Failure code Description
P0302 Irregular ignition detected - cylinder 2
P0303 Irregular ignition detected - cylinder 3
P0304 Irregular ignition detected - cylinder 4
Confirming the driving configuration
1. Connect the diagnostic tester DS-21 or OBD II general scanning device with the ignition switch set
to OFF.
2. Record the diagnostic failure code and the frozen image data with the ignition switch set to ON.
3. Clear the diagnostic failure code.
4. Use the diagnostic tester DS-21 or OBD II general scanning device to set "Continuous monitoring
results" of the CARB mode.
5. Ride the vehicle at a constant speed many times, with load and related parameters indicated by
ENGINE RPM.CALC LOAD in the frozen image data or MISFIRE RPM, MISFIRE LOAD in the data
list. If malfunctions are detected, code P0314 is displayed (press F1 key:) If there is no diagnostic tester
DS-21 available, set the ignition switch to OFF after the indication is simulated for the first time. Then,
repeat the simulation process.
TO STORE THE DIAGNOSTIC FAILURE CODE RELATED TO IRREGULAR IGNITION, RUN THE
ENGINE ACCORDING TO MISFIRE RPM, MISFIRE LOAD VALUES INDICATED IN THE DATA LIST
DURING THE TIME INDICATED BELOW.
Engine speed Time
Idle speed 3 minutes 30 seconds or more
1000 rpm 3 minutes or more
2000 rpm 1 minute 30 seconds or more
3000 rpm 1 minute or more
6. Check if there is an irregular ignition by monitoring the diagnostic failure code and the frozen image
data. Then, record the data.
7. Set the ignition switch to OFF after at least 5 seconds.
WARNING
CARRY OUT THE CONFIRMATION TEST ACCORDING TO THE INSTRUCTIONS INDICATED IN
THE SECT. ''USING THE OBD II GENERAL SCANNING DEVICE OR DIAGNOSTIC TESTER DS-21''
Iniection System PORTER 1.3 16V
IS - 486
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