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Home >> Mazda >> 2008 >> 3 Mazdaspeed, 2.3 M >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting [Engine Controls L3 With TC) >> Engine Control System Operation Inspection [L3 With TC] >> Purge Control System Inspection >> If simulation function of M-MDS is used:

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 2AB)
      • Purge solenoid valve (stuck open)
  4. Connect the M-MDS to the DLC-2 and verify that the DTC P0403 is displayed. Perform the DTC inspection. (See DTC TABLE [L3 WITH TC] .)
  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.
  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.
    • If the EVAPCP PID is 0%  , inspect the following.
      • MAF, APP1, APP2, TP_REL and LOAD PIDs.
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