Engine Controls - Theory & Operation
- Introduction
- Computerized Engine Controls
- Electronic Concentrated Engine Control System (ECCS)
- Engine Control Module (ECM)
- Malfunction Indicator Light (Mil)
- Input Devices
- Notes
- Engine Coolant Temperature Sensor (ECTS)
- Crankshaft Position Sensor (CKPS)
- EGR Temperature Sensor (California)
- Fuel Temperature Sensor (J30)
- Heated Oxygen Sensor (HO2S)
- Knock Sensor (KS)
- Mass Airflow Sensor (MAFS)
- Neutral Position Switch (M/T)/Inhibitor Switch (A/T) (G20)
- Inhibitor Switch (A/T) (J30)
- Park/Neutral Relay (Q45)
- Power Steering Oil Pressure Switch
- Sub-Crankshaft Position Sensor (Q45)
- Throttle Position Sensor (TP) & Soft/Hard Closed Throttle Position (CTP) Switch (G20 A/T Serial No. 450021 & Later, J30 & Q45)
- Throttle Position Sensor (TP) & Soft Closed Throttle Position (CTP) Switch (G20 A/T Before Serial No. 450021 & M/T)
- Vehicle Speed Sensor (VSS)
- Output Signals
- Notes
- A/C Relay
- Canister Purge Control Solenoid (G20 & Q45)
- Condenser Fan Control Relay (J30)
- EGR Valve (G20)
- EGR Control Solenoid (J30 & Q45)
- ECCS Relay
- Fuel Injectors
- Fuel Pressure Regulator
- Fuel Pump Control Unit (J30 & Q45)
- Fuel Pump Relay (J30 & Q45)
- Idle Air Control Valve (IACV)-Air Regulator (G20 & J30)
- IACV-Auxiliary Air Control (AAC) Valve
- IACV-Fast Idle Control Device (FICD) Solenoid Valve (G20 &
- Ignition Coil Relay (J30 & Q45)
- Heated Oxygen Sensor (HO2S) Heater
- Malfunction Indicator Lamp (MIL)
- Pulsed Secondary Air Injection (PAIR) Valve (G20, If Equipped)
- Pulsed Secondary Air Injection Control Solenoid Valve (G20, If Equipped)
- Power Transistor(s) & Ignition Coil(s)
- Pressure Regulator Vacuum Relief (PRVR) Control Solenoid Valve (J30)
- Radiator Fan Relay (G20)
- Self-Diagnostic System
- Valve Timing Control (VTC) Solenoids (J30 & Q45)
- Fuel System
- Ignition System
- Emission Systems
- Self-Diagnostic System
- Miscellaneous Controls