Fuel Injector Operation Inspection

If simulation function of M-MDS is used:

STEP	INSPECTION		ACTION
1	Start the engine and warm it up completely. Access the INJ_1, INJ_2, INJ_3 and INJ_4 PIDs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST .) Turn each fuel injector from on to off using the PIDs for each cylinder. Perform the Main Relay Operation Inspection. (See MAIN RELAY OPERATION INSPECTION .) Does the main relay' properly?	Yes	Fuel injectors work properly.
1		No	Engine speed does not drop an any cylinder: Go to the next step. Engine speed drops on some cylinders: Go to the Step 45.
2	Perform the Main Relay Operation Inspection. (See MAIN RELAY OPERATION INSPECTION .) Does the main relay work properly?	Yes	Go to the next step.
2		No	Repair or replace the malfunctioning part according to the inspection results.
3	Inspect the fuel injector of the suspected cylinder. (See FUEL INJECTOR INSPECTION .) Is there any malfunction?	Yes	Replace the fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION .)
3		No	Inspect the fuel injector power and/or ground systems related wiring harness and connectors for the suspected cylinder. If all items normal: Replace the PCM. (See PCM REMOVAL/INSTALLATION .) If not: Repair or replace the malfunctioning part according to the inspection results.
4	Perform the KOER self test using the M-MDS. (See KOEO/KOER SELF TEST .) Are the DTCs P0201:00, P0202:00, P0203:00 and/or P0204:00 present?	Yes	Go to the appropriate DTC inspection. (See DTC P0201:00 [PCM (SKYACTIV-G 2.5T)] .) (See DTC P0202:00 [PCM (SKYACTIV-G 2.5T)] .) (See DTC P0203:00 [PCM (SKYACTIV-G 2.5T)] .) (See DTC P0204:00 [PCM (SKYACTIV-G 2.5T)] .)
4		No	Go to the next step.
5	Inspect the fuel injector of the suspected cylinder. (See FUEL INJECTOR INSPECTION .) Is there any malfunction?	Yes	Replace the fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION .)
5		No	Inspect the following for the suspected cylinder: PCM terminals (pulled-out pins, corrosion) Fuel injector terminals (pulled-out pins, corrosion) If all items normal: Replace the PCM. (See PCM REMOVAL/INSTALLATION .) If not: Repair or replace the malfunctioning part according to the inspection results.

If simulataion function of M-MDS is not used:

STEP	INSPECTION		ACTION
1	Inspect the fuel injector of the suspected cylinder. (See FUEL INJECTOR INSPECTION .) Is there any malfunction?	Yes	Replace the fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION .)
1		No	Go to the next step.
2	Inspect the following for the suspected cylinder: Fuel injector power and/or ground system related wiring harnesses and connectors PCM terminals (pulled-out pins, corrosion) Fuel injector terminals (pulled-out pins, corrosion) Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results.
2		No	Replace the PCM. (See PCM REMOVAL/INSTALLATION .)