Mitsubishi 3000GT Service Manual page 173

HARNESS INSPECTION
Engine control module
harness side connector
connector
,
A Harness side
connector
A Harness side
connector
MULTIPORT
FUEL INJECTION Components
Measure the ignition switch (IG)
terminal input voltage.
Engine control module con-
l
nector: Disconnected
Ignition switch OFF: O-l V
Ignition switch ON: Battery
Measure the power supply volt-
l
- Ignition switch: OFF
MFI relay connector: Discon-
l
nected
Battery voltage
Engine control
Check for an open-circuit, or a
module harness
short-circuit to ground, between
side connector
the engine control module and the
MFI relay.
Engine control module con-
l
nector: Disconnected
MFI relay connector: Discon-
l
nected
Engine control
Check for an open-circuit, or a
module harness
short-circuit to ground between
side connector
the enaine control module and the
MFI reTay.
MFI relav connector: Discon-
l
Engine control module con-
l
nector: Disconnected
I
tuator.
MFI relay connector: Con-
l
nected
Engine control module con-
l
Engine cranking: 8 V or higher
Engine racing: Battery voltage
I
voltage
1
4
Repair the
harness.
I
Repair the
harness.
Replace the
MFI relay or
defective
engine con-
trol module