GM Cadillac Deville_Fleetwood_ELD_Seville 1990-1998

ELECTRONIC ENGINE CONTROLS

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NOTE
When the term Powertrain Control Module (PCM) is used, it will refer to the engine control computer regardless that it may be called a Powertrain Control Module (PCM) or Engine Control Module (ECM).

The PCM is designed to maintain exhaust emission levels to Federal or California standards, while providing excellent driveability and fuel efficiency. Review the component sections and wiring diagrams to determine which systems are controlled by each specific control module. The control module monitors numerous engine and vehicle functions and controls the following operations.



Fuel control
 
Ignition control (IC)
 
Knock Sensor (KS) system
 
Automatic Transaxle shift functions
 
Cruise Control Enable
 
Generator
 
Evaporative Emission (EVAP) Purge
 
A/C Clutch Control
 
Cooling Fan Control
 

 
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