Fuel Pressure Hold Inspection

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Mazda Tribute, 2002 Mazda Protege5, 2002 Mazda Protege, 2002 Mazda Millenia, and 2002 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Fuel pump will only operate for about 8 seconds when Output Test Mode is selected and activated.

Release fuel pressure. See FUEL PRESSURE RELEASE . Install fuel pressure gauge. Turn ignition switch on. Connect scan tool to DLC. Select PCM, active command modes, output test mode and fuel pump PID. Press MODE to change to ALL ON mode. Press START, to run fuel pump. Turn fuel pump relay off and observe fuel pressure. Wait one minute. If fuel pressure reading is within 5 psi of previous pressure reading, fuel system is okay. If fuel pressure drops more than 5 psi, inspect fuel injectors for leaks. See Injector Fuel Leakage Inspection .