Mitsubishi 3000GT 1991 Service Manual page 153

FUEL SYSTEM - On-vehicle inspection of MPI Components
connector
6 1
connector
side
connec-
tor
Measure th& power supply voltage of
the control relay.
Connector: Disconnected
l
Ignition switch: START (when
l
@@checked)
Ignition switch: ON (when @@
l
checked)
Check for an open-circuit, or a short-
circuit to ground between the control
relay and the engine control unit.
Control relay connector: Discon-
l
nected
Enaine control unit connector:
l
Disconnected
Engine control
unit harness
side connector
Check for continuity of the ground
circuit.
Connector: Disconnected
l
Check for an open-circuit, or a short-
circuit to ground between the control
relay and the fuel pump.
Control relay connector: Discon-
l
nected
Fuel pump connector: Discon-
l
vision
Repair the
harness.
(Ignition
(Ignition
switch-[ST]
Repair the
harness.
Repair the
harness.
A
Repair the
harness.
I