DEF Control Module

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.

The DEF control module communicates and shares information with the ECM. Using input from the ECM and other sensors, the control module controls the operation of the DEF pump assembly, including the DEF heating systems.

Courtesy of NISSAN NORTH AMERICA, INC.