volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Engine Control Module|Testing and Inspection > < Engine Control Module (ECM)J 623|Page 290
Page 1
background image

Engine Control Module: Description and Operation

Engine Control Module

 The ECM regulates fuel injection, throttle valve control module, oxygen sensor regulation, ignition, knock control, evaporative emission purge valve,
engine speed limitation through the fuel injectors or the power supply relay, as well as OBD functions.

Engine Control Module|Testing and Inspection > < Engine Control Module (ECM)J 623|Page 290