Mitsubishi 3000GT Service Manual page 171

MULTIPORT
FUEL INJECTION - Components
MULTIPORT FUEL INJECTION (MFI) RELAY INSPECTION
Caution
When applying battery voltage directly, make sure that
it is applied to correct terminal. Otherwise, the relay could
be damaged.
(1) Remove the MFI relay.
01 LO220
0 0 0 0 2 5 3 1
(2) Using jumper wires, connect terminal (10) of MFI relay
to battery (+) terminal and terminal (8) of MFI relay to
battery (-) terminal.
(3) Connecting and disconnecting the jumper wire to battery
and (5) of the MFI relay.
(4) Using jumper wires, connect terminal (9) of MFI relay
to battery (+) terminal and terminal (6) of MFI relay to
battery (-) terminal.
(5) Connecting and disconnecting the jumper wire to battery
and (3) of the MFI relay.
l Connected
Disconnected
(6) Using jumper wires, connect terminal (3) of MFI relay
to battery (+) terminal and terminal (7) of MFI relay to
battery (-) terminal.
(7) Connecting and disconnecting the jumper wire to battery
Connected
Disconnected
(8) Replace the MFI relay if any defect is evident.
On-Vehicle Inspection of MFI
Voltage at
Jumper wire
terminal 4
Jumper wire
Jumper wire
Voltage at
terminal 5
Continuity across
terminals 2 and 3
Conductive
Nonconductive
Voltage at terminal 2
o v
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