Turbocharger (TC) Control Valve
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 (Volvo scan tool).
The turbocharger (TC) control valve is on a hose between the intake manifold and the pressure servo for the turbocharger.