Main Relay (Computer/Fuel System): Testing and Inspection

Inspection (On vehicle)
Check that a "clicking" sound is heard at the main relay when turning the ignition switch OFF and ON.

Inspection
1. Disconnect the main relay.

B+: Battery Positive Voltage:

2. Apply battery positive voltage and ground to terminals A and B of the main relay.
3. Check continuity between relay terminals C and D.