Dtc Description

DTC Description

DTC DETECTION LOGIC

POSSIBLE CAUSE

Electric throttle control actuator

FAIL-SAFE

Engine Control System

Engine operating condition in fail-safe mode
Fail safe mode		Nissan Sentra Vehicle behavior
Traveling control mode	Accelerator angle variation control	ECM controls the accelerator pedal depression speed to make it slower than actual speed. This causes a drop in accelerating performance and encourages the driver to repair malfunction. Note: ECM does not control the accelerator pedal releasing speed.
	Engine output control 1	ECM reduces the engine output, according to the rise in engine speed. This reduces the Nissan Sentra vehicle speed to encourage the driver to repair malfunction. Driving at 70 km/h (44 MPH) or more is possible. Note: This value is a reference value converted from engine power to Nissan Sentra vehicle speed. Actual power limitation value differs due to the malfunctioning part and driving condition.
Device fix mode		This mode fixes the electric IVT motor and the EVT control solenoid valve in the reference position. The intake manifold runner control valve motor is turned OFF (intake manifold runner control valve opens). The Intake manifold runner control valve motor is turned OFF (Intake manifold runner control valve opens).

Idle Start/Stop System

When a DTC is detected, the start/stop indicator lamp blinks slowly and the idle start/stop system operation is prohibited.

When ECM detects error while operating the idle start/stop system, ECM restarts the engine.

Confirmation Procedure

Confirmation Procedure

1. PRECONDITIONING

   If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

   1. Turn ignition switch OFF and wait at least 10 seconds.

   2. Turn ignition switch ON.

   3. Turn ignition switch OFF and wait at least 10 seconds.

   >>

   GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A AND B

   1. Turn ignition switch ON and wait at least 1 second.

   2. Set selector lever to 1st position and wait at least 3 seconds.

   3. Set selector lever to neutral position.

   4. Turn ignition switch OFF and wait at least 10 seconds.

   5. Turn ignition switch ON and wait at least 1 second.

   6. Set selector lever to 1st position and wait at least 3 seconds.

   7. Set selector lever to neutral position.

   8. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.

   9. Check DTC.

   Is DTC detected?

   YES >>

   Proceed to DTC Diagnosis Procedure.

   NO >>

   GO TO 3.

3. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION C

   1. Turn ignition switch ON and wait at least 1 second.

   2. Set selector lever to 1st position and wait at least 3 seconds.

   3. Set selector lever to neutral position.

   4. Start the engine and let it idle for 3 seconds.

   5. Check DTC.

   Is DTC detected?

   YES >>

   Proceed to DTC Diagnosis Procedure.

   NO-1 >>

   To check malfunction symptom before repair: Refer to Intermittent Incident.

   NO-2 >>

   Confirmation after repair: INSPECTION END

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

   1. Turn ignition switch OFF.

   2. Remove the intake air duct. Refer to Removal and Installation.

   3. Check if foreign matter is caught between the throttle valve and the housing.

      

   Is the inspection result normal?

   YES >>

   GO TO 2.

   NO >>

   Remove the foreign matter and clean the electric throttle control actuator inside, then perform throttle valve closed position learning. Refer to Work Procedure.

2. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

   Replace electric throttle control actuator. Refer to Removal and Installation.

   >>

   INSPECTION END