FDS3 - Check Fuel Pressure Leakdown

^ Observe Service Precautions to avoid fuel spillage and injury.

^ Connect the fuel pressure test kit at the fuel pressure test point.

STO Connector:

^ Connect a jumper to the Fuel Pump (FP) lead of the Data Link Connector (DLC).

^ Key On, Engine Off.

^ Ground the test lead using the jumper wire to run the fuel pump.

^ Run the fuel pump for 30 seconds minimum.

^ Remove the test lead ground and note fuel pressure on the gauge.

^ Verify whether the fuel pressure remains within the specified 5.0 psi for 1 minute after the test lead is ungrounded.

^ Does fuel pressure remain within 5.0 psi for 1 minute after the test lead is ungrounded?

YES -- Go to FDS5. FDS5 - Check Fuel Pressure With Engine Load

NO -- Go to FDS4. FDS4 - Check Pressure Regulator Diaphragm Condition