Operation CHARM
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Pontiac
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1990
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Bonneville V6-3800 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
Automatic Climate Controls
Manual Climate Controls
Testing and Inspection
Initial Inspection and Diagnostic Overview
System Check
System Diagnosis
Troubleshooting Hints
Automatic Climate Controls
Manual Climate Controls
Symptom Related Diagnostic Procedures
Table 1
Table 2
Table 3
Component Tests and General Diagnostics
Automatic Climate Controls
Test A: Air Mix Valve Feedback Test
Test C: Air Valve Test
Test D: Programmer Motor Test
Test E: In-Car Temperature Sensor Test
Test F: Ambient Temperature Sensor Test
Manual Climate Controls
Adjustments
Locations
Component Locations
Mode Valve Vacuum Actuator
Actuator (A/C Defrost)
Automatic Climate Controls
Manual Climate Controls
Actuator (Mode)
Automatic Climate Controls
Manual Climate Controls
Actuator (Outside Air Valve)
Automatic Climate Controls
Manual Climate Controls
Actuator (Slave)
Harness Locations
Automatic Climate Controls
Dual Zone Climate Controls
Service and Repair
Actuator (A/C Defrost)
Actuator (Mode)
Actuator (Outside Air Valve)
Actuator (Slave)
Valve (Air Mixture)
Diagrams
Diagram Information and Instructions
Cell References
Schematic Symbols
Symbol Identification
Wire Color Code Identification
Diagnostic Aids
Pull-to-Seat Connectors
Push-to-Seat Connectors
Electrical Diagrams
Part 1 of 3
Part 2 of 3
Part 3 of 3
Vacuum and Vapor Hose Diagrams
Automatic Climate Controls
Manual Air Conditioning
Description and Operation
Testing and Inspection
Adjustments
Locations
Service and Repair
DiagramsDescription and OperationTesting and InspectionAdjustmentsLocationsService and RepairDiagrams