Recommended Procedure:
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Verify there is fuel in the tank and battery voltage at the fuel pump. Using a digital multimeter (DMM), measure the voltage between the fuel pump power and ground circuits. Battery voltage is present for approximately 20 seconds after the key is turned to the ON position. If no voltage is present, refer to PINPOINT TEST M - FUEL PUMP MONITOR/CONTROL .
Remove the plug from the front of the engine fuel filter housing. Install the High Pressure Pump Test Adapter 303-765 or equivalent and the Gauge 0-1.1 MPa (0-160 psi) Bar 014-00761 or equivalent. Measure the fuel pressure with the key in the START or ON position. If fuel pressure is below the specification of 310 kPa (45 psi), go to the next step to verify no restriction.