Mitsubishi FUEL Manual page 128

13A-128
Code No. P0300 Ignition coil (power transistor) system
Range of Check
D Engine speed is 500 - 3,500 r/min.
D While the engine is running except deceleration and sudden acceleration.
Set Conditions
D The number of misfires exceeds a predetermined number per 200 engine
revolutions (Misfire has occurred in two cylinders or more).
or
D The number of misfires exceeds a predetermined number per 100 engine
revolutions (Misfire has occurred in two cylinders or more).
MUT-II Data list
22 Crank angle sensor (Refer to P.13A-176.)
D Crank angle sensor waveform check
D Engine speed: Stable
OK: Constant pulse range
Check the injector (Refer to P.13A-197*.)
Check the following connectors:
B-02, B-05, B-40, B-03, B-36, B-44, B-43
Check the harness wire between the engine-ECU and the injector
connector.
MUT-II Data list
81 Long-term fuel compensation (bank 1) (Refer to P.13A-176.)
MUT-II Data list
82 Short-term fuel compensation (bank 1) (Refer to P.13A-176.)
MUT-II Data list
83 Long-term fuel compensation (bank 2) (Refer to P.13A-176.)
MUT-II Data list
84 Short-term fuel compensation (bank 2) (Refer to P.13A-176.)
MUT-II Data list
21 Engine coolant temperature sensor (Refer to P.13A-176.)
Check the following items.
D Check the ignition coil, spark plugs, spark plug cables.
D Check the compression pressure.
D Check the timing belt for jumping teeth.
D Check the EGR system and EGR valve.
NOTE:
*: Refer to the '97 GALANT Workshop Manual (Pub. No. PWDE9611)
MPI <6A1> -
OK
OK
OK
OK
OK
OK
OK
OK
OK
Troubleshooting
Probable cause
D Malfunction of the ignition system
D Poor crank angle sensor signal
D Incorrect air/fuel ratio
D Abnormal compression
D Engine coolant temperature sensor failed
D Timing belt teeth jumped
D Malfunction of the injector
D Malfunction of engine-ECU
NG
Check the following
connector: B-77
OK
Check the harness wire
between the engine-ECU
and the crank angle sen-
sor connector.
OK
Check if the crank angle
sensor and sensing plate
are installed properly.
OK
Replace the crank angle
sensor.
NG
Replace
NG
Repair
NG
Repair
NG
NG
Check the abnormal fuel system (bank 1)
(Refer to P.13A-125, INSPECTION PROCEDURE FORDIAGNOS-
TIC TROUBLE CODE P0170.)
NG
NG
Check the abnormal fuel system (bank 2)
(Refer to P.13A-126, INSPECTION PROCEDURE FORDIAGNOS-
TIC TROUBLE CODE P0173.)
NG
Check the engine coolant temperature sensor system
(Refer to P.13A-106, INSPECTION PROCEDURE FORDIAGNOS-
TIC TROUBLE CODE P0115.)
NG
Repair
NG
Repair
NG
Repair