Operation CHARM
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Oldsmobile
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1987
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Firenza V6-173 2.8L
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Repair and Diagnosis
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Powertrain Management
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Relays and Modules - Powertrain Management
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Relays and Modules - Computers and Control Systems
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Engine Control Module
Engine Control Module
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Description and Operation
General System Description
Modes of Operation
Acceleration Mode
Battery Voltage Correction Mode
Clear Flood Mode (Port and TBI Injection)
Converter Protection Mode
Deceleration Mode
Fuel Cutoff Mode
Run Mode
Starting Mode (Port and TBI Injection)
Testing and Inspection
Locations
Service and Repair
Diagrams
With Speed Density Update
Part 1 of 2
Part 2 of 2
Without Speed Density Update
Part 1 of 2
Part 2 of 2
Specifications
Technical Service Bulletins
