Tracker 4x4 L4-1.6L SOHC TBI (1994)
Engine Control Module: Description and Operation
The Electronic Control Module (ECM) is used to control the fuel system. The ECM receives input information from various sensors in order to control
the air/fuel ratio. The ECM sends a variable signal to the injector. This changes the "ON" and "OFF" time or pulse width of the injector. The fuel pump,
Torque Converter Clutch, and various other systems are controlled by the ECM.
NOTE: Whenever an ECM is diagnosed as being faulty, perform the ECM circuit resistance check. This check will prevent possible damage to the new
ECM.