Mitsubishi 3000GT Service Manual page 174

MULTIPORT On-Vehicle Inspection of MFI
FUEL INJECTION - Components
MFI RELAY INSPECTION
(1) Remove the MFI relay.
(2) Check for continuity between MFI relay terminals.
(3) Using jumper wires, connect terminal (7) of MFI relay
to battery (+) terminal and terminal (5) of MFI relay to
battery (-) terminal.
Caution
If jumper leads are not connected properly the relay
will be damaged.
(4) Connecting and disconnecting the jumper wire to battery
MFI relay.
(5) Using jumper wires, connect terminal (8) of MFI relay
to battery (+) terminal and terminal (6) of MFI relay to
battery (-) terminal.
(6) Connecting and disconnecting the jumper wire to battery
and (4) (or (3) and (4)) of the MFI relay.
Disconnected
(7) Replace the MFI relay if any defect is evident.
Jumper wire
Connected
Disconnected
Continuity across
Jumper wire
terminals 2 and 4
Connected Conductive (0 Sz)
Nonconductive
I
Voltage
Continuity across
terminals 3 and 4
Conductive (0 Q)
Nonconductive