Nissan Maxima Service and Repair Manual: P1615 diffrence of key

P1612 chain of ECM-IMMU

Description BCM performs the ID verification with ECM that allows the engine to start. Start the engine if the ID is OK. ECM prevents the engine from starting if the ID is not registered. BCM st ...

B2190 nats antenna AMP.

Description Performs ID verification through BCM and Intelligent Key when push-button ignition switch is pressed. Prohibits the start of engine when an unregistered ID of Intelligent Key is us ...

Other materials:

Multifunction switch 
Removal and Installation  REMOVAL Remove cluster lid D. Refer to IP-10, "Exploded View". Remove the four multifunction switch screws (A) and remove the multifunction switch (2) from cluster lid D (1). : Metal clip  INSTALLATION Installation is in the reverse order of r ...

Precaution
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELTPRE-TENSIONER" The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used alongwith a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for c ...

Intake Manifold
Removal and Installation Intake manifold Intake manifold gaskets  Refer to INSTALLATION REMOVAL WARNING: To avoid the danger of being scalded, do not drain the coolant when the engine is hot. Release the fuel pressure. Refer to EC-592, "Inspection". Disconnect the ba ...