Turbocharger (TC) control valve

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2007 Volvo V70, 2006 Volvo V70, 2005 Volvo V70, 2004 Volvo V70, and 2003 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Turbocharger Control Valve

Courtesy of VOLVO CARS OF NORTH AMERICA.

The turbocharger (TC) control valve is used to open/close the connection between the intake manifold and the pressure servo for the turbocharger (TC). The valve controls the pressure servo which affects the boost pressure control (BPC) valve and therefore the boost pressure. Also see Turbocharger (TC) control system .

The valve is an electro-magnetic valve which is powered from the system relay. When the valve needs to be opened, it is grounded internally in the engine control module (ECM). The valve can be controlled steplessly by grounding the valve using a pulse width modulation (PWM) signal.

The valve is closed when in the standby position (open-circuit).

The turbocharger control valve can be diagnosed and can be activated using VIDA.

The turbocharger (TC) control valve is on a hose between the intake manifold and the pressure servo for the turbocharger.