S2000 L4-1997cc 2.0L DOHC (VTEC) MFI (2001)
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Main Relay (Computer/Fuel System): Description and Operation
PGM-FI Main Relay
The PGM-FI relay contains two separate relays. One is energized whenever the ignition is on which supplies battery voltage to the ECM, power to the
injectors, and power for the second relay. The second relay is energized to supply power to the fuel pump for 2 seconds when the ignition switch is ON
(II), and when the engine is running.
