MFI Control Relay and Ignition Switch-IG
MFI CONTROL RELAYDescription
When the ignition switch is on, battery power is supplied to the engine control module, the injector, the mass air flow sensor, etc. While the ignition switch is turned on, current flows from the ignition switch through the current relay coil to ground.
Circuit Diagram
Harness Inspection Procedure
Harness Inspection Procedure
1. Check continuity of relay contacts by energizing terminals 4(+) and 2(-).
Between terminals 5 and 1
When de-energized: no continuity
When energized: continuity
Between terminals 5 and 3
When de-energized: no continuity
When energized: continuity
2. If faulty, replace the MFI control relay.
Tightening torque: 7 - 11 Nm (5.2 - 8.1 ft lb)