Powertrain Management: Description and Operation

Flow Of Diagnosis:

PURPOSE

Modern computer management systems regulate a variety of subsystems and accessories. Since computer management is complex, it is helpful to divide information into sub-categories as explained below.

INFORMATION STRUCTURE

Information in TRANSMISSION CONTROL SYSTEMS, FUEL DELIVERY AND AIR INDUCTION, EMISSION CONTROL SYSTEMS and GLOW PLUG SYSTEMS for diesel engines is divided into the following four major topics:

Transmission Control System

Addresses the on-board computer system and components as related to vehicle management. Consult this section for information regarding on-board diagnostics, sensor inputs, computer outputs, etc.

Emission Controls

Addresses emission related systems and components only. Includes (but is not limited to) Exhaust Gas Recirculation (EGR) systems, Evaporative Emission (EVAP) systems, Positive Crankcase Ventilation (PCV) systems, Exhaust Emission controls, Air Injection Systems (AIS), etc.

Fuel Systems

Focuses on systems and components related to fuel and intake air delivery. Does NOT include information regarding electronic engine controls.

Engine Control System
The 6.5L turbo diesel engine has no engine control system.