honda Workshop Repair Guides

Honda Workshop Service and Repair Manuals

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PGM-FI Main Relay <--> [Main Relay (Computer/Fuel System)]|Locations|Page 4411 > < PGM-FI Main Relay <--> [Main Relay (Computer/Fuel System)]|Locations|Page 4409

Civic EX Sedan L4-1668cc 1.7L SOHC (VTEC) MFI (2001)

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PGM-FI Main Relay: Description and Operation

PGM-FI Main Relay 1 and 2

The PGM-FI relay consists of two separate relays. PGM-FI main relay 1 is energized whenever the ignition switch is ON (II) which supplies battery
voltage to ECM/PCM, power to the injectors, and power for PGM-FI main relay 2. PGM-FI main relay 2 is energized to supply power to the fuel pump
for 2 seconds when the ignition switch is turned ON (II), and when the engine is running.

PGM-FI Main Relay <--> [Main Relay (Computer/Fuel System)]|Locations|Page 4411 > < PGM-FI Main Relay <--> [Main Relay (Computer/Fuel System)]|Locations|Page 4409