Operation CHARM
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Geo Truck
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1997
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Tracker 4x2 L4-1.6L VIN 6
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Repair and Diagnosis
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Powertrain Management
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Emission Control Systems
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Exhaust Gas Recirculation
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EGR Control Solenoid
EGR Control Solenoid
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Testing and Inspection
EGR Solenoid Vacuum Valve Check
EGR Bypass Valve Check
Locations
Component Locations
Connector Locations
Service and Repair
EGR Solenoid Vacuum Valve Replacement
EGR Bypass Valve Replacement
Diagrams
Diagram Information and Instructions
Abbreviation
Cell References
Electrostatic Discharge (ESD Sensitive Devices)
On Board Diagnostics II (OBDII) Symbol
Schematic Symbols
Supplemental Inflatable Restraint (SIR) System
Wire Color Code Identification
Wire Size Conversion Table
Diagnostic Aids
General Troubleshooting Procedures
Additional Information
Basic Knowledge Required
Checking Terminal Contacts
Detecting Electrical Intermittents
Digital Multimeter (Dmm) Connections
Intermittents and Poor Connections
Troubleshooting Tests
Aftermarket Accessories
Probing (Frontprobe & Backprobe)
Testing For Voltage
Testing For Continuity
Testing For Voltage Drop
Testing For Short to Ground
Troubleshooting Tools
Test Light/Digital Voltmeter
Connector Test Adapters
Fused Jumper Wire
Short Finder
Self-Powered Test Light
Ohmmeter
Special Tools
Wire Repair Procedures
Circuit Protection Devices
Circuit Breakers
Fuses
Fusible Links
General Information
Typical Electrical Repair Procedures
Diode Replacement
General Information
Gmspo Service Parts
Heated Oxygen Sensor (HO2S) Repair
Obdii Circuit Repairs
Repairing Connectors
General Information
Push-to-Seat and Pull-to-Seat Connectors
Weather Pack(R) Connectors
Repairing Short Circuits Caused By Damaged Wire Insulation
Splicing Instructions
Splicing Copper Wire Using Crimp and Seal Splice Sleeves
Splicing Copper Wire Using Splice Clips
Splicing Twisted/Shielded Cable
Terminal Repairs
Electrical Diagrams