Diagnosis Procedure

1. Turn ignition switch ON.
2. Connect CONSULT and check for current and past "ENGINE" diagnostic trouble codes.
3. Check for DTC P226C-00 "current" or "past" on the CONSULT screen.

Is applicable DTC current?

YES

GO TO 2 .

NO

Refer to Intermittent Incident .

1. Turn ignition switch OFF.
2. Disconnect the rotary turbine control valve actuator.
3. Inspect connector for the following:
   • Loose connector.
   • Corroded pins.
   • Bent or broken pins.
   • Pushed back or expanded pins.
   • Moisture in or on the connector.
   • Missing or damaged connector seals.
   • Dirt or debris on or in the connector pins.
   • Connector shell broken.
   • Wire insulation damage.
   • Damaged connector locking tab.

Is the inspection result normal?

YES

GO TO 3 .

NO

Repair or replace error-detected parts.

1. Start the engine.
2. Measure the voltage at the rotary turbine control valve actuator between power terminal 4 and ground terminal 1.

   Rotary turbine control valve actuator			Voltage (V) (Approx.)
   Connector	Terminal (+)	Terminal (-)
   F146	4	1	Battery voltage

Is the inspection result normal?

YES

GO TO 4 .

NO

• Repair or replace harness for an open circuit.
• GO TO 7 .

1. Turn ignition switch OFF.
2. Reconnect the rotary turbine control valve actuator.
3. Turn ignition switch ON.
4. Using CONSULT, select ENGINE and perform the "RTCV Hysteresis Test" under "Active Test".

Did RTCV Hysteresis Test pass?

YES

GO TO 6 .

NO

GO TO 5 .

1. Disconnect the rotary turbine control valve actuator linkage.
2. Using CONSULT, select ENGINE and perform the "RTCV Hysteresis Test" under "Active Test".

Did RTCV Hysteresis Test pass?

YES

GO TO 6 .

NO

• Replace the rotary turbine control valve actuator. Refer to Removal and Installation .
• GO TO 9 .

Inspect the rotary turbine control valve actuator linkage.

Is the linkage broken or damaged?

YES

• Replace the rotary turbine control valve actuator linkage. Refer to Exploded View .
• GO TO 7 .

NO

GO TO 8 .

1. Connect all components and harness connectors.
2. Using CONSULT, select "ENGINE" and perform the "RTCV actuator calibrate" under "Work Support".

Did RTCV actuator calibration test pass?

YES

GO TO 8.

NO

• Replace the rotary turbine control valve actuator. Refer to Removal and Installation .
• GO TO 9 .

1. Connect all components and harness connectors.
2. Using CONSULT, erase ENGINE diagnostic trouble codes.
3. Start the engine and operate under normal driving conditions for at least 15 minutes.
4. Using CONSULT, check for current ENGINE diagnostic trouble codes.

Is P226C-00 DTC current?

YES

• A turbocharger mechanical malfunction has been detected. Replace the turbocharger assembly. Refer to Removal and Installation .
• GO TO 9 .

NO

GO TO 9 .

Perform the following snap acceleration test:

1. Connect all components and harness connectors.
2. Engage the parking brakes
3. Place the shift lever in (N) neutral.
4. start the engine and let it idle to reach normal operating temperature.
5. Rapidly depress the accelerator pedal from 0 to 100% multiple times.
6. Check for black smoke exiting the exhaust as the engine accelerated from low to high idle.
   NOTE: If there is a heavy buildup of exhaust residue and a snap acceleration does not reveal the condition outlined, perform a brief acceleration under partial or full load. White smoke due to condensation in the exhaust system is permissible.

Was visible black or gray smoke seen from the exhaust?

YES

• Replace the damaged after treatment system. Refer to Removal and Installation .
• GO TO 10 .

NO

GO TO 10 .

1. Turn the engine OFF.
2. Turn ignition switch ON.
3. Using CONSULT, erase ENGINE diagnostic trouble codes.
4. Operate the engine within the "Conditions for Clearing the DTC".
5. Using CONSULT, check for current ENGINE diagnostic trouble codes.

Is P226C-00 DTC current?

YES

Diagnosis procedure needs to be repeated. Go to DTC Description .

NO

Repair complete.