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Home >> Suzuki >> 2008 >> Swift + >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.6L - DTC P0317 To DTC P2610 >> DTC P0451 or P0454 >> Circuit/System Testing
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Circuit/System Testing

  1. If DTC P0454 is set Inspect for an intermittent and for a poor connection at the FTP sensor and the engine control module (ECM).
  2. Remove the fuel fill cap. Connect the GE-41415-50  to the fuel tank filler neck. Connect the J 41413-200  to the GE-41415-50  .
    3. IMPORTANT: The EVAP vent solenoid valve will not remain closed when commanded ON with positive pressure applied to the EVAP system.
  3. Disconnect the EVAP vent line from the vent solenoid, and seal it, using the correct plug from the J 41413-300  .
  4. Pressurize the EVAP system with nitrogen to 5 inches H2O. Compare the Fuel Tank Pressure Sensor parameter with a scan tool to the J 41413-200  pressure/vacuum gage. The scan tool FTP sensor parameter should be within 1 inch H2O of the pressure/vacuum gage.
    • If the FTP sensor parameter is not within 1 inch H2O of the pressure/vacuum gage, replace the FTP sensor.
  5. Command the purge solenoid valve OPEN with a scan tool.
    • If the FTP sensor parameter is not 0 inch H2O, replace the FTP sensor.
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