Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC PRIORITY
1. Turn ignition switch ON.
2. Connect CONSULT and check for "ENGINE" diagnostic trouble codes.
3. Check for DTCs U010C-00, P00AF-00 or P2262-00 being current on the CONSULT screen.
Is applicable DTC detected?

YES

Refer to DTC Index .

NO

GO TO 2 .
INSPECT ROTARY TURBINE CONTROL VALVE ACTUATOR AND CONNECTOR PINS
1. Turn ignition switch OFF.
2. Disconnect the rotary turbine control valve actuator connector F146.
3. Inspect the harness and actuator connector pins 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.
RUN THE TURBINE BYPASS VALVE ACTUATOR CALIBRATION
1. Reconnect the rotary turbine control valve actuator connector F146.
2. Turn ignition switch ON.
3. Using CONSULT, connect to "ENGINE" and perform the "RTCV actuator calibrate" under Work Support.
RTCV actuator calibration process completed successfully?

YES

GO TO 4 .

NO

Replace the rotary turbine control valve actuator. Refer to Exploded View .
PERFORM ACTIVE TEST
Using CONSULT, connect to "ENGINE" and perform the "RTCV Hysteresis Test" under Active Test.

Did the RTCV Hysteresis Test pass?

YES

Refer to Intermittent Incident .

NO

GO TO 5 .
CHECK TURBOCHARGER TURBINE ACTUATOR LINKAGE
CAUTION: If the rotary turbine control valve linkage is only removed from the actuator side, the rotary turbine control valve linkage can be reattached to the actuator and reused. If the rotary turbine control valve linkage is removed from the turbine valve shaft, the rotary turbine control valve linkage must be replaced.
1. Turn ignition switch OFF.
2. Inspect the linkage on the turbocharger for damage.
Is the linkage broken or damaged?

YES

Replace the turbine actuator linkage. Refer to Exploded View .

NO

GO TO 6 .
CHECK TURBINE ACTUATOR LINKAGE MOVEMENT
Rotate the turbocharger turbine actuator linkage from stop to stop by hand. Check for smooth movement between stops.

NOTE: There will be an initial friction force that must be overcome before the actuator linkage will move. Once the movement is started, actuator linkage must move to the other stop position by hand.

Does the linkage rotate from stop to stop

YES

Replace the rotary turbine control valve actuator. Refer to Exploded View .

NO

Replace the turbocharger assembly. Refer to Removal and Installation .