F1 Perform Fuel Pressure Test

WARNING: BEFORE STARTING THESE TESTS, RELEASE THE FUEL PRESSURE FROM THE FUEL SYSTEM TO REDUCE THE RISK OF INJURY OR FIRE. Fuel System Pressure Relief

^ After releasing the fuel pressure, install Rotunda Fuel Pressure Testing kit 014-00748, or equivalent with EFI Test Adapter D87C-9974-A in the fuel line between the fuel filter and the fuel rail with its main valve open and its drain valve closed.

^ Key ON.

^ Check the fuel pressure.

^ Run the engine.

^ Check the fuel pressure.

^ Is the fuel pressure 275.8-296.5 kPa (40-43 psi) with key ON, and 248.2-262 kPa (36-38 psi) with the engine running?

YES -- GO to FD1. FD1 Check Fuel Injection Function

NO -- (If zero) GO to FA1. FA1 Check Voltage to Fuel Pump
(If low) GO to FB1. FB1 Check Power Supply to Fuel Pump
(If high) GO to FC1. FC1 Check Fuel Pressure Regulator For Cause of High Pressure