Operation CHARM
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Buick
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1985
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Riviera V6-231 3.8L Turbo VIN 9 FI
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Engine Control Module
Engine Control Module
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Description and Operation
Modes of Operation
Acceleration Mode
Battery Voltage Correction Mode
Clear Flood Mode (Port and TBI Injection)
Deceleration Mode
Run Mode
Starting Mode (Port and TBI Injection)
Port Fuel Injection
Testing and Inspection
Locations
ECM Wiring Harness
Electronic Control Module (ECM)
Service and Repair
Diagrams
Specifications
Technical Service Bulletins
