Rodeo (4WD) V6-3165cc 3.2L SOHC (6VD1) (1993)
Engine Control Module: Description and Operation
Inputs And Outputs
PURPOSE
Control unit of fuel injection system.
OPERATION
It constantly looks at information from various sensors, and controls systems that affect vehicle performance. The Engine Control Module (ECM)
also performs diagnostic function of system. It can recognize operational problems, alert driver through "Check Engine" light, and store a code or
codes which identify problem areas to aid technician in making repairs.
ECM supplies either 5 or 12 volts to power various sensors or switches and controls output circuits such as fuel injectors, Idle Air Control (IAC)
valve, A/C clutch relay, etc. by controlling ground circuit through transistors or a "quad-driver".