Operation CHARM
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Oldsmobile
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1987
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Cutlass Ciera Cruiser V6-173 2.8L
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Repair and Diagnosis
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Relays and Modules
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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
Checking Control Module For Bad Solder Joints
ECM Diagnosis
Locations
Service and Repair
Diagrams
With Speed Density
Part 1 of 2
Part 2 of 2
Without Speed Density
Part 1 of 2
Part 2 of 2
Specifications
Technical Service Bulletins
