Purge Control System Inspection

1. Start the engine.
2. 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 85^*1 , 4U^*2 )
     • Purge solenoid valve
4. Warm up the engine to the normal operating temperature.
5. Stop the engine.
6. Connect WDS or equivalent to the DLC-2 and verify that the DTC P0443 is shown. Perform DTC inspection. (See DTC TABLE .)
7. Turn the ignition switch to ON position.
8. Select ECT PID.
9. Verify that the engine coolant temperature is above 60°C {140°F}  .
   • If WDS or equivalent indicates below 60°C {140°F}  , perform the ECT sensor inspection.
10. Set the vehicle on the 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 vehicle at engine speed 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 while step  2.
    • If there is no vacuum, inspect the following:
      • Wiring harness and connector (Main relay - purge solenoid valve - PCM terminal 85^*1 , 4U^*2 )
      • Purge solenoid valve
      • MAF, APP1, APP2, TP_REL and LOAD PIDs
    • If there is vacuum, inspect the following:
      • Vacuum hose (Purge solenoid valve - charcoal canister)

*1: California emission regulation applicable ATX model

*2: Except for California emission regulation applicable ATX model