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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 135 (On-Board Diagnostic - Engine Control (4 Of 5)) >> DTC P144A-00; Evaporator System: Clogging Between Fuel Tank And Fuel Tank Pressure Sensor >> Repeatability Verification Procedure

Repeatability Verification Procedure

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
  1. Set the remaining fuel quantity in the fuel tank between 30-85 %.
  2. Verify that OBD-II information (such as FREEZE FRAME DATA (Mode 2)) has been obtained and recorded.
  3. Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5)] .)
  4. Start the engine and switch the ignition off after 5 shave elapsed.
  5. Leave the vehicle for 6 hours or more.
  6. Start the engine and leave it idling for 2 min.
  7. Drive the vehicle for 30 min at a speed of 50 km/h {31 mph} or more(to increase temperature in fuel tank and generate evaporative gas).
    NOTE:
    • If driving the vehicle for 30 min at a speed of 50 km/h {31 mph} or more is not feasible, the vehicle can be driven for a continuous 15 min or more with the engine coolant temperature at 80 °C {176 °F} or more.
  8. Stop the engine.
  9. Leave the vehicle for 1 hours or more.

PID Item/Simulation Item Used In Diagnosis

PID/DATA MONITOR ITEM TABLE

Item Definition Unit Condition/Specification
FTP Fuel tank pressure Pa {KPA} {MPA}, mBar {BAR}, psi, in H20
  • Displays fuel tank pressure
Fuel tank pressure sensor voltage V
  • Fuel tank pressure is equal to barometric pressure: Approx. 2.6 V
SIMULATION ITEM TABLE

Item Definition Unit Operation
EVAPCP Purge solenoid valve control signal %
  • Changes % and forcibly drives/stops purge solenoid valve.
EVAPCV CV solenoid valve control signal Off/On
  • Selects Off/On to forcibly drive/stop the CV solenoid valve.