LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 1988 >> Civic LX, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Electronic Control System >> Description & Operation >> Control Devices >> Main Relay
September 30: LEMON manuals is back up on a temporary server! Slowness is possible

Main Relay

One half of main relay is used by ECU to power electric fuel pump. ECU provides a ground for this part of relay when ignition is first turned on (2 seconds), or when an RPM signal is received by ECU (Cranking or running). The second half of the main relay provides power from ignition for the ECU, through a resistor and power for the fuel pump part of relay.

scientia non olet · About LEMON Manuals