Mitsubishi 3000GT Service Manual page 182

connector
connector
3
A Harness side
MFI RELAY INSPECTION
Refer to P.l3A-70.
MULTIPORT
On-Vehicle Inspection of MFI
FUEL INJECTION - Components
Measure the power SUDDIV volt-
age of the MF'I relay.
Control relay connector: Dis-
l
connected
Ignition switch OFF: O-l V
Ignition switch ON: Battery
Engine control
Check for an open-circuit, or a
module harness
short-circuit, to ground between
side connector
the MFI relay and the engine con-
trol module.-
* MFI relay connector: Dacon-
Engine control module con-
l
nector: Disconnected
Check for an open-circuit, or a
short-circuit to ground, between
the MFI relay (for fuel pump) and
the fuel pump.'
MFI relay (for fuel pump) con-
l
nector: Disconnected
Fuel pump connector: Dis-
l
connected
Measure the power supply volt-
age of the fuel pump.
MFI relay- connector: Con-
l
Engine control, unit connec-
l
tor: Connected
Engine cranking: 8 V or more
Engine racing: Battery voltage
TSB Revision
voltage
.
the
or check the
ignition
switch.
Repair the
harness.
Repair the
harness.
(Al -Bl)
MFI relay or
engine
control mod-
ule is defec-
tive.