Drive Cycle I

DTC	Item	Condition
P0455	EVAP SYSTEM (CPC) LEAK DETECTED (LARGE LEAK)	«Coolant Temp.»: 5 - 45°C (41 - 113°F) «Intake Air Temp.»: 5 - 50°C (41 - 122°F)
P0456	EVAP SYSTEM (CPC) LEAK DETECTED (VERY SMALL LEAK)
P04AF	EVAP SYSTEM PURGE CONTROL VALVE (CPC) "B" STUCK CLOSED
P1451	EVAP SYSTEM CLOG DETECTED (PIPE)
P2402	EVAP SYSTEM LEAK DETECTION PUMP CONTROL CIRCUIT HIGH
P2404	EVAP SYSTEM LEAK DETECTION PUMP SENSE CIRCUIT RANGE/PERFORMANCE
P2420	EVAP SYSTEM SWITCHING VALVE CONTROL CIRCUIT HIGH

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 accumulation)

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 evaporating 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 performing drive cycle I. Performing service operation could affect on the functions of related parts, which may cause a less accurate diagnostic performance.

Prepare the Subaru Select Monitor 4. <Ref. to PREPARATION TOOL , General Description.>
Prepare PC with Subaru Select Monitor installed.
Connect the USB cable to the DST-i and the USB port on the personal computer (dedicated 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.
Connect the diagnosis cable to DST-i.
Connect the DST-i to the 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.

Fig 1: Locating Data Link Connector
Courtesy of SUBARU OF AMERICA, INC.
Start the PC.
Turn the ignition switch to ON (engine OFF) and run the "PC application for Subaru Select Monitor".
On «Start» display, select «OBD System» and then «Enter».
On «Select System» display, select «Engine Control System» and then select «Enter».
On «Select Function» display, select «Active Test».
On «Active Test» display, select «Evaporative System Leak Test».
On «Evaporative System Leak Test is running. Press Cancel to exit this function.» display, click the [OK] button to perform evaporative system leak test.
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 early deterioration of the battery or discharged battery.
NOTE:
- Clicking the [OK] button bring the «Evaporative System Leak Test» display back, although the test is continuing.
- 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 PREPARATION FOR DRIVE CYCLE , PROCEDURE, Drive Cycle.>
After 30 minutes passed from the start of step 14), click the [OK] button to return to the «Evaporative System Leak Test» display.
Click buttons until the «OBD System» display appears, then select {On-board monitor test result}.

In the {On-board monitor test result}, check TID $C1 - $CA of MID $3C.

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.

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 OPERATION , Read Diagnostic Trouble Code (DTC).>

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