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PURGE SOLENOID VALVE INSPECTION [SKYACTIV-X 2.0]

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Purge Control System Inspection

1. Connect the M-MDS to the DLC-2.

2. Start the engine and idle it.

3. Display PID [SHRT_FUEL_TRIM] and simulation function [PRG_DUTY] using the M-MDS. (See PID/DATA MONITOR INSPECTION.)(See SIMULATION INSPECTION.)(See PID/DATA MONITOR TABLE [PCM (SKYACTIV-X)].)(See SIMULATION TABLE [PCM (SKYACTIV-X)].)

4. When the 0% duty value of the purge solenoid valve is operated at a 100% duty value using the simulation function [PRG_DUTY], verify that the PID [SHRT_FUEL_TRIM] value fluctuates.

• If the PID [SHRT_FUEL_TRIM] value does not change, inspect the following.

1. Switch the ignition OFF.

2. Switch the ignition ON (engine off).

3. When the 0% duty value of the purge solenoid valve is operated at a 50% duty value using the simulation function [PRG_DUTY], verify the operation sound of the purge solenoid valve.

• If the operation sound can be verified, inspect the following.

― Evaporative hose disconnection or damage (between intake manifold and purge solenoid valve, and purge solenoid valve and charcoal canister)

• If the operation sound cannot be verified, inspect the following.

― Purge solenoid valve airflow inspection (See Airflow Inspection.)

― Open circuit in wiring harnesses and connectors (between PCM terminal 1AX and purge solenoid valve terminal B, purge solenoid valve terminal A and PCM terminal 1CO)

Warning

• When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID/DATA MONITOR AND RECORD capturing function and inspect later.

• While performing this step, always operate the vehicle in a safe and lawful manner.

5. Drive the vehicle at an engine speed of approx. 2,000 rpm for 30 s or more.

6. Verify that the PID [PRG_DUTY] value fluctuates between 0% and 100%.

• If the PID [PRG_DUTY] value fluctuation cannot be verified, replace the purge solenoid valve. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)

Airflow Inspection

1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

2. Remove the purge solenoid valve. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)

Caution

• Be careful not to allow foreign matter to enter when injecting air. Otherwise a malfunction may occur due to foreign matter penetration.

3. Inspect the airflow condition when pressure (66.7 kPa {0.680 kgf/cm², 9.67 psi} or less) is applied to port A under the following conditions.

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Measured condition

Continuity between ports A—B

When voltage is not applied between terminals A and B

No airflow

When voltage is applied between terminals A and B

Airflow detected

Measured condition	Continuity between ports A—B
When voltage is not applied between terminals A and B	No airflow
When voltage is applied between terminals A and B	Airflow detected

• If not as specified, replace the purge solenoid valve. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)