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Home >> Suzuki >> 2007 >> Swift + >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls & Fuel - 1.6L - DTC P0324 To P0651 >> DTC P0455 >> Circuit/System Verification
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Circuit/System Verification

With Service Bay Test

    IMPORTANT: Verify the EVAP vent valve functions before proceeding with this diagnostic. You should hear or feel a click when commanded ON with a scan tool. A circuit condition can cause the solenoid to be inoperative without setting a DTC P0448, or a DTC P0449. Refer to DTC P0498 or P0499 .
  1. Verify the EVAP system using the EVAP Service Bay Test. DTC P0455 should not set.
  2. If the vehicle passes the Circuit/System Verification test, then operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that are captured in the Freeze Frame/Failure Records List.

Without Service Bay Test

  1. Verify the following conditions do not exist in the EVAP system:
    • Loose, incorrect, missing, or damaged fuel fill cap
    • Loose, missing, or damaged service port schrader valve
    • A damaged EVAP purge solenoid
    • Disconnected, incorrectly routed, kinked, or damaged EVAP pipes and hoses
    • A damaged EVAP vent valve or EVAP canister
    • If you find any of the above conditions, repair as necessary.
    2. IMPORTANT:
    • Make sure the EVAP vent valve functions before proceeding with this diagnostic. You should hear or feel a click when commanded ON with a scan tool. A circuit condition can cause the solenoid to be inoperative without setting a DTC P0448, or a DTC P0449. Refer to DTC P0498 or P0499 .
    • Refer to the J 41413-200  operation manual for detailed instructions. See Special Tools .
  2. Remove the fuel fill cap. Connect the GE-41415-50  to the fuel tank filler neck. See Special Tools . Connect the J 41413-200  to the GE-41415-50  . See Special Tools .
  3. Calibrate the J 41413-200  Flow Meter to the correct leak orifice for the vehicle. See Special Tools .
    4. IMPORTANT: The EVAP vent solenoid valve will not remain closed when commanded ON with positive pressure applied to the EVAP system.
  4. Disconnect the EVAP vent line from the vent solenoid. Seal the EVAP vent line using the correct plug from the J 41413-300  . See Special Tools .
    5. IMPORTANT: Larger volume fuel tanks and/or those with lower fuel levels may require several minutes for the floating indicator to stabilize.
  5. Activate the J 41413-200  and compare the flow meter's stable floating indicator position to the red flag. See Special Tools . The floating indicator should be below the red flag.
    • If the floating indicator is above the red flag, test for a leak in the EVAP system.
  6. Increase the EVAP purge solenoid to 100 percent. The FTP sensor pressure should drop to less than 1 inch H2O. If the floating indicator is below the red flag, test for a blockage or restriction in the EVAP system.
  7. If the vehicle passes the Circuit/System Verification test, then operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that are captured in the Freeze Frame/Failure Records List.
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