MPI <4G1> -
Troubleshooting
13A-40
INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS
INSPECTION PROCEDURE 1
Communication with MUT-
II
is not possible.
(Communication with all systems is not possible.)
Probable cause
The cause is probably a defect in the power supply system (including earth) for the
diagnosis line.
D
Malfunction of the connector
D
Malfunction of the harness wire
Measure at the diagnosis connector
(16-pin) B-18.
D
Voltage between 16 and earth
OK:
Battery voltage
NG
Check the following connectors:
B-67, B-74
NG
Repair
OK
check the trouble symptom.
NG
Check the harness wire between the
power supply and diagnostic connector
(16-pin), and repair if necessary.
OK
Measure at the diagnosis connector
(16-pin) B-18.
D
Continuity between 4 and earth
D
Continuity between 5 and earth
OK:
Continuity
NG
Check the harness wire between the
diagnostic connector (16-pin) and earth,
and repair if necessary.
OK
Replace the MUT-
II
.
INSPECTION PROCEDURE 2
MUT-
II
communication with engine-ECU is impossible.
Probable cause
One of the following causes may be suspected:
D
No power supply to engine-ECU.
D
Defective earth circuit of engine-ECU.
D
Defective engine-ECU.
D
Improper communication line between engine-ECU and MUT-
II
D
Malfunction of engine-ECU power supply circuit
D
Malfunction of engine-ECU
D
Open circuit between engine-ECU and diagnosis
connector
OK
Check the following connectors:
B-24 <Vehicles with immobilizer system>, B-32, B-35, B-38
NG
Repair
check the trouble symptom.
NG
Check the harness wire between engine-ECU and diagnosis con-
nector.
OK
Check the harness wire
between engine-ECU and
earth.
NG
Repair
NG
Repair
OK
Check the power supply and ignition switch-IG system.
(Refer to P.13A-59, INSPECTION PROCEDURE 25.)
NOTE
Though the above inspection has been performed, if trouble symptom does not disappear, check the
multi center display, and replace it if necessary.
Содержание Colt 2000
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Страница 30: ...NOTES ...
Страница 221: ...23 1 AUTOMATIC TRANSMISSION CONTENTS GENERAL 2 Outline of Changes 2 TROUBLESHOOTING 2 ...