Pinpoint Test

1. Carry out inspection and verification.

   Was the cause of the concern found? 

   • Yes:  REPAIR or INSTALL new components to correct the concern.
   • No  : GO to 2  .

1. Connect the scan tool.
2. Check the system for any of the following EVAP DTCs  : P0446, P0451, P0452, P0453, P0454, P1450, P1451 and P260F.

   Are any of these DTCs  present?

   • Yes:  REFER to SECTION 3: SYMPTOM CHARTS .
   • No  : GO to 3  .

1. Monitor the FTP reference value while filling the fuel tank. Refer to the appropriate vehicle/engine table, refer to SECTION 6: REFERENCE VALUES .

   Is FTP within specification? 

   • Yes:  GO to  5.
   • No:  GO to 4  .

1. Disconnect the fuel tank-to-EVAP canister quick connect coupling at the EVAP canister.
2. Monitor the FTP reference value while filling the fuel tank. Refer to the appropriate vehicle/engine table.

   Is FTP within specification? 

   • Yes:  INSPECT the EVAP system for blockage or restrictions. REPAIR the blockage or restriction. If the blockage or restriction cannot be repaired, INSTALL new EVAP system components.
   • No  : GO to 5  .

1. Remove the fuel tank filler pipe assembly. REFER to FUEL TANK FILLER PIPE .
2. Inspect the fuel tank filler pipe and fuel tank filler pipe vent tube (if equipped) for a blockage or restriction.

   Is the fuel tank filler pipe or fuel tank filler pipe vent tube (if equipped) blocked or restricted? 

   • Yes:  If possible, REPAIR the blockage or restriction. If the blockage or restriction cannot be repaired, INSTALL a new fuel tank filler pipe or fuel tank filler pipe vent tube.
   • No  : GO to 6  .

1. Inspect the fuel tank inlet check valve for restriction or sticking.

Is the fuel tank inlet check valve restricted or sticking? 

• Yes:  If possible, REPAIR the restrictions. If the restriction cannot be repaired, INSTALL a new fuel tank. REFER to FUEL TANK .
• No  : INSTALL a new fuel tank. REFER to FUEL TANK .