PL720 4WD L4-2389cc 2.4L SOHC (Z24) (1983)
Electronic Carburetor Control (ECC) Unit: Description and Operation
Fig. 3 ECC control unit
The ECC control unit, Fig. 3, consists of a microprocessor with input, output and power supply connectors and an exhaust gas sensor monitor lamp.
The control unit controls the feedback pulse width and fuel shutoff operation.