Sentra L4-1597cc 1.6L SOHC (E16S) (1985)
Electronic Carburetor Control (ECC) Unit: Description and Operation
Electronic Controlled Carburetor (ECC)
Fig. 7 ECC control unit
The ECC control unit, Fig. 7, consists of a microprocessor with input, output and power supply connectors and an exhaust gas sensor monitor lamp.
On some models, a barometric pressure sensor is installed in the control unit to correct mixture ratio according to elevation.