Electronic Control Unit (Ecu) Operation

The ECU consists of a microcomputer, inspection lights, a diagnostic mode selector (or on/off switch), connectors and wiring or signal input, signal output and power supply. See Figure . The unit is not serviceable and should not be opened. Monitor lights are provided on side of unit so system operation can be checked. The control unit contains memory and logic circuits that enable it to interpret sensor inputs and control various engine systems. The ECU is located under the passenger seat.