Operation CHARM
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Buick
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1992
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Riviera V6-231 3.8L VIN L SFI
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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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Relays and Modules - Computers and Control Systems
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Body Control Module
Body Control Module
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Description and Operation
Testing and Inspection
Initial Inspection and Diagnostic Overview
Diagnostic Messages
Brake Telltale
Door Ajar Light
Hot Coolant Light
Key In Ignition Warning Chime
Lights on Chime
Low Oil Level Light
Low Oil Pressure Telltale
Seat Belt Telltale and Chime
Washer Fluid Light
Self System Check
Reading and Clearing Diagnostic Trouble Codes
Clearing Diagnostic Trouble Codes
Reading Diagnostic Trouble Codes (DTCS)
Trouble Code Diagnosis
Component Tests and General Diagnostics
Chart A Blank Odometer Display
Chart B Odometer Display "Error" (Loss of Serial Data)
Chart B-1 BCM Power and Grounds
Chart C ECCP Display Problem (Loss of ECCP Communication)
Chart D-1 Ground Serial Data Circuit
Chart D-2 Serial Data Circuit Shorted to Voltage
Locations
Service and Repair
Diagrams
Technical Service Bulletins
