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Home >> Mazda >> 2002 >> MPV ES >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Emission Systems & Sub-Systems >> Evaporative System Leak Inspection Using Leak Tester >> Leak Inspection
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Leak Inspection

  1. Press RESET switch to set left display reading to 0.0.
  2. Connect fuel cap test adapter (part of SST) to manifold assembly and fuel-filler cap from vehicle. If fuel-filler cap is not a Mazda part, replace it.
  3. Connect threaded test adapter (part of SST) to manifold assembly and fuel-filler neck.
  4. Connect scan tool to DLC-2.
  5. Turn ignition switch on, engine off.
  6. Close Canister Drain Cut Valve (CDCV) using ON BOARD DEVICE CONTROL function.
    NOTE: CDCV is closed for 10 minutes unless any of following action is done:
    • Engine is started.
    • Ignition switch is turned off.
    • Fuel tank pressure sensor signal exceeds 1.9 in. Hg.
  7. Turn control valve to FILL position.
  8. Wait (maximum 40 seconds) until left display reads 13.5 to 14.0 inches of water.
    • If reading is slightly below, adjust reading using regulator knob.
    • If reading is far below, EVAP system has large leak. Check for leak using ultrasonic leak detector if necessary. Repair as necessary.
  9. Turn control valve to TEST position and press START switch.
  10. After 2-minute countdown (left display) is completed, check test result (FAILED/PASSED light on tester).
    • If Green light turns on, EVAP system is OK.
    • If Red light turns on, EVAP system has leakage.
  11. Check for leak using ultrasonic leak detector and repair.
  12. Close gas cylinder valve.
  13. Turn control valve to FILL position.
  14. Press ON/OFF switch to turn off tester.
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