Section 31 (Engine Controls - Introduction - (Hybrid)): Preface

This service information provides a step-by-step approach for diagnosing driveability, emission, powertrain and hybrid-electric control system symptoms. Before beginning diagnosis, it may be helpful to reference any Technical Service Bulletins (TSBs) information when this is available.

This service information is used in conjunction with the SYSTEM WIRING DIAGRAMS. Refer to the appropriate SYSTEM WIRING DIAGRAMS for vehicle specific wiring information and component, connector and splice locations.

The following is a description of the information contained in each of the ENGINE PERFORMANCE articles. .