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:

Communication signal circuit
Description Detects door open/close condition. Diagnosis Procedure 1.CHECK FRONT DOOR SWITCH INPUT SIGNAL Turn ignition switch OFF. Disconnect sunshade motor assembly connector. Turn ignition switch ON. Check signal between sunshade motor assembly harness connector and ground with os ...

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

Removal and Installation
REMOVAL Disconnect the battery negative terminal. Refer to PG-67, "Removal and Installation (Battery)". Disconnect the harness connector from the accelerator position sensor. Remove the three accelerator pedal nuts. Remove the accelerator pedal and accelerator position sensor assembl ...