Engine Control System & Engine Component Tests - 4.0L Engine

• Introduction
• Computerized Engine Controls
  • Powertrain Control Module (Pcm)
    • Power & Ground Circuits
• Engine Sensors & Switches
  • Notes
  • Camshaft Position (CMP) Sensor
  • Crankshaft Position (CKP) Sensor
  • Engine Coolant Temperature (ECT) Sensor
  • Intake Air Temperature (IAT) Sensor
  • Manifold Absolute Pressure (Map) Sensor
  • Oxygen Sensor
    • Heating Element
  • Park/Neutral Switch
    • AW-4 Automatic Transmission
    • 30RH, 42RE & 42RH Automatic Transmission
  • Throttle Position (TP) Sensor
  • Vehicle Speed Sensor
• Modules, Motors & Relays
  • Motors
    • Idle Air Control (IAC) Motor
  • Relays
    • Radiator (Cooling) Fan Relay
    • Relay & Starter Motor Relay
• Fuel System
  • Fuel Delivery
  • Fuel Control
    • Fuel Injectors
• Ignition System
  • Timing Control Systems
• Emission Systems & Sub-Systems
  • Positive Crankcase Ventilation (PCV)
    • PCV Valve
  • Fuel Evaporation
    • EVAP Canister
• Wiring Diagrams
  • CHEROKEE
  • Grand CHEROKEE