Engine Controls - Tests W/Codes - 5.8L

• Introduction
• Description
• Operation
  • Microprocessor Control Unit (MCU)
  • Engine Sensors
    • Coolant Temperature
    • Vacuum Switches
    • Oxygen Sensor
    • Engine Speed
    • Knock Sensor
    • Barometric Pressure Sensor
    • Self-Test Connector
  • Engine Controls
    • Notes
    • Thermactor Controls
    • Air/Fuel Controls
    • Canister Purge Solenoid
    • Throttle Kicker
    • Ignition Control
• Diagnosis & Testing Information
• Preparation For Testing
• Function Tests
  • Key On Engine Off (KOEO) Test
  • Engine Running Test
• Code-To-Component Applications Menu
• Non-Code Tests
  • Notes
  • No Start Test
  • No Self-Test Output
  • Spark Knock Sensor Test
• Circuit Test Instructions
• Code 12 - Idle Speed Incorrect
• Code 25 - Knock Detection System
• Code 41 - Lean Fuel Mixture
• Code 42 - Rich Fuel Mixture
• Code 44 - THERMACTOR System
• Code 45 - THERMACTOR Air Diverter
• Code 46 - THERMACTOR Air By-Pass
• Codes 51 & 55 - Open Zone Vacuum Switch
• Codes 53 & 54 - Temperature Switch Open
• Code 62 - Barometric Pressure Switch
• Code 65 - Closed Zone Vacuum Switch
• Wiring Diagrams
• Summary