Mitsubishi FUEL Manual page 276

13I-82
From the previous page
Measure high fuel pressure between the fuel pump (high pressure)
and injector. (Refer to P.13I-122.)
Check ignition coil spark for each cylinder.
(1) Remove the ignition coil.
(2) Install a new spark plug to the removed ignition coil.
(3) Disconnect the injector intermediate connector.
Caution
Never touch the connector terminal as approx. 100 V is
applied to the injector, or you are seriously injured.
(4) Earth the spark plug electrode securely.
(5) Check that the spark plug ignites when the engine is cranked.
Check all the following items:
D Spark plug
D EGR system
D Compression pressure
D Clogged fuel filter, fuel line
INSPECTION PROCEDURE 14
The feeling of impact when accelerating
The cause is probably an ignition leak being generated in line with an increase in
the spark plug request voltage during acceleration.
MUT-II Self-Diag code
Is a diagnosis code displayed?
MUT-II Data list
79 Throttle position sensor (1st channel) (Refer to P.13I-98.)
Check ignition coil spark for each cylinder.
(1) Remove the ignition coil.
(2) Install a new spark plug to the removed ignition coil.
(3) Disconnect the injector intermediate connector.
Caution
Never touch the connector terminal as approx. 100 V is
applied to the injector, or you are seriously injured.
(4) Earth the spark plug electrode securely.
(5) Check that the spark plug ignites when the engine is cranked.
GDI -
OK
OK
OK
No
OK
Troubleshooting
NG
Repair
NG
Replace the ignition coil.
OK
Check trouble symptom.
Replace the injector.
Probable cause
D Malfunction of the ignition system
Yes
(Refer to P.13I-11, INSPECTION CHART FOR DIAGNOSIS
CODES.)
NG
Check the throttle valve position feedback system.
(Refer to P.13I-57, INSPECTION PROCEDURE FOR DIAGNOSIS
CODE P1221.)
OK
Check all the following items:
D Spark plug
D Ignition current leak
NG
Replace the ignition coil.
NG