Key Topics Covered:

1. Fuel Injection Control Strategies

   • Understanding of Mass Air Flow (MAF)-centric, Speed-Density, and Hybrid sensor strategies used in modern vehicles.
   • Insight into ECU input weighting and how fuel injection is managed by the control module.

2. Intake Sensors and Their Failures

   • Detailed coverage of MAF and MAP sensor types, their operation principles, common faults such as contamination and sensor drift, and testing methods.

3. Oxygen Sensors and Air/Fuel Ratio Control

   • In-depth study of narrow-band and wide-band oxygen sensors, including their operation, response monitoring techniques, and their role in adjusting fuel trims.
   • Explanation of diagnostic trouble codes related to oxygen sensors and how to interpret sensor data effectively for fault finding.

4. Fuel Trims and Injector Control

   • Understanding of Short-Term Fuel Trim (STFT) and Long-Term Fuel Trim (LTFT) concepts and their influence on fuel injector pulse width.
   • Methods to read, interpret, and reset fuel trims for more accurate diagnostics.
   • Types of fuel injectors covered: Port Fuel Injection, Direct Petrol Injection, and Dual Injection.

5. Diagnostic Application and Real-World Case Study

   • A practical diagnostic procedure on a 2014 VF Commodore with common fuel trim-related fault codes (P0172, P0175).
   • Step-by-step approach including DTC review, freeze frame data examination, fuel pressure and sensor checks, fuel quality testing, and injector balance testing.
   • Use of scan tools and OEM diagnostic procedures to isolate and verify fuel injector faults and sensor responsiveness.
   • Final diagnostic conclusions and repair recommendations supported by empirical data.

Workshop Objectives:

• Equip technicians with the ability to analyze and diagnose air/fuel ratio issues using sensor data and vehicle monitoring parameters.
• Develop skills to interpret fuel trims and oxygen sensor outputs for identifying fuel system and driveability faults.
• Improve confidence in testing and verifying fuel injectors and adaptive ECU fuel control strategies.
• Enhance understanding of OEM diagnostic procedures and how to apply them effectively in workshop scenarios.

Benefits for Attendees:

• Greater accuracy and efficiency in diagnosing emissions and driveability complaints linked to air/fuel control systems.
• Better understanding of ECU adaptive behaviours and sensor monitoring strategies.
• Improved capability to perform tests that ensure fuel system components operate within specification.
• Practical exposure to case studies that demonstrate a logical and data-driven approach to complex diagnostics.

This advanced workshop uses a blend of theory, sensor operation, fuel trim analysis, sensor and injector testing, and OEM diagnostics to offer comprehensive upskilling for technicians involved in modern vehicle diagnosis and repair .