Mitsubishi 3000GT Service Manual page 310

D Harness side
connector
E Harness side
A Harness side
connector
Harness side
connector
A Harness side
connector
MULTIPORT
On-Vehicle Inspection of MFI
FUEL INJECTION - Components
Engine control
Check for an open-circuit, or a
short-circuit to ground, between
the fuel pump r&ay II and the en-
gine control module.
Fuel pump relay II connector:
l
Disconnected
Engine control module con-
l
nector: Disconnected
Check for continuity between the
connector
fuel pump relay II and the resistor
(for fuel pump).
Fuel pump relay II connector:
l
Disconnected
Resistor (for fuel pump) con-
l
nector: Disconnected.
Measure the power supply volt-
age of the MFI relay.
MFI relay connector: Discon-
l
nected
Ignition switch OFF: 0 V
Ignition switch ON: Battery
Engine control
Check for an open-circuit, or a
module harness
short-circuit to around, between
side connector
the MFI relay and the engine con-
trol module.
MFI relay connector: Discon-
Engine control module con-
l
nector: Disconnected
Check for continuity between the
D Harness side
MFI relay and the fuel pump relay
connector
II.
MFI relay connector: Discon-
l
4
nected
Fuel pump relay II connector:
l
Disconnected
- -
TSB
Revision
voltage
Repair the
harness.
Repair the
harness.
Repair the
harness.
(Ignition
switch [IG] -
A7)