Mitsubishi 3000GT Service Manual page 301

HARNESS INSPECTION
A Harness side
connector
side connector
On-Vehicle Inspection of MFI
FUEL INJECTION - Components
Measure the ignition switch (IG)
terminal input voltage.
Engine control module con-
l
nector: Disconnected
Ignition switch OFF: 0- 1 V
Ignition switch ON: Battery
voltage
l
nected
Battery voltage
Check for an open-circuit, or a
module harries! short-circuit to ground. between
side connector
the engine control module and the
MFI relay.
Engine control module con-
l
MFI relay connector: Discon-
l
nected
Check for an open-circuit, or a
Engine control
module harness
short-circuit to ground between
side connector
the engine control module and the
MFI relay.
MFI relay connector: Discon-
l
Engine control module con-
l
nector: Disconnected
Measure power voltage to the ac-
tuator.
MFI relay connector: Con-
l
l Engine control module con-
Engine cranking: 8V or higher
Engine racing: Battery voltage
harness.
(Ignition
switch - 82)
or check the
ignition
switch
harness.
(Battery -
A3, A4)
Repair the
harness.
Repair the
harness.
(Al -12,25)
Replace the
defective
engine con-
trol module