Ecu Wiring 4afe Distributor Wiring Diagram //free\\ <Free • ANTHOLOGY>

The ignition switch triggers the EFI Main Relay, which sends 12V to the distributor's power pin.

The ECU (Engine Control Unit) is the brain of a modern vehicle's engine, responsible for monitoring and controlling various engine functions. One of the critical components of the ECU system is the wiring harness, which connects the ECU to various sensors, actuators, and other engine components. In this article, we will focus on the ECU wiring and 4AFE distributor wiring diagram, providing a detailed overview of the system, its components, and troubleshooting tips. ecu wiring 4afe distributor wiring diagram

This is the command wire from the ECU to the igniter (if external) or directly to the transistor inside the distributor. When the ECU calculates the ideal ignition advance (based on coolant temp, throttle position, airflow, and RPM), it sends a 5-volt square wave down the IGT wire. The igniter then responds by breaking the coil’s ground, generating the high-voltage spark. The ignition switch triggers the EFI Main Relay,