MPI <4G1> -
Troubleshooting
13A-60
INSPECTION PROCEDURE 26
Fuel pump system
Probable cause
The engine-ECU turns the fuel pump relay ON when the engine is cranking or running,
and this supplies power to drive the fuel pump.
D
Malfunction of the fuel pump relay
D
Malfunction of the fuel pump
D
Improper connector contact, open circuit or
short-circuited harness wire
D
Malfunction of the engine-ECU
NG
Check the harness wire between the
fuel pump relay and ignition switch con-
nector.
Repair
OK
Check the ignition switch.
(Refer to GROUP 54 - Ignition Switch
and Immobilizer System.)
NG
Repair
OK
Check the trouble symptom.
OK
OK
Check the trouble symptom.
NG
Check the harness wire between the
fuel pump and earth, and repair if neces-
sary.
OK
Check the trouble symptom.
NG
OK
Check the trouble symptom.
OK
Check the fuel pump relay.
(Refer to P.13A-83*.)
NG
Replace
OK
Check the harness wire between fuel
pump relay connector and fuel pump,
and repair if necessary.
Check the fuel pump operation.
(Refer to P.13A-81*.)
NG
Measure at the fuel pump connector
D-14.
D
Disconnect the connector, and
measure at the harness side.
D
Continuity between 2 and earth
OK:
Continuity
NG
Check the following connectors:
D-04, D-14
NG
Repair
OK
Check the following connectors:
B-12, B-33, D-04, D-14
NG
Check the harness wire between the
fuel pump relay and fuel pump connec-
tor.
NG
Repair
OK
Replace the fuel pump.
Measure at the fuel pump relay connec-
tor B-12.
D
Connect the connector.
D
Voltage between 1 and earth
D
MUT-
II
Actuator test:
Fuel pump
drive
OK:
System voltage
NG
Measure at the fuel pump relay connec-
tor B-12.
D
Disconnect the connector, and
measure at the harness side.
D
Voltage between 4 and earth
(Ignition switch: ON)
OK:
System voltage
NG
Check the following connectors:
B-32, B-70
OK
Check the following connector:
B-12
NG
Repair
NG
Check the harness wire between the
engine-ECU and the fuel pump relay,
and repair if necessary.
NG
OK
Check the following connector:
B-37
Repair
OK
Check the trouble symptom.
NG
Replace the engine-ECU.
Measure at the engine-ECU connector
B-37.
D
Disconnect the connector, and
measure at the harness side.
D
Voltage between 22 <Vehicles with
immobilizer system>, 8 <Vehicles
without immobilizer system> and
earth (Ignition switch: ON)
OK:
System voltage
NG
NG
Repair
NOTE:
*: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).
Содержание Colt 2000
Страница 7: ...11A 1 ENGINE CONTENTS ENGINE 4G1 11A ENGINE 4G9 11B ...
Страница 30: ...NOTES ...
Страница 221: ...23 1 AUTOMATIC TRANSMISSION CONTENTS GENERAL 2 Outline of Changes 2 TROUBLESHOOTING 2 ...