Mitsubishi FUEL Manual page 70

13A-70
MUT-II Actuator test
07 Fuel pump (Refer to P.13A-80.)
NG
Check the fuel pump relay. (Refer to
P.13A-90*.)
OK
Measure at fuel pump relay connector
C-32.
D Disconnect the connector, and
measure at the harness side.
D Voltage between terminals 3, 4 and
earth
(Ignition switch: ON)
OK: System voltage
OK
Measure at the engine-ECU
connector C-34 <M/T> or the
engine-A/T-ECU connector C-177
<A/T>.
D Disconnect the connector, and
measure at the harness side.
D Voltage between terminal 22<M/T>,
21 <A/T> and earth (Ignition switch:
ON)
OK: System voltage
OK
Measure at the engine-ECU
connector C-34 <M/T> or the
engine-A/T-ECU connector C-177
<A/T>.
D Disconnect the connector, and
measure at the harness side.
D Short circuit between terminal 22
<M/T>, 21 <A/T> and earth (Ignition
switch: ON)
OK: The fuel pump operates (its
operation sound can be
heard).
NG
Measure at fuel pump connector E-16.
D Disconnect the connector, and
measure at the harness side.
(1) Voltage between terminal 1 and
earth
(Ignition switch: ON)
OK: System voltage
(2) Continuity between 2 and earth
OK: Continuity
OK
Check the following connector:
E-16
OK
Check trouble symptom.
NOTE:
*: Refer to the '97 GALANT Workshop Manual (Pub. No. PWDE9611)
MPI <4G6> -
OK
Normal
NG
Replace
NG
Check the following connectors:
C-92, C-105, C-131
Check trouble symptom.
NG
Check the following connector:
C-32
OK
Check trouble symptom.
OK
Check the following connector:
C-34 <M/T>, C-177 <A/T>
Check trouble symptom.
(1) NG
Check the following connectors:
C-32, C-92, C-122, E-11
Check trouble symptom.
(2) NG
Check the following connector:
E-11
OK
Check trouble symptom.
NG
Repair
NG
Replace the fuel pump.
Troubleshooting
NG
OK
NG
NG
Repair
NG
NG
OK
NG
NG
OK
NG
NG
Repair
NG
Repair
Check the harness wire between the
fuel pump relay and ignition switch.
NG
OK
Repair
Check the ignition switch. (Refer to
GROUP 54 - Ignition Switch and Immo-
bilizer System.)
Check the harness wire between the
fuel pump relay and engine-ECU <M/T>
or engine-A/T-ECU <A/T>, and repair
if necessary.
Repair
Replace the engine-ECU <M/T> or en-
gine-A/T-ECU <A/T>.
Repair
Check the harness wire between the
fuel pump relay and fuel pump, and
repair if necessary.
Check the harness wire between the
fuel pump and earth, and repair if neces-
sary.