Operation CHARM
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Oldsmobile
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1992
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Ninety-Eight V6-3800 3.8L
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Cooling System
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Radiator Cooling Fan
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Radiator Cooling Fan Motor
Radiator Cooling Fan Motor
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Description and Operation
Testing and Inspection
Initial Inspection and Diagnostic Overview
System Check
Troubleshooting Hints
Component Tests and General Diagnostics
Component Diagnostic Tests
Test A: Coolant Fan Input Test
Test B: Low Speed Coolant Fan Input Test
Test C: High Speed Coolant Fan Input Test
Test D: LH Fan Runs In LO SPD W/Ign at Run, ENG Cool, A/C Off
Test E: LH Fan Runs In Hi SPD W/Ign at Run, ENG Cool, A/C Off
Test F: LH Fan Won't Run In Hi SPD W/A/C Head Press. > 210 PSI
System Diagnosis
Locations
LH Coolant Fan
RH Coolant Fan
Service and Repair
Diagrams
Diagram Information and Instructions
Cell References
Schematic Symbols
Wire Color Code Identification
Diagnostic Aids
Connector, Splicing and Terminal Repair
Pull-to-Seat Connectors
Push-to-Seat Connectors
General Troubleshooting Procedures
Basic Troubleshooting Guide
Checking Terminal Contacts
Intermittents and Poor Connections
Troubleshooting Tests
Troubleshooting Tools
Handling and Measuring Procedures
Wire Repair Procedures
Circuit Protection Devices
Typical Electrical Repair
Splicing Copper Wire Using Crimp and Seal Splice Sleeves
Splicing Copper Wire Using Splice Clips
Splicing Twisted/Shielded Cable
Electrical Diagrams
Technical Service Bulletins