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Component Description

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
Component part Description
TCM TCM supplies power to the starter relay inside the IPDM E/R when the selector lever is shifted to the P or N position.
BCM BCM sends a starter request signal to the CPU of the IPDM E/R over the CAN communication lines.
IPDM E/R CPU inside IPDM E/R operates the starter relay at the request of the BCM over the CAN communication lines.
Starter motor The starter motor plunger closes and the motor is supplied with battery power, which in turn cranks the engine, when the "S" terminal is supplied with electric power.