Nissan Juke Service and Repair Manual : Turbocharger boost control

Turbocharger boost control : SystemDiagram

Turbocharger boost control : System Description


Turbocharger boost control : System Description

INPUT/OUTPUT SIGNAL CHART

SYSTEM DESCRIPTION


SYSTEM DESCRIPTION

Depending on driving conditions, the ECM performs ON/OFF duty control of the turbocharger boost control solenoid valve and controls the boost by adjusting the pressure to the diaphragm of the boost control actuator.

When driving conditions demand an increase in boost, the ECM prolongs the ON time of the turbocharger boost control solenoid valve and moves the boost control valve towards the closing direction by reducing the pressure in the diaphragm of the boost control actuator. The emission gas to the turbine wheel is then increased. When driving conditions demand a decrease in boost, the ECM shortens the ON time of the turbocharger boost control solenoid valve and moves the boost control valve towards the opening position by increasing the pressure in the diaphragm of the boost control actuator. The emission bypassing to the turbine wheel is then increased. Thus, by performing the most optimal boost control, the ECM improves engine output and response.

NOTE

:
The boost varies depending on the vehicle and driving conditions.

BOOST CONTROL ACTUATOR LINE DRAWING

1. Turbocharger


1. Turbocharger
2. Boost control actuator 3. Turbocharger boost control solenoid valve
4. Recirculation valve
5. Turbocharger boost sensor (with intake air temperature sensor 2)

Engine protection control at low engine oil pressure: Vehicle front


    Exhaust valve timing control
    Exhaust valve timing control : System Diagram Exhaust valve timing control: System Description INPUT/OUTPUT SIGNAL CHART SYSTEM DESCRIPTION This mechanism hydraulically controls cam phases c ...

    Engine protection control at low engine oil pressure
    Engine protection control at low engine oil pressure : System Diagram Engine protection control at low engine oil pressure : System Description INPUT/OUTPUT SIGNAL CHART SYSTEM DESCRIPTION • ...

    Other materials:

    Electric foldable door mirror does not operate
    Diagnosis Procedure 1.CHECK DOOR MIRROR (OPEN/CLOSE MOTOR) CIRCUIT Check door mirror (open/close motor) circuit. Refer to MIR-25, "Component Function Check". Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace the malfunctioning parts. 2.CONF ...

    Headlamp washer nozzle and tube
    Exploded View 1. Washer tank 2. Headlamp washer tube (tank side) 3. Headlamp washer tube RH 4. Headlamp washer nozzle connector RH 5. Headlamp washer nozzle bracket RH 6. Headlamp washer nozzle RH 7. Headlamp washer nozzle joint 8. Headlamp washer nozzle bracket LH 9. Headlamp washe ...

    Tire chains
    Use of tire chains may be prohibited according to location. Check the local laws before installing tire chains. When installing tire chains, make sure they are the proper size for the tires on your vehicle and are installed according to the chain manufacturer’s suggestions. Use only SAE Class ...