Operation CHARM
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Oldsmobile
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1987
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Ninety-Eight V6-231 3.8L
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Repair and Diagnosis
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Heating and Air Conditioning
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Air Door
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Air Door Actuator / Motor
Air Door Actuator / Motor
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Description and Operation
Testing and Inspection
Initial Inspection and Diagnostic Overview
With Electronic Climate Control
Without Electronic Climate Control
Symptom Related Diagnostic Procedures
No Air From A/C Outlets
No Max A/C
Strong Air Flow From Defog Outlets
Strong Air Flow From Heater Outlets
Temperature Control Operates But Is Inaccurate
Temperature Selected Is Always Cold or Hot
Component Tests and General Diagnostics
Locations
Lower Mode Valve Vacuum Actuator
Outside Air Valve Vacuum Actuator
Upper Mode Valve Vacuum Actuator
Diagrams
Diagram Information and Instructions
Electrical Diagrams
