Engine Controls - Basic Testing

• Introduction
• Preliminary Inspection & Adjustments
  • Visual Inspection
  • Mechanical Inspection
    • Compression
    • Exhaust System Backpressure
    • Diagnosis
• A-3, No-Start Diagnosis
  • Notes
  • Engine Controls - Basic Testing
    • Definition
    • General Inspection
    • Ignition System
    • Fuel System (TBI)
    • Fuel System (4.3L Turbo PFI)
• Chart A-4, Injector Circuit Diagnosis
  • 2.5L
    • Circuit Description
    • Test Description
  • All Except 2.5L & Models W/4L80-E Transmission
    • Circuit Description
    • Test Description
  • Models With 4L80-E Transmission
    • Circuit Description
    • Test Description
• A-7, Basic Fuel System Checks (Gasoline)
  • Fuel System Pressure Relief
    • Model 700 TBI Unit (2.5L)
    • Model 220 TBI Unit (Except 2.5L)
    • Port Fuel Injection (4.3L Turbo)
  • Fuel System Pressure Test
    • Notes
    • TBI
    • PFI (4.3L Turbo)
  • Field Service Mode Check
• Basic Fuel System Checks (Diesel)
  • Fuel Pump Flow Test
  • Fuel System Pressure Test
• C-4, Basic Ignition System Checks (Gasoline)
  • HEI-Est Distributor
    • Notes
    • Spark
    • Ignition Coil Power Source
    • Ignition Coil Resistance (Externally Mounted)
    • Ignition Coil Resistance (Internally Mounted)
    • Distributor Pick-Up Coil Short & Resistance Checks
    • TACH Pulse (RPM) Signal
• Idle Speed & Ignition Timing (Gasoline)
• Diagnostic Circuit Check (Gasoline)
  • Notes
  • A-1, Service Engine Soon Light Inoperative
  • A-2, Service Engine Soon Light Always On Or Won't Flash Code 12
• Diagnostic Circuit Check (Diesel)
  • Notes
  • Diagnostic Procedure
    • Preliminary Inspection
    • Diagnostic Procedure
• Summary