Electronic Control Unit (Ecu)
The ECU is located below glove box. It receives information from several inputs and/or sensors to determine engine operating conditions at any particular moment.
The ECU responds to these signals by sending a control signal to fuel injector, fuel pump, ignition control module, Idle Speed Actuator (ISA) Motor, EGR solenoid, and canister purge solenoid. It also controls the A/C clutch relay, the cold start relay (1.7L only), and on manual transaxle equipped models, the up-shift indicator lamp.