Fuel Consumption

Pin 8 on the control module receives data about fuel injection. If the car is equipped with Motronic, this signal comes directly from the lead to injector 3. If the car is equipped with Trionic, the signal is generated by the Trionic control module which then feeds it to the Electronic Display Unit (EDU) control module.

Irrespective of which engine management system the car is equipped with, the EDU control module calculates fuel consumption by measuring the length of the input signal pulses.