Output Signals

The control unit processes information from the input signals and sends appropriate voltage control signals to the following engine controls. For theory and operation of specific output components, refer to system indicated in brackets.

• Automatic Transmission Lock-up Relay (Transmission Control)
• "CHECK ENGINE" Light (Self-Diagnostics)
• Control Relay (Control Unit and Fuel Delivery)
• EGR Solenoid (Emissions)
• Fuel-Cut System (Fuel Control)
• Idle Speed Control (ISC) Solenoid (Idle Speed)
• Injector(s) (Fuel Control)
• PTC (Mixture Heater) Relay (Emissions)
• Throttle Opener Solenoid (Idle Speed)