Fuel Pump Operation Check - Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement

Fuel pump
module
Battery
GDI –
On-vehicle Service
(9) If the engine is started, release fuel pressure by the
following procedure:
1) Turn off the ignition switch, and then stop the engine.
2) Disconnect one of the ignition coil connectors.
3) Crank the engine for at least two seconds.
4) If the engine can not be started, use the MUT-II to
make sure that the fuel pressure is 0.5 MPa or less.
Then turn off the ignition switch.
5) If the engine is started, stop it by racing and use the
MUT-II to make sure that the fuel pressure is 0.5
MPa or less. Then turn off the ignition switch.
6) Reconnect the ignition coil connector.
Caution
Clean the spark plug which corresponds to the
disconnected ignition coil connector.
(10)Remove the MUT-II.
(11)Reconnect the fuel pump module connector.
(12)Install the protector and rear seat assembly.

FUEL PUMP OPERATION CHECK

1. Check the operation of the fuel pump by using the MUT-II
to force-drive the fuel pump.
2. If the fuel pump will not operate, check by using the
following procedure, and if it is normal, check the drive
circuit.
(1) Turn the ignition switch to OFF.
(2) Remove the rear seat assembly. (Refer to GROUP
52A.)
(3) Remove the protector.
(4) Disconnect the fuel pump module connector. Listen
to a fuel pump operation sound while connecting
battery voltage to No.4 terminal of the fuel pump
module, and No.5 terminal to earth.
(5) Check fuel pressure by pinching the fuel hose with
your finger.
(6) Connect the fuel pump module connector.
(7) Install the protector and rear seat assembly.
13A-103