Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 209

EN(H4DOTC)(diag)-60

Drive Cycle

ENGINE (DIAGNOSTICS)

9. DRIVE CYCLE I

CAUTION:

Be careful of the state of the battery when performing the DRIVE CYCLE I consecutively. Performing

the DRIVE CYCLE I consecutively without the engine running may cause a low battery voltage and

battery discharge.
NOTE:

• If it is necessary to perform DRIVE CYCLE I consecutively, drive the vehicle under the following conditions

to release accumulated evaporating gas. Performing the DRIVE CYCLE I consecutively without starting the

engine causes a large amount of evaporating gas to accumulate in the canister, which hinders an accurate

diagnosis.

• After engine is warmed up

• Drive for 10 minutes or more at a speed of 48 km/h (30 MPH) or more (duration of drive can be an ac-

cumulation)

• To obtain an accurate diagnostic result, perform the procedures according to the following points.

• Do not refuel gas immediately before performing DRIVE CYCLE I. There will be a large amount of evap-

orating gas immediately after refuel, which may cause a less accurate diagnostic performance.

• Do not shake the vehicle while performing DRIVE CYCLE I. Shaking the vehicle causes evaporating gas

to increase inside the fuel tank, which may cause a less accurate diagnostic performance.

• Do not perform any service operation including installation or removal of parts or connectors while per-

forming DRIVE CYCLE I. Performing service operation could affect on the functions of related parts, which

may cause a less accurate diagnostic performance.

1) Prepare the Subaru Select Monitor kit. <Ref. to EN(H4DOTC)(diag)-8, PREPARATION TOOL, General

Description.>

2) Prepare PC with Subaru Select Monitor installed.

3) Connect the USB cable to SDI (Subaru Diagnosis Interface) and USB port on the personal computer (ded-

icated port for the Subaru Select Monitor).
NOTE:

The dedicated port for the Subaru Select Monitor means the USB port which was used to install the Subaru

Select Monitor.

4) Connect the diagnosis cable to SDI.

DTC

Item

Condition

*

P0455

Evaporative Emission System Leak Detected (Large Leak)

«Coolant Temp.»: 5 — 45°C (41
— 113°F)
«Intake Air Temp.»: 5 — 50°C
(41 — 122°F)

*

P0456

Evaporative Emission Control System Leak Detected (Very Small Leak)

*

P1451

Evaporative Emission Cont. Sys.

*

P2402

Evaporative Emission System Leak Detection Pump Control Circuit High

*

P2404

Evaporative Emission System Leak Detection Pump Sense Circuit Range/Per-
formance

*

P2420

Evaporative Emission System Switching Valve Control Circuit High

EN-05692

EN(H4DOTC)(diag)-61

Drive Cycle

ENGINE (DIAGNOSTICS)

5) Connect SDI to data link connector located in the lower portion of the instrument panel (on the driver’s side).
CAUTION:

Do not connect the scan tools except for Subaru Select Monitor and general scan tool.

6) Start the PC.

7) Turn the ignition switch to ON (engine OFF) and run the “PC application for Subaru Select Monitor”.

8) On «Main Menu» display, select {Each System Check}.

9) On «System Selection Menu» display, select {Engine Control System}.

10) Click the [OK] button after the information of engine type has been displayed.

11) On «Engine Diagnosis» display, select {OBD System}.

12) On «OBD Menu» display, select {Evaporative System Leak Test}.

13) On «Evaporative System Leak Test» display, select {Evaporative System Leak Test}.

14) On «Evaporative System Leak Test is running. Press Cancel to exit this function.» display, click the [OK]

button to perform evaporative system leak test.

15) When «Conditions have been enabled to control this function. Turn the ignition switch off to terminate the

test.» display appears, wait for 30 minutes without clicking the [OK] button.
CAUTION:

Do not leave the vehicle for an extended period of time after the test is complete. This may cause ear-

ly deterioration of the battery or discharged battery.
NOTE:

• Clicking the [OK] button bring the «Evaporative System Leak Test» display back, although the test is con-

tinuing.

• The Subaru Select Monitor screen does not change after the evaporative system leak test is complete or

when the test is aborted by turning off the ignition switch.

