Signal Path

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.

ECM performs the glow control according to an IGN ON signal, water temperature signal, and engine speed signal. ECM transmits a glow indicator lamp signal to the combination meter in quick preheat mode via CAN communication.
The combination meter turns ON the glow indicator lamp according to a glow indicator lamp signal received from ECM via CAN communication.