Engine Controls - System/Component Tests - 2.5L

• Introduction
• Electronic Control Unit (Ecu)
  • Notes
  • Ground Circuits
  • Power Circuits (2.5L)
• Closed Throttle (Idle) Switch Test
  • Notes
  • Functional Test
• Coolant Temperature Sensor (Cts) Test
  • Resistance Test
• Crankshaft Position Sensor (Cps) Test
  • Resistance Test
• Knock Sensor
  • Functional Test
• Manifold Absolute Pressure Sensor
  • Functional Test
• Manifold Air/Fuel Temperature Sensor
  • Resistance Test
• Oxygen (O2) Sensor Heating Element
  • Notes
  • Resistance Test (CHEROKEE & COMANCHE)
  • Resistance Test (Wrangler)
• Throttle Position Sensor (TPS)
  • Functional Test
• Wide-Open-Throttle (Wot) Switch
  • Functional Test (Wrangler)
• Fuel Delivery
• Idle Speed Test
  • Notes
  • Idle Speed Actuator (ISA) Motor Test
• Sync Pulse (Stator)
  • Notes
  • Functional Test
• Evaporative Fuel System
• Exhaust Gas RECIRCULATION (EGR) System
  • EGR Solenoid Vacuum Test
  • EGR Valve Vacuum Test
  • EGR Valve Opening Test
  • EGR Valve Closing Test
  • EGR Transducer Vacuum Test
• Positive Crankcase Ventilation (PCV) System
  • System Test
• Thermostatic Air Cleaner System
  • Air Valve Vacuum Motor Test