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Audi 1.8T User Manual

Audi 1.8T
61 pages
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Table of Contents

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Audi 1.8T Specifications

General IconGeneral
BrandAudi
Model1.8T
CategoryAutomobile
LanguageEnglish

Summary

Learning Objectives

Course Learning Objectives

Outlines the skills and knowledge technicians will gain from the engine management course.

Introduction to the Basics

Role of Engine Management

Explains the evolution and purpose of engine management systems.

Four-Stroke Engine Operation

Details the mechanical process of a four-stroke internal combustion engine.

Charge Air Path Overview

Describes the components of the air intake system in naturally aspirated and turbocharged engines.

Variable Intake Manifold

Explains the function and types of variable intake manifolds used in Audi engines.

Turbocharger

Introduces turbochargers, their function, and how they increase engine power.

Fuel Delivery

Outlines the components and function of the fuel delivery system.

Fuel Pressure Regulator

Details how the fuel pressure regulator maintains consistent fuel pressure.

Air/Fuel Mixture Formation

Explains the optimal air/fuel ratio and how it's controlled using oxygen sensors.

System Adaptation

Discusses how the ECM adapts fuel mixture based on sensor inputs and fuel trim.

Ignition Systems

Covers the function and components of ignition systems in Audi vehicles.

Emissions Systems

Introduces various emissions control systems and their functions.

Oxygen Sensors and Catalytic Converters

Explains the role of oxygen sensors and catalytic converters in emissions control.

OBD II Diagnostics

Details the On-Board Diagnostics II standard and its monitored systems.

Workshop Tools and Safety

Safety Warnings and Precautions

Highlights general safety precautions and warnings for workshop procedures.

AESIS Information System

Explains the functionality and organization of the Audi Electronic Service Information System (AESIS).

Scan Tool Overview and Usage

Introduces the VAS5051/VAG1551 scan tools and their operating modes.

Motronic System Components and Operation

Motronic System Architecture and Components

Outlines Motronic ECM inputs, outputs, sensors, actuators, and interconnections.

System Authority by Operating Condition

Explains sensor influence on fuel mixture under different operating conditions.

Fault Generation and Diagnosis Techniques

ECM Fault Recognition

Describes how the ECM identifies failure conditions like high input, low input, and implausible signals.

Sensor and Actuator Monitoring

Details exercises on monitoring sensor and actuator circuits for fault generation.

Measuring Value Blocks for Diagnosis

Introduces using scan tool display groups to view and diagnose operating parameters.

System Specific Procedures and Testing

Fuel Delivery System Testing

Outlines critical tests for fuel pressure and volume to diagnose driveability issues.

Ignition System Troubleshooting

Covers primary and secondary circuit troubleshooting for ignition systems.

Mixture Control and Oxygen Sensors

Explains oxygen sensor voltage relation to air/fuel ratio and its effect on emissions.

Emissions Systems Overview

Introduces various emissions control systems and their functions.

Readiness Code Procedures

Explains readiness codes and methods for setting them to verify repairs.

Turbocharger System Operation

Explains how turbochargers use exhaust gas energy to increase air intake and engine power.

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