Engine Controls - Theory & Operation
- Introduction
- Air Induction System
- Computerized Engine Controls (Gasoline)
- Notes
- Electronic Control Module (ECM)
- Input Devices
- Notes
- A/C On (A/C Request) Signal
- Battery Voltage
- Brake Switch Feedback
- Coolant Temperature Sensor (CTS)
- Crankshaft Position Sensor
- Cranking Signal
- Digital Ratio Adapter Controller (DRAC)
- Fuel Pump Feedback
- Gear Switches
- Knock Sensor
- Manifold Absolute Pressure (MAP) Sensor (Except 3.8L)
- Manifold Air Temperature (MAT) Sensor (2.5L & 4.3L Turbo)
- Mass Airflow (MAF) Sensor (3.8L)
- Oxygen (O2) Sensor
- Park/Neutral (P/N) Switch
- Power Steering (P/S) Pressure Switch (2.5L)
- Pressure Switch Manifold (PSM) (4L60-E & 4L80-E Transmission)
- RPM Reference Signal
- Throttle Position (TP) Sensor
- Transmission Temperature Sensor (TTS) (4L60-E & 4L80-E Transmission)
- Vehicle Speed Sensor (VSS)
- Output Signals
- Notes
- A/C Clutch Relay
- Air Injection Control Solenoid
- Charge Air Cooler Pump Relay (4.3L Turbo)
- Computer Controlled Coil Ignition (C(3)I)
- Cooling Fan Relay (3.1L & 3.8L)
- SERVICE ENGINE SOON Light
- EGR Control Solenoid Valve
- ESC Timing Retard
- EVRV Solenoid
- Fuel Injectors
- Fuel Module
- Fuel Pump & Fuel Pump Relay
- HEI-EST Ignition
- Idle Air Control (IAC) Valve
- Self-Diagnostics
- Serial Data
- Shift Solenoids (4L60-E & 4L80-E Transmission)
- Torque Converter Clutch
- Transmission Shift Light (Manual Transmission)
- Turbo Boost Relay (4.3L Turbo)
- Wastegate Solenoid (4.3L Turbo)
- Computerized Engine Controls (Diesel)
- Fuel System (Gasoline)
- Fuel System (Diesel)
- Ignition System (Gasoline)
- Ignition Timing Control Systems (Gasoline)
- Emission Systems (Gasoline)
- Emission Systems (Diesel)
- Self-Diagnostic System
- Miscellaneous ECM Controls