-
tion mode.

NOTE:
When on-board di-
agnosis system in-
dicates no trouble,
the trouble is in a
different symptom.

EN(H4SOw/oOBD)-28

ENGINE (DIAGNOSTICS)

CLEAR MEMORY MODE

9. Clear Memory Mode

A: OPERATION

1. WITH SUBARU SELECT MONITOR

1) On the «Main Menu» display screen, select the {2. Each System Check} and press the [YES] key.
2) On the «System Selection Menu» display screen, select the {Engine Control System} and press the [YES]
key.
3) Press the [YES] key after displayed the information of engine type.
4) On the «Engine Diagnosis» display screen, select the {Clear Memory} and press the [YES] key.
5) When the `Done' and `Turn Ignition Switch OFF' are shown on the display screen, turn the Subaru Select
Monitor and ignition switch to OFF.

NOTE:
• After the memory has been cleared, the ISC must be initialized. To do this, turn the ignition switch to the
ON position. Wait 3 seconds before starting the engine.
• For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL.

2. WITHOUT SUBARU SELECT MONITOR

Step

Value

Yes

No

1

CHECK STATUS OF CHECK ENGINE MAL-
FUNCTION INDICATOR LAMP (MIL).
1) Turn ignition switch to OFF.
2) Set shift lever to neutral position (MT vehi-

cles), or set selector lever to “P” position
(AT vehicles).

3) Connect test mode connector and read

memory connector.

4) Turn ignition switch to ON.

Does the MIL come on?

Mil illuminates.

Go to step 2.

Check the follow-
ing and repair if
necessary.

NOTE:
• Open or short
circuit in engine
control module
power supply or
ground line
• Open or short
circuit in CHECK
ENGINE malfunc-
tion indicator lamp

2

CHECK DIAGNOSTIC TROUBLE CODE
(DTC).
1) Set selector lever to “N” position, and then

set selector lever to “P” position again (AT
vehicles only).

2) Start the engine.
3) Drive vehicle at speed greater than 11 km/h

(7 MPH) for at least one minute.

4) Warm-up engine above 2,000 rpm.

Does the MIL indicate diagnostic trouble
code (DTC)? <Ref. to EN(H4SOw/oOBD)-
57, LIST, List of Diagnostic Trouble Code
(DTC).>

DTC is indicated.

Record diagnostic
trouble code.
Repair the trouble
cause. <Ref. to
EN(H4SOw/
oOBD)-59, Diag-
nostic Procedure
with Diagnostic
Trouble Code
(DTC).>

Turn ignition
switch to OFF.
Disconnect read
memory connec-
tor and test mode
connector. Com-
plete clear mem-
ory mode.

EN(H4SOw/oOBD)-29

ENGINE (DIAGNOSTICS)

COMPULSORY VALVE OPERATION CHECK MODE

10.Compulsory Valve Operation

Check Mode

A: OPERATION

1) Connect test mode connector at the lower por-
tion of instrument panel (on the driver's side), to the
side of the center console box.

2) Each valve functions when ignition switch is
turned to ON (engine OFF).
• A list of the support portion is shown in the follow-
ing table.

(A) Test mode connector

Contents

Compulsory fuel pump relay operation check

Compulsory purge control solenoid valve operation check

Compulsory radiator fan relay operation check

Compulsory air conditioning relay operation check

EN-01040

( A )