• If «Test conditions are not correct» display appears, check that the values in «Coolant Temp.» and «Intake

Air Temp.» are within the specified range using Subaru Select Monitor. If the conditions are satisfied, make

the necessary preparation for the drive cycle again. <Ref. to EN(H4DOTC)(diag)-55, PREPARATION FOR

DRIVE CYCLE, PROCEDURE, Drive Cycle.>

16) After 30 minutes passed from the start of step 14), click the [OK] button to return to the «Evaporative Sys-

tem Leak Test» display.

17) Click buttons until the «OBD Menu» display appears, then select {Result of on-board monitor test}.

18) In the {Result of on-board monitor test}, check TID $C1 — $CA of MID $3C.

EN-06148

Result of on-board monitor test

Display

Details

Remarks

$0000 is stored in all Val.

During the evaporative system leak test, the
test conditions were not met and the test
was canceled.

Once the test conditions are met, perform the test
again.

All Val. are stored with values

and OK is set to all the results.

Evaporative system leak test is completed
correctly.

While the ignition switch is ON, read temporary
codes using the Subaru Select Monitor.

Some results were no good.

The evaporative system leak test completed
successfully but the results were faulty.

While the ignition switch is ON, read temporary
codes using the Subaru Select Monitor.

EN(H4DOTC)(diag)-62

Drive Cycle

ENGINE (DIAGNOSTICS)

19) When the evaporative system leak test is completed correctly, read the temporary codes with the ignition

switch turned to ON position. If the DTC is recorded, check the appropriate DTC. <Ref. to EN(H4DOTC)(di-

ag)-48, OPERATION, Read Diagnostic Trouble Code (DTC).>
NOTE:

The temporary code will be cleared by turning ignition switch to OFF.

10.DRIVE CYCLE J

1) Idle the engine for 15 minutes or more.

2) Turn the ignition switch to OFF.

3) After 10 hours passed from the start of step 2), read the temporary code using the Subaru Select Monitor.

<Ref. to EN(H4DOTC)(diag)-48, OPERATION, Read Diagnostic Trouble Code (DTC).>

DTC

Item

Condition

P2610

ECM/PCM Internal Engine Off Timer Performance

—

EN(H4DOTC)(diag)-63

Clear Memory Mode

ENGINE (DIAGNOSTICS)

13.Clear Memory Mode

A: OPERATION

1. SUBARU SELECT MONITOR (NORMAL

MODE)

1) On «Main Menu» display, select {Each System

Check}.

2) On «System Selection Menu» display, select

{Engine Control System}.

3) Click the [OK] button after the information of en-

gine type has been displayed.

4) On «Engine Diagnosis» display, select {Clear

Memory}.

5) When the “Clear Memory?” is shown on the

screen, click the [YES] button.

6) When “Done” and “Turn off the ignition switch.”

are shown on the display screen, turn the ignition

switch to OFF.
NOTE:

• Initial diagnosis of electronic throttle control is

performed after memory clearance. Wait for 10

seconds or more after turning the ignition switch to

ON, and then start the engine.

• For detailed operation procedures, refer to “PC

application help for Subaru Select Monitor”.

2. SUBARU SELECT MONITOR (OBD

MODE)

1) On «Main Menu» display, select {Each System

Check}.

2) On «System Selection Menu» display, select

{Engine Control System}.

3) Click the [OK] button after the information of en-

gine type has been displayed.

4) On «Engine Diagnosis» display, select {OBD

System}.

5) On «OBD Menu» display, select {Clear Diagnos-

tic Code(s)}.

6) When the “Clear Diagnostic Code?” is shown on

the screen, click the [Yes] button.

7) When “Done” and “Turn off the ignition switch.”

are shown on the display screen, turn the ignition

switch to OFF.
NOTE:

• Initial diagnosis of electronic throttle control is

performed after memory clearance. Wait for 10

seconds or more after turning the ignition switch to

ON, and then start the engine.

• For detailed operation procedures, refer to “PC

application help for Subaru Select Monitor”.

3. GENERAL SCAN TOOL

For procedures clearing memory using the general

scan tool, refer to the general scan tool operation

manual.
NOTE:

Initial diagnosis of electronic throttle control is per-

formed after memory clearance. Wait for 10 sec-

onds or more after turning the ignition switch to ON,

and then start the engine.