Charge Air Pressure Actuator - V465-, Checking: General Description

The Engine/Motor Control Module -J623- computes the nominal charge pressure from the requested torque. If the actual charge pressure deviates from the nominal charge pressure, the wastegate* is opened further by the Charge Air Pressure Actuator -V465- (charge pressure decreases) or closed further (charge pressure increases). The rapid response of the Charge Air Pressure Actuator -V465- ensures that the wastegate opens quickly in overrun mode, thereby reducing the pumping effort of the turbocharger. The wastegate is closed in the start position. The Charge Air Pressure Actuator -V465- is activated by the PWM signal, and the Charge Air Pressure Actuator Position Sensor -G581- provides position feedback.

Special tools and workshop equipment required 

• Multimeter.
• Wiring Diagram.
• Scan Tool.

Test requirements 

• Fuses OK.
• Battery voltage OK.
• Switch OFF all electrical and electronic accessories.
• Vehicles with automatic transmission, ensure the selector lever position is in "P".
• Vehicles with manual transmission, ensure the shifter lever position is in "N" with the parking brake applied.
• Observe all safety precautions: SAFETY PRECAUTIONS .
• View clean working conditions: CLEAN WORKING CONDITIONS .