Nissan Juke Service and Repair Manual : Turbocharger boost control
Turbocharger boost control : SystemDiagram
Turbocharger boost control : System Description
INPUT/OUTPUT SIGNAL CHART
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
2. Boost control actuator
3. Turbocharger boost control solenoid
valve
4. Recirculation valve
5. Turbocharger boost sensor
(with intake air temperature sensor 2)
: 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 ...
Window washer fluid
To fill the window washer fluid reservoir, lift the cap and pour the window washer
fluid into the reservoir opening.
Add a washer solvent to the washer for better cleaning. In the winter season,
add a windshield washer antifreeze. Follow the manufacturer’s instructions for the
mixture ratio ...
Door lock operation warning does not operate
Diagnosis Procedure
1.CHECK DOOR LOCK FUNCTION
Check door lock function.
Does door lock/unlock using door request switch?
YES >> GO TO 2.
NO >> Refer to DLK-256, "Component Function Check".
2.CHECK INTELLIGENT KEY WARNING BUZZER
Check Intelligent Key warning buzzer ...