Powertrain Management: Description and Operation

The CIS-E (Bosch KE-Jetronic) fuel injection system is mechanically and electronically controlled. It uses the basic CIS (K-Jetronic) system for injection, with electronically controlled correction functions.
The mechanical portion of the CIS-E system consists of a mixture control unit (air flow meter and fuel distributor), control pressure regulator, auxiliary air valve, cold start valve, throttle body, injector nozzles, fuel pump and fuel filter.
The electronic portion of the system consists of an airflow sensor potentiometer, differential pressure regulator, thermo time switch, coolant temperature sensor, electronic control unit (ECU), transistorized ignition unit, throttle valve switches, altitude correction sensor, lambda control, and oxygen sensor.
The CIS-E system is designed to provide adequate operation in the event of an ECU malfunction. The system is also equipped with over-voltage protection for its more sensitive electronic components.