Nissan Maxima Service and Repair Manual: Signal buffer system

System Diagram

Nissan Maxima. 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 signal
  • Ignition switch signal
Engine switch (push switch) IPDM E/R (CAN) Inputs the push-button ignition switch (push switch) signal and transmits the ignition switch status judged with BCM via CAN communication
Door switch signal Any door switch
  • Combination meter (CAN)
  • IPDM E/R (CAN)
Inputs the door switch signal and transmits it via CAN communication
Trunk switch signal Trunk room lamp switch Combination meter (CAN) Inputs the trunk room lamp switch signal and transmits the trunk switch signal via CAN communication
Oil pressure switch signal IPDM E/R (CAN) Combination meter (CAN) Transmits the received oil pressure switch signal via CAN communication
    Combination switch reading system
    System Diagram System Description OUTLINE BCM reads the status of the combination switch (light, turn signal, wiper and washer) and recognizes the status of each switch. BCM has a co ...

    Power consumption control system
    System Diagram System Description OUTLINE BCM incorporates a power saving control function that reduces the power consumption according to the vehicle status. BCM switches the status ...

    Other materials:

    Normal operating condition
    Description Symptom Result Slight vibrations are felt on the brake pedal and the operation noises occur, when VDC, TCS or ABS is activated. This is a normal condition due to the VDC, TCS or ABS activation. Stopping distance is longer than that of v ...

    P1572 ASCD brake switch
    Description When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON. ECM detects the state of the brake pedal by those two types of input (ON/OFF signal). Refer to EC-68, "System Diagram" for the ASCD function. DTC Logic DTC DETECTI ...

    Subwoofer
    Description The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the subwoofers using the audio signal circuits. Diagnosis Procedure 1.CONNECTOR CHECK Check the AV control unit, BOSE speaker amp. and subwo ...

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