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Home >> Jaguar >> 2010 >> XFR >> Repair and Diagnosis >> External Pages >> Different car >> Section 128 (Electronic Engine Controls - GTDI 2.0L Petrol -- XF/X250) >> Electronic Engine Controls - GTDI 2.0L Petrol >> Description And Operation >> Electronic Engine Controls - System Operation And Component Description (G1550549) >> Description >> Turbine by-pass control actuator Valve

Turbine by-pass control actuator Valve

WARNING: This page is about a different car, the 2015 Jaguar XF, 2014 Jaguar XF, and 2013 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.
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The Turbine by-pass control actuator valve is attached to a bracket which is attached to the turbocharger compressor housing.

The solenoid valve is controlled by the ECM to control the turbocharger boost pressure using signals from the boost air pressure and temperature sensor. The ECM operates the valve using a 12V PWM signal to modulate the air pressure supplied to the turbine intake pressure actuator at a minimum of 20 Hz.

The Turbine by-pass control actuator valve is a three-way valve with three hose connections; the first hose discharges excess pressurized air from the pressure actuator into the air inlet to the turbocharger, the second hose receives pressurized air from the compressor housing and the third hose supplies pressurized air to the turbine intake pressure actuator. The valve connects the pressurized air from the compressor to either the pressure actuator or discharges the pressure into the turbocharger intake.

The ECM can monitor the solenoid valve operation and record DTC 's. The solenoid valve has a resistance value of 23 Ohms ± 1.2 Ohms.

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