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Engine Control Module: Description and Operation
Diagnostic Functions

Diagnostic functions

Overview

See:  Overview See: Powertrain Management/Computers and Control Systems/Description and Operation/Engine Control Module (ECM)/Overview 

Misfire diagnostic

See:  Misfire diagnostic See: Powertrain Management/Computers and Control Systems/Description and Operation/Misfire Diagnostic 

Camshaft diagnostics (CVVT)

See:  Camshaft diagnostics (CVVT) See: Powertrain Management/Computers and Control Systems/Description and Operation/Camshaft Diagnostics
(CVVT) 

Leak diagnostics (certain markets only)

See:  Leak diagnostics (certain markets only) See: Powertrain Management/Computers and Control Systems/Description and Operation/Leak Diagnostics
(Certain Markets Only) 

Heated oxygen sensor (HO2S) diagnostic

See:  Heated oxygen sensor (HO2S) diagnostic See: Powertrain Management/Computers and Control Systems/Description and Operation/Heated
Oxygen Sensor (HO2S) Diagnostic 

Three-way catalytic converter (TWC) diagnostics

See:  Three-way catalytic converter (TWC) diagnostics See: Powertrain Management/Computers and Control Systems/Description and
Operation/Three-Way Catalytic Converter (TWC) Diagnostics 

Fuel pressure regulation, diagnostics

See:  Fuel pressure regulation, diagnostics See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel Pressure
Regulation, Diagnostics 

Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component Information > Description and Operation > System Overview > Page 910

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