Mitsubishi 3000GT Service Manual page 176

FUEL PUMP <Up to 1993 Models - Non Turbo>
A Equipment side
connector
A Harness side
connector
Engine control
OPERATION
Drives the fuel pump during cranking and engine operation.
l
When the ignition switch is set to START, current flows from the ignition switch through the MFI
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relay coil to ground. This turns on the MFI relay switch and drive power is supplied from the battery
through the MFI relay switch to the fuel pump.
While the engine is running, the engine control module keeps the power transistor on and energizes
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the MFI relay coil so that drive power is supplied to the fuel pump.
MULTIPORT
On-Vehicle Inspection of MFI
FUEL INJECTION - Components
Ignition switch (IG,)
Ignition switch (ST)
6 7 " 2"
8
module +I ',
Engine control module connector
TSB
Revision
B Equipment side
connector
Fuel
B Equipment side
connector
C F u e l pump 1
check
terminal harness
side connector