Purge Control System Inspection

If simulation function of M-MDS is used: 

1. Start the engine.
2. Disconnect the vacuum hose between the purge solenoid valve and the charcoal canister.
3. Put a finger to the purge solenoid valve and verify that there is no vacuum applied when the engine is cold.
   • If there is a vacuum, inspect the following:
     • Wiring harness and connectors (Purge solenoid valve-PCM terminal 1AI)
     • Purge solenoid valve (stuck open) (See PURGE SOLENOID VALVE INSPECTION .)
4. Connect the M-MDS to the DLC-2 and verify that DTC P0443:00 is displayed. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
   • Perform the DTC inspection. (See DTC P0443:00 [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
5. Select the EVAPCP PID.
6. Increase the duty value of the purge solenoid valve to 50  % and inspect if the operation sound of the valve is heard.
   • If the operation sound is heard, inspect for loose or damaged vacuum hoses. (Intake manifold-Purge solenoid valve-Charcoal canister)
   • If the operation sound is not heard, perform the purge solenoid valve inspection. (See PURGE SOLENOID VALVE INSPECTION .)
7. Warm up the engine to normal operating temperature.
8. Monitor the EVAPCP PID using the M-MDS, and drive the vehicle approx. 2000 rpm  for 30 s or more  . (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
   • If the EVAPCP PID is 0  %, inspect the following PIDs:
     • MAR APP1, APP2, TP_REL and LOAD PIDs (See PCM INSPECTION .)

If simulation function of M-MDS is not used: 

1. Start the engine.
2. Disconnect the vacuum hose between the purge solenoid valve and the charcoal canister.
3. Put a finger to the purge solenoid valve and verify that there is no vacuum applied when the engine is cold.
   • If there is a vacuum, inspect the following:
     • Wiring harness and connectors (Purge solenoid valve-PCM terminal 1 AI)
     • Purge solenoid valve (See PURGE SOLENOID VALVE INSPECTION .)
4. Warm up the engine to the normal operating temperature.
5. Stop the engine.
6. Connect the M-MDS to the DLC-2 and verify that DTC P0443:00 is displayed.
   • Perform the DTC inspection. (See DTC P0443:00 [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
7. Switch the ignition ON (engine off).
8. Select the ECT PID. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
9. Verify that the engine coolant temperature is above 60 °C {140 °F}  .
   • If the M-MDS indicates that the temperature is below 60 °C {140 °F}  , perform the ECT sensor No. 1 inspection. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION .)
10. Set the vehicle on a dynamometer or chassis roller.
    WARNING:

    • When the dynamometer or chassis roller is operating, there is a possibility that the operator may come into contact with or be caught up in the rotating parts, leading to serious injuries or death. When performing work while the dynamometer or chassis roller is operating, be careful not to contact or be caught up in any of the rotating parts.
11. Drive the vehicle at an engine speed to approx. 2000 rpm  for 30 s or more  .
12. Put a finger to the purge solenoid valve and verify that there is no vacuum applied during Step 2.
    • If there is no vacuum, inspect the following:
      • Wiring harness and connector (Main relay-Purge solenoid valve-PCM terminal 1 AI)
      • Purge solenoid valve (See PURGE SOLENOID VALVE INSPECTION .)
      • MAF, APP1, APP2, TP_REL and LOAD PIDs (See PCM INSPECTION .)
    • If there is vacuum, inspect the following:
      • Vacuum hose (Purge solenoid valve-Charcoal canister)