Nissan Maxima Service and Repair Manual: Power distribution system

System Description

INPUT/OUTPUT SIGNAL CHART

Nissan Maxima. INPUT/OUTPUT SIGNAL CHART

SYSTEM DESCRIPTION

  • POWER DISTRIBUTION SYSTEM (PDS) is the system that BCM controls with the operation of the pushbutton ignition switch and performs the power distribution to each power circuit. This system is used instead of the mechanical power supply changing mechanism with the operation of the conventional key cylinder.
  • The push-button ignition switch can be operated when Intelligent Key is in the following conditions. Refer to Engine Start Function for details.
  • Intelligent Key is in the detection area of the interior antenna
  • Insert Intelligent Key in to the key slot
  • The push-button ignition switch operation is input to BCM as a signal. BCM changes the power supply position according to the status and operates the following relays to supply power to each power circuit.
  • Ignition relay-1 (inside IPDM E/R)
  • Ignition relay-2 (inside fuse block (J/B))
  • ACC relay (inside fuse block (J/B))
  • Front blower motor relay

NOTE: The engine switch operation changes due to the conditions of brake pedal, CVT selector lever and vehicle speed.

  • The power supply position can be confirmed with the lighting of the indicators near the push-button ignition switch.

PUSH-BUTTON IGNITION SWITCH OPERATION PROCEDURE

The power supply position changing operation can be performed with the following operation.

NOTE:

  • When an Intelligent Key is within the detection area of inside key antenna and when it is inserted in to the key slot, it is equivalent to the operations below.
  • When starting the engine, the BCM monitors under the engine start conditions,
  • Brake pedal operating condition
  • CVT selector lever position
  • Vehicle speed
  • Unless each start condition is fulfilled, the engine will not respond regardless of how many times the engine switch is pressed. At that time, illumination repeats the position in the order of LOCK→ACC→ON→OFF

Nissan Maxima. PUSH-BUTTON IGNITION SWITCH OPERATION PROCEDURE

Nissan Maxima. PUSH-BUTTON IGNITION SWITCH OPERATION PROCEDURE

*1: When the CVT selector lever position is N position, the engine start condition is different according to the vehicle speed.

  • At vehicle speed of 4 km/h (2 MPH) or less, the engine can start only when the brake pedal is depressed.
  • At vehicle speed of 4 km/h (2 MPH) or more, the engine can start even if the brake pedal is not depressed. (It is the same as "Engine stall return operation while driving".)

*2: When the CVT selector lever position is in any position other than P position and when the vehicle speed is 5 km/h or more, the engine stop condition is different.

  • Press and hold the push-button ignition switch for 2 seconds or more. (When the push-button ignition switch is pressed for too short a time, the operation may be invalid, so properly press and hold to prevent the incorrect operation.)
  • Press the push-button ignition switch 3 times or more within 1.5 seconds. (Emergency stop operation)

Component Parts Location

Nissan Maxima. Component Parts Location

  1. BCM M16, M17, M18, M19, M21 (view with instrument panel removed)
  2. IPDM E/R E16, E17, E18 (contains IGN relay-1)
  3. A. Fuse block (J/B) M3, M4, M5, E6 B. IGN relay-2 C. ACC relay-1 D. Front blower motor relay
  4. Push-button ignition switch M38

Component Description

Nissan Maxima. Component Description

    System description
    ...

    Diagnosis system (BCM)
    COMMON ITEM COMMON ITEM : CONSULT Function (BCM - COMMON ITEM) APPLICATION ITEM CONSULT performs the following functions via CAN communication with BCM. SYSTEM APPLICATION BCM can perform the ...

    Other materials:

    B2603 shift position status
    Description BCM confirms the shift position with the following 2 signals.  CVT selector lever  P/N position switch DTC Logic DTC DETECTION LOGIC NOTE: If DTC B2603 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to ...

    Basic inspection
    DIAGNOSIS AND REPAIR WORK FLOW Work Flow OVERALL SEQUENCE DETAILED FLOW 1.GET INFORMATION FOR SYMPTOM Get detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurred). 2.CONFIRM THE SYMPTOM Try to confirm the sympt ...

    Main line between HVAC and A-bag circuit
    Diagnosis Procedure 1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. A/C auto amp. Harness connectors M1 and E30 Check the continuity between the A/C au ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

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