Diagnostic Procedure

STEP	INSPECTION		ACTION
1	PURPOSE: VERIFY IF MALFUNCTION CAUSED BY ABNORMAL FUEL Switch the ignition off. Drain the fuel and add the specified fuel. (See FUEL DRAINING PROCEDURE [SKYACTIV-G 2.0] .)	-	Go to the next step.
2	PURPOSE: VERIFY IF MALFUNCTION CAUSE WAS CORRECTED BY REFUELING Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC .) Perform the KOER self test. (See KOEO/KOER SELF TEST .) Is the same DTC present?	Yes	NOTE: A malfunction has occurred because carbon has accumulated in combustion chamber. Overhaul the engine and remove the carbon in the combustion chamber.Go to the next step.
2		No	Go to Step 4.
3	PURPOSE: VERIFY DTC TROUBLESHOOTING COMPLETED Always reconnect all disconnected connectors. Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC .) Perform the KOER self test. (See KOEO/KOER SELF TEST .) Is the same DTC present?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] .) Go to the next step.
3		No	Go to the next step.
4	PURPOSE: VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE .)
4		No	DTC troubleshooting completed.