EFI Main Relay
Turn ignition on, noise should be heard from relay. If no noise is heard from relay, check for continuity between terminals "A" and "C". There should be no continuity between terminals "B" and "D" and "C" and "D". See Fig 1 . If continuity check is not as specified, replace relay.
To check operation of relay, apply 12 volts across terminals "A" and "C". Check for continuity between terminals "B" and "D". If continuity check is not as specified, replace relay. See Fig 1 .