MPI <4G6> -
Troubleshooting
13A-70
OK
Check trouble symptom.
NG
Replace the fuel pump.
OK
Check the following connector:
E-16
NG
Repair
NG
Check the harness wire between the
fuel pump and earth, and repair if neces-
sary.
Check trouble symptom.
NG
Repair
OK
(2) NG
Check the following connector:
E-11
NG
Check the harness wire between the
fuel pump relay and fuel pump, and
repair if necessary.
OK
Check trouble symptom.
(1) NG
Check the following connectors:
C-32, C-92, C-122, E-11
NG
Repair
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
NG
Replace the engine-ECU <M/T> or en-
OK
Check trouble symptom.
OK
Check the following connector:
NG
Repair
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
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.
Check trouble symptom.
NG
Repair
OK
NG
Check the following connector:
C-32
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
NG
Repair
OK
Check the ignition switch. (Refer to
GROUP 54 - Ignition Switch and Immo-
bilizer System.)
NG
Check the harness wire between the
fuel pump relay and ignition switch.
OK
Check trouble symptom.
NG
Check the following connectors:
C-92, C-105, C-131
NG
Repair
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
NG
Check the fuel pump relay. (Refer to
P.13A-90*.)
NG
Replace
MUT-
II
Actuator test
07 Fuel pump (Refer to P.13A-80.)
OK
Normal
NOTE:
*: Refer to the ’97 GALANT Workshop Manual (Pub. No. PWDE9611)
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