Engine Controls - Basic Diagnostic Procedures

• Introduction
• Programming
  • Powertrain Control Module
    • Notes
    • Programming Powertrain Control Module
    • Updating Secret Key Data
• Preliminary Inspection & Adjustments
  • Visual Inspection
  • Mechanical Inspection
    • Notes
    • Compression
  • Checking Engine Vacuum
  • Checking Engine Mechanical Systems
• Fuel Systems
  • Notes
  • Fuel System Pressure Release
  • Fuel Pressure Test
    • Cherokee & Wrangler
    • Grand Cherokee
  • Fuel Pump Amperage Test
    • Cherokee
    • Grand Cherokee
    • Wrangler
  • Fuel Pump Volume Test
  • Fuel System Pressure Leak-Down Test
    • Cherokee & Wrangler
    • Grand Cherokee
  • Fuel Pump Control Circuit
    • Fuel Pump Relay
• Ignition Systems
  • Checking Secondary Ignition (2.5L)
  • Camshaft Position Sensor
  • Crankshaft Position Sensor
• No-Start Diagnosis
  • Engine Cranks But Does Not Start
    • Notes
    • Cherokee (2.5L)
    • Cherokee (4.0L)
    • Grand Cherokee
    • Wrangler (2.5L)
    • Wrangler (4.0L)
  • Engine Does Not Start & DRB Displays No Response
    • Notes
    • Cherokee
    • Grand Cherokee
    • Wrangler
• Verification Tests
  • Test VER-1
  • Test VER-2
• Summary