Engine Controls - Theory & Operation
- Introduction
- Computerized Engine Controls
- Powertrain Control Module (Pcm)
- Pcm Inputs
- Pcm Outputs
- Input Signals
- Notes
- Auto Shutdown (ASD) Relay
- Battery Voltage
- Brake Switch
- Camshaft Position Sensor (2.5L)
- Camshaft Position Sensor (4.0L)
- Camshaft Position Sensor (4.7L)
- Crankshaft Position (CKP) Sensor
- 5-Volt Supply
- Fuel Level Sensor
- Engine Coolant Temperature (ECT) Sensor
- Extended Idle Switch
- Oxygen (O2) Sensor
- Ignition Circuit Sense
- Intake Air Temperature (IAT) Sensor
- Manifold Absolute Pressure (MAP) Sensor
- Oil Pressure Sensor
- Power Steering Pressure Switch (PSPS)
- Throttle Position (TP) Sensor
- Vehicle Speed Sensor (VSS)
- Output Signals
- Notes
- A/C Compressor Clutch Relay
- Automatic Shutdown (ASD) Relay
- Cruise Control Servo
- Evaporative (EVAP) Emission System
- Fuel Injectors
- Fuel Pump Relay
- Generator Field
- Generator Light
- Idle Air Control (IAC) Motor
- Ignition Coil
- Injection Timing
- Malfunction Indicator Light (MIL)
- Radiator Cooling Fan Relay
- Serial Communication Interface (SCI) Transmit
- Upshift Indicator Light (M/T)
- Fuel System
- Ignition System
- Hall Effect System
- Notes
- Engine Coolant Temperature (ECT) Sensor
- Crankshaft Position (CKP) Sensor
- Distributor (Cherokee & Wrangler)
- Ignition Coil (Cherokee & Wrangler)
- Ignition Coils (Grand Cherokee)
- Intake Air Temperature (IAT) Sensor
- Manifold Absolute Pressure (MAP) Sensor
- Powertrain Control Module (PCM)
- Throttle Position (TP) Sensor
- Hall Effect System
- Emission Systems & Sub-Systems
- Self-Diagnostic System
- Miscellaneous Controls