PURGE SOLENOID VALVE INSPECTION [SKYACTIV-G 2.0]

id0116z8097100

Purge Control System Inspection

1.  Connect the M-MDS to the DLC-2.

2.  Start the engine and idle it.

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

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. (See PID/DATA MONITOR INSPECTION.) (See PID/DATA MONITOR TABLE [PCM (SKYACTIV-G)].) (See SIMULATION INSPECTION.) (See SIMULATION TABLE [PCM (SKYACTIV-G)].)

•  If the PID [SHRT_FUEL_TRIM] value changes, go to the next step.

•  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. (See SIMULATION INSPECTION.) (See SIMULATION TABLE [PCM (SKYACTIV-G)].)

•  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 (See Airflow Inspection.)

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

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 does not change, replace the purge solenoid valve. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

•  It the PID [PRG_DUTY] value changes, the purge solenoid valve is normal therefore the inspection is completed.

Airflow Inspection

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

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

3.  Inspect airflow between the ports under the following conditions.

am3zzw00034773

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-G 2.0].)

•  If normal operation can be verified, the purge solenoid valve is normal therefore the inspection is completed.