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:

Signal buffer system
System Diagram System Description OUTLINE BCM has the signal transmission function that outputs/transmits each input/received signal to each unit. Signal transmission function list Signal name Input Output Description Ignition switch ON si ...

Power control system
System Diagram System Description COOLING FAN CONTROL IPDM E/R controls cooling fans according to the status of the cooling fan speed request signal received from ECM via CAN communication. GENERATOR CONTROL IPDM E/R outputs power generation command signal (PWM signal) to the generat ...

Additional service when replacing control unit (bcm)
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (BCM) : Description BEFORE REPLACEMENT When replacing BCM, save or print current vehicle specification with CONSULT configuration before replacement. NOTE: If "Before Replace ECU" cannot be used, use the "After Replace ECU" or ...