Output Signals

The ECU processes information from the input sensors and sends appropriate voltage control signals to control devices. Not all devices are used on all models. For theory and operation of specific output components, refer to system indicated in brackets.

• Airflow Meter Self-Cleaning (Hot-Wire Input Devices)
• Canister Purge Valve (Emission Systems)
• "CHECK ENGINE" Light (Self-Diagnostic System)
• Cold Start Valve (Fuel Control)
• Denotation (Knock) Sensor (Ignition System)
• Diagnostic Unit (Self-Diagnostics)
• EGR Control Solenoid Valve (Emission Systems)
• Oxygen Sensor Heater Control (Emission Systems)
• Fuel Injectors (Fuel Control)
• Fuel Pressure Regulator (Fuel Control)
• Fuel Pump Control (Fuel Delivery)
• Idle Valve (Idle Speed)
• Power Transistor & Ignition Coil (Ignition System)