This comprehensive 68-page PDF file contains the official VAG Self-Study Program 403 (SSP 403), focused entirely on the development and mechanical function of the 2.0-liter TDI engine featuring Common Rail fuel injection. This engine represented a highly significant technological pivot for the Volkswagen Group. To meet increasingly strict emissions standards (Euro 5) and customer demands for better acoustic refinement, VW engineers finally retired the legendary “Pumpe Düse” (PD) unit injector system in favor of a much quieter, highly precise Common Rail system. This technical training manual is an indispensable resource for VAG technicians, diagnostic specialists, and TDI enthusiasts looking to fully understand this modern diesel architecture.
Please note: As a Self-Study Program, this document focuses on engineering design, structural layouts, and operational theory. It is not a step-by-step rebuild or workshop manual, though the foundational knowledge it provides is crucial for complex diagnostics on the Common Rail TDI platform.
This detailed technical training manual covers the following key engineering topics:
- Engine Mechanics and Block Architecture: A deep dive into the physical construction based heavily on the outgoing 2.0L PD TDI. It details the cylinder head, the toothed timing belt drive, and the specific integration of the balancer shaft module into the oil pan to significantly reduce engine vibration.
- Common Rail Fuel Injection: The core focus of the manual. It provides a complete, step-by-step breakdown of the high-pressure fueling system. It explains the operation of the high-pressure pump (capable of generating 1,800 bar), the fuel rail, and the incredibly precise Piezo injectors, which can fire up to five times per combustion cycle to smooth out diesel knock.
- Air Supply and Turbocharging: An overview of the forced induction system, detailing the intake manifold with integrated, electronically controlled swirl flaps to optimize combustion at low speeds, and the Variable Turbine Geometry (VTG) turbocharger.
- Engine Management and Emissions Control: A comprehensive look at the Bosch EDC 17 engine management system. Crucially, it explains the complex exhaust gas treatment required for Euro 5 compliance, detailing the operation of the Exhaust Gas Recirculation (EGR) cooler, the oxidation catalytic converter, and the Diesel Particulate Filter (DPF).
- Diagnostics and Sensors: The manual concludes with an overview of the specific sensors used by the ECU, including the critical exhaust gas temperature and pressure differential sensors required for DPF regeneration.
Whether you are trying to map the flow of the high-pressure fuel system, diagnosing a fault in the intake swirl flap motor, or simply want to understand how Piezo injectors work, SSP 403 is the definitive technical resource.
CONTENTS
- In Brief
- Engine Mechanics
- Engine Management
- Service
- Test Yourself
Language: English
Format: PDF
Pages: 68
