Nissan Altima 2007-2012 Service Manual: P2119 electric throttle control actuator

Description

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc.

The throttle control motor is operated by the ECM and it opens and closes the throttle valve.

The throttle position sensor detects the throttle valve position, and the opening and closing speed of the throttle valve and feeds the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE


DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

>> 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 shift lever to D (CVT) or 1st (M/T) position and wait at least 3 seconds.

3. Set shift lever to P (CVT) or Neutral (M/T) 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 shift lever to D (CVT) or 1st (M/T) position and wait at least 3 seconds.

7. Set shift lever to P (CVT) or Neutral (M/T) position.

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

9. Check DTC.

Is DTC detected? YES >> Go to EC-425, "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 shift lever to D (CVT) or 1st (M/T) position and wait at least 3 seconds.

3. Set shift lever to N, P (CVT) or Neutral (M/T) position.

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

5. Check DTC.

Is DTC detected? YES >> Go to EC-425, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1. Turn ignition switch OFF.

2. Remove the intake air duct.

3. Check if foreign matter is caught between the throttle valve (1) and the housing.

2. Electric throttle control actuator


Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 2.

NO >> Remove the foreign matter and clean the electric throttle control actuator inside.

2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator.

2. Go to EC-426, "Special Repair Requirement".

>> INSPECTION END

Special Repair Requirement

1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to EC-29, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement" >> GO TO 2.

2.PERFORM IDLE AIR VOLUME LEARNING

Refer to EC-30, "IDLE AIR VOLUME LEARNING : Special Repair Requirement" >> END

    P2118 throttle control motor
    Description The throttle control motor is operated by the ECM and it opens and closes the throttle valve. The current opening angle of the throttle valve is detected by the throttle position s ...

    P2122, P2123 APP sensor
    Description The accelerator pedal position sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the ECM. Acc ...

    Other materials:

    Startup display
    When the vehicle in placed in the ON or ACC position the screens that display in the vehicle information include: ● Active system status (if so equipped) ● Trip computer ● Tire pressure information (if so equipped) ● Fuel economy ● Warnings Warnings will only di ...

    P0603 ECM Power supply
    Description Battery voltage is supplied to the ECM even when the ignition switch is turned OFF for the ECM memory function of the DTC memory, the air-fuel ratio feedback compensation value memory, the idle air volume learning value memory, etc. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATI ...

    P0117, p0118 ect sensor
    Description The engine coolant temperature sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the ECM. The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change i ...