Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 93

13D-28
Items
Stopping Run on
("Dieseling")
INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS
INSPECTION PROCEDURE 1
Communication with MUT-II is not possible.
(Communication with all systems is not possible.)
The cause is probably a defect in the power supply system (including earth) for the
diagnosis line.
Measure at the diagnostic connector
(16-pin) B-25.
D Voltage between 16 and earth
OK: Battery voltage
OK
Measure at the diagnostic connector
(16-pin) B-25.
D Continuity between 4 and earth
D Continuity between 5 and earth
OK: Continuity
OK
Replace the MUT-II.
INSPECTION PROCEDURE 2
MUT-II communication with engine-ECU <M/T> or
engine-A/T-ECU <A/T> is impossible.
One of the following causes may be suspected.
D No power supply to engine-ECU <M/T> or engine-A/T-ECU <A/T>.
D Defective earth circuit of engine-ECU <M/T> or engine-A/T-ECU <A/T>.
D Defective engine-ECU <M/T> or engine-A/T-ECU <A/T>.
D Improper communication line between engine-ECU <M/T> or engine-A/T-ECU
<A/T> and MUT-II
Check the following connectors:
B-04, B-14, B-25, B-52 <M/T>, B-111 <A/T>
Check trouble symptom.
Check the harness wire between engine-ECU <M/T> or engine-
A/T-ECU <A/T> and diagnosis connector.
Check the engine-ECU <M/T> or engine-A/T-ECU <A/T> power
supply and earth circuit system. (Refer to P.13D-49, INSPECTION
PROCEDURE 26.)
NOTE
On vehicles with multi center display, if a malfunction cannot be resolved after the procedure above, check the
multi center display and replace if necessary. (Refer to GROUP 54 - Multi center display.)
MPI -
Symptom
The condition in which the engine continues to run after the ignition switch is
turned to OFF. Also called "Dieseling".
NG
Check the following connectors:
B-66, B-91, B-92
Check trouble symptom.
NG
Check the harness wire between the
diagnostic connector (16-pin) and earth,
and repair if necessary.
OK
NG
OK
Troubleshooting
Probable cause
D Malfunction of the connector
D Malfunction of the harness wire
NG
OK
NG
Probable cause
D Malfunction of engine-ECU <M/T> or engine-A/T-ECU
<A/T> power supply circuit
D Malfunction of engine-ECU <M/T> or engine-A/T-ECU
<A/T>
D Open circuit between the engine-ECU <M/T> or
engine-A/T-ECU <A/T> and diagnosis connector
NG
Repair
NG
Repair
Repair
Check the harness wire between the
power supply and diagnostic connector
(16 pin), and repair if necessary.