Purge Control System Inspection

If simulation function of M-MDS is used:

1. Start the engine.
2. Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)
3. Disconnect the evaporative hose between the purge solenoid valve and the charcoal canister.
4. 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 1AX)
   • Purge solenoid valve (stuck open) (See PURGE SOLENOID VALVE INSPECTION .)
5. Connect the M-MDS to the DLC-2 and verify that DTC P0443:00 is displayed. (See DTC P0443:00 .)
   • Perform the DTC inspection. (See DTC P0443:00 .)
6. Select the EVAPCP simulation item. (See ON-BOARD DIAGNOSTIC TEST .)
7. 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 evaporative 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 .)
8. Warm up the engine to normal operating temperature.
9. Monitor the EVAPCP PID using the M-MDS, and drive the vehicle approx. 2, 000 RPM for 30 s or more. (See ON-BOARD DIAGNOSTIC TEST .)

• If the EVAPCP PID is 0 %, inspect the following PIDs:

• MAF, APP1, APP2, TP_REL and LOAD PIDs (See PCM INSPECTION .)

If simulation function of M-MDS is not used:

1. Start the engine.
2. Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)
3. Disconnect the evaporative hose between the purge solenoid valve and the charcoal canister.
4. 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 1AX)
   • Purge solenoid valve (See PURGE SOLENOID VALVE INSPECTION .)
5. 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.
6. Drive the vehicle at an engine speed to approx. 2, 000 RPM for 30 s or more.
7. Put a finger to the purge solenoid valve and verify that there is no vacuum applied during Step 3.

• If there is no vacuum, inspect the following:
  • Wiring harness and connector (Main relay-Purge solenoid valve-PCM terminal 1AX)
  • Purge solenoid valve (See PURGE SOLENOID VALVE INSPECTION .)
• If there is vacuum, inspect the following:

• Evaporative hose (Purge solenoid valve-Charcoal canister)