Circuit Testing Procedures - Non-DTC-Based Diagnostics

• Warning
  • General Warnings
• Description
  • Circuit Functions
  • Circuit Information
• Diagnosis And Testing
  • Wiring Harness Testing
    • Troubleshooting Tools
    • Intermittent And Poor Connections
    • Troubleshooting Wiring Problems
• Standard Procedure
  • Check A 12-Volt Fused Battery B(+) Circuit For Voltage
    • Theory Of Operation
    • Possible Causes
    • Diagnostic Test
  • Check A 12-Volt Switched Battery B(+) Circuit For Voltage
    • Theory Of Operation
    • Possible Causes
    • Diagnostic Test
  • Check A 5-Volt Supply Circuit For Voltage
    • Theory Of Operation
    • Possible Causes
    • Diagnostic Test
  • Check A Circuit For A Short To Ground
    • Theory Of Operation
    • Possible Causes
    • Diagnostic Test
  • Check A Circuit For A Short To Voltage
    • Theory Of Operation
    • Possible Causes
    • Diagnostic Test
  • Check For An Open Ground Circuit
    • Theory Of Operation
    • Diagnostic Test
  • Check For A Short Between Multiple Circuits
    • Theory Of Operation
    • Possible Causes
    • Diagnostic Test
  • Check The Resistance Of A Circuit Using An Ohmmeter
    • Theory Of Operation
    • Possible Causes
    • Diagnostic Test
  • Check For Excessive Current Draw
    • Theory Of Operation
    • Possible Causes
    • Diagnostic Test
  • Circuit Load Testing Procedure
    • Notes
    • Theory Of Operation
    • Load Testing A Ground Circuit
    • Load Testing A Battery Or Ignition Feed Circuit
    • Load Testing A Battery Or Ignition Feed Circuit And Ground Circuit
    • Load Testing A Circuit For An Open Or High Resistance
  • Voltage Drop Test Procedure
    • Theory Of Operation
    • Possible Causes
    • Diagnostic Test
  • Electrostatic Discharge (ESD) Sensitive Devices
  • Wire Splicing
• Removal
  • Connector Terminal Removal
• Installation
  • Connector Terminal Installation