L-Jetronic

The Bosch L-Jetronic (also called AFC=Air Flow Controlled fuel injection) was put into US-spec Type 4s in the last model year (1974). While new carburated engines were used in the European markets, VW adapted the L-Jetronic for the Type 4 in the US due to more stringent emissions and fuel consumption regulations.

Contents

Introduction		Introduction to the L-Jetronic, tools needed to diagnose the system, fuel system description and wiring diagrams.
Troubleshooting		Step-by-step troubleshooting for common problems.
Components		Component testing instructions.
Test Chart		Test charts for individual components.