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Home >> Mazda >> 2000 >> MPV ES >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Emission Systems & Sub-Systems >> Fuel Evaporation (MPV) >> Purge Control Test

Purge Control Test

  1. Start engine. Disconnect vacuum hose from catch tank to purge solenoid valve at valve. Check that there is no vacuum at valve fitting when engine is cold. If no vacuum is present, go to next step. If vacuum is present, check purge solenoid valve and wiring. Repair as necessary.
  2. Warm engine to operating temperature. Turn ignition off. Connect scan tool. Turn ignition on. Select ECT PID. If ECT PID is more than 140°F (60°C), go to next step. If ECT PID is 140°F (60°C) or less, check ECT sensor. Repair as necessary.
  3. Select SIMULATION TEST and PRG V PID. Press start. Using scan tool, increase purge solenoid valve duty cycle to 50 per cent. If valve operation is heard, check vacuum hoses. If valve operation is not heard, check purge solenoid valve. Repair as necessary.
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