Engine Controls - Troubleshooting & Diagnosis

• Symptoms - Engine Controls
  • Important Preliminary Checks
    • Before Starting
  • Visual/Physical Check
• Intermittent Conditions
• Hard Start
• Surges/Chuggles
• Lack of Power, Sluggishness or Sponginess
• Detonation/Spark Knock
• Hesitation, Sag, Stumble
• Cuts Out, Misses
• Poor Fuel Economy
• Poor Fuel Fill Quality
• Rough, Unstable or Incorrect Idle and Stalling
• Dieseling, Run-On
• Backfire
• Malfunction Indicator Lamp (MIL) Inoperative
  • Circuit Description
    • Notes
    • Test Description
• Malfunction Indicator Lamp (MIL) Always On
  • Circuit Description
    • Notes
    • Diagnostic Aids
  • Test Description
• Engine Cranks but Does Not Run
  • Description
• Powertrain Relay Diagnosis
  • Circuit Description
• Supercharger Intercooler Relay Diagnosis
  • Circuit Description
• Fuel Pump Electrical Circuit Diagnosis
  • Circuit Description
• Fuel System Diagnosis
  • System Description
• Fuel Injector Coil Test
  • Circuit Description
  • Diagnostic Aids
• Fuel Injector Balance Test with Special Tool
  • System Description
    • Notes
    • Test Description
• Fuel Injector Balance Test with Tech 2
  • System Description
    • Notes
    • Test Description
• Fuel Injector Circuit Diagnosis
  • Circuit Description
  • Diagnostic Aids
• Fuel Tank Leak Test
  • Description
  • Diagnostic Aids
  • Test Description
• Alcohol/Contaminants-in-Fuel Diagnosis (w/o Special Tool)
  • Test Description
  • Alcohol in Fuel Testing Procedure
  • Particulate Contaminants in Fuel Testing Procedure
• Alcohol/Contaminants-in-Fuel Diagnosis (w/Special Tool)
  • Description
  • Test Procedure
• Boost Control System Diagnosis
  • Circuit Description
• Electronic Ignition (EI) System Diagnosis
  • Circuit Description
  • Diagnostic Aids
• Inspection/Maintenance (I/M) System Check
  • Description
  • Conditions for Updating the I/M System Status
  • Monitored Emission Control Systems
• Inspection/Maintenance (I/M) Complete System Set Procedure
  • Description
  • Conditions for Running
  • Test Description
• Inspection/Maintenance (I/M) System DTC Table
• Inspection/Maintenance (I/M) Catalyst System Set Procedure
  • Description
  • Conditions for Running
  • Diagnostic Aids
• Inspection/Maintenance (I/M) Evaporative Emission (EVAP) System Set Procedure
  • Description
  • Conditions for Running
  • Diagnostic Aids
• Inspection/Maintenance (I/M) Heated Oxygen Sensor/Oxygen Sensor (HO2S/O2S) System Set Procedure
  • Description
  • Conditions for Running
  • Diagnostic Aids
• Inspection/Maintenance (I/M) Heated Oxygen Sensor (HO2S) Heater System Set Procedure
  • Description
  • Conditions for Running
  • Diagnostic Aids