When idling can be continued

If simulation function of M-MDS is used: 

1. Warm up the engine to normal operating temperature.
2. Connect the M-MDS to the DLC-2.
3. Verify that DTC P2090:00 or P2091:00 is displayed. (See DTC INSPECTION .)
   • Perform the DTC inspection. (See P2090:00 [PCM (SKYACTIV-G)] .) (See P2091:00 [PCM (SKYACTIV-G)] .)
4. Start the engine and let it idle.
5. Access the simulation item [VLV_TIMING_DSD_EX] using the M-MDS. (See SIMULATION INSPECTION .)
6. Increase the OCV duty value and verify that the engine idles rough or stalls.
   • If the engine idles rough or stalls, inspect the timing chain component (valve timing deviation). (Refer to HYDRAULIC VARIABLE VALVE TIMING ACTUATOR INSPECTION [SKYACTIV-G 2.0] in service information.)
   • If the engine does not idle rough or stalls, go to the next step.
7. Remove the OCV while the connector is connected. (Refer to OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [SKYACTIV-G 2.0] in service information.)
8. Switch the ignition ON (engine off).
9. Access the simulation item [VLV_TIMING_DSD_EX] using the M-MDS. (See SIMULATION INSPECTION .)
10. Increase the OCV duty value and verify that the spool valve operates in the retard direction.
    • If as specified, inspect the following hydraulic passage for restriction and/or leakage:
      • Oil pressure switch-OCV
      • OCV-Camshaft
      • Camshaft internal passage
    • If not as specified, inspect the following:
      • OCV operation (Refer to [OIL CONTROL VALVE (OCV) INSPECTION ] in service information.)
11. If they are normal, replace the hydraulic variable valve timing actuator. (Refer to ELECTRIC VARIABLE VALVE TIMING ACTUATOR, HYDRAULIC VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] in service information.)

If simulation function of M-MDS is not used: 

1. Disconnect the OCV connector. (Refer to OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [SKYACTIV-G 2.0] in service information.)
2. Warm up the engine and idle it.
3. Apply the battery voltage to the OCV and verify that the engine idles rough or stalls.
   • If the engine idles rough or stalls, inspect the timing chain component (valve timing deviation). (Refer to HYDRAULIC VARIABLE VALVE TIMING ACTUATOR INSPECTION [SKYACTIV-G 2.0] in service information.)
   • If the engine does not idle rough or stalls, go to the next step.
4. Remove the OCV and perform the Spool Valve Operation Inspection. (Refer to [OIL CONTROL VALVE (OCV) INSPECTION ] in service information.)
   • If not as specified, inspect the following:
     • OCV (Refer to [OIL CONTROL VALVE (OCV) INSPECTION ] in service information.)
     • Harnesses and connectors between OCV and PCM have an open or short circuit
   • If as specified, inspect the following hydraulic passages for restriction or leakage or both:
     • Oil pressure switch-OCV
     • OCV-Camshaft
     • Camshaft internal passage
5. If they are normal, replace the hydraulic variable valve timing actuator. (Refer to ELECTRIC VARIABLE VALVE TIMING ACTUATOR, HYDRAULIC VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] in service information.)