Component Parts: BCM

BCM controls ENGINE START FUNCTION, NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS (NATS) and VEHICLE SECURITY SYSTEM.

BCM performs the ID verification between BCM and key. If the ID verification result is OK, ignition switch operation is available.

Then, when the power supply position is turned ON, BCM performs ID verification between BCM and ECM. If the ID verification result is OK, ECM can start engine.