ZDX V6-3.7L (2010)
Fuel Pressure: Testing and Inspection
Fuel Pressure Test
Special Tools Required
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Fuel Pressure Gauge 07406-004000B
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Fuel Pressure Gauge Attachment Set 07AAJ-S6MA150
1. Relieve the fuel pressure See: Fuel Filter/Fuel Pressure Release/Service and Repair.
2. Disconnect the quick-connect fitting. Attach the fuel pressure gauge set and the fuel pressure gauge.
3. Start the engine, and let it idle.
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If the engine starts, go to step 5.
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If the engine does not start, go to step 4.
4. Check to see if the fuel pump is running: Listen to the fuel filler port with the fuel fill cap removed. The fuel pump should run for 2 seconds when
the ignition switch is first turned to ON (II), or the engine start/stop button is pressed to select the ON mode.
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If the pump runs, go to step 5.
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If the pump does not run, check for DTCs, then do the appropriate DTC troubleshooting procedure.
5. Read the fuel pressure gauge.
Fuel pressure should be:
380-430 kPa (3.9-4.4 kgf/cm2, 55-63 psi)
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If the pressure is OK, the test is complete.
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If the pressure is out of specification, replace the fuel pressure regulator See: Fuel Pressure Regulator/Service and Repair and the fuel filter
See: Fuel Filter/Service and Repair, then recheck the fuel pressure.
