Nissan Rogue Service Manual: System description

COMPONENT PARTS

BODY CONTROL SYSTEM

BODY CONTROL SYSTEM : Component Parts Location

1. BCM
1.  Behind instrument panel (LH)

POWER CONSUMPTION CONTROL SYSTEM

POWER CONSUMPTION CONTROL SYSTEM : Component Parts Location

1. Combination meter Refer to MWI-6, "METER SYSTEM : Component Parts Location".
2.  IPDM E/R Refer to PCS-4, "Component Parts Location".
3.  BCM Refer to BCS-7, "BODY CONTROL SYSTEM : Component Parts Location".

SYSTEM

BODY CONTROL SYSTEM

BODY CONTROL SYSTEM : System Description

OUTLINE

•  BCM (body control module) controls various electrical components. It receives the information required from CAN communication and the signals received from each switch and sensor.
•  BCM has a combination switch reading function for reading the status of combination switches (light, turn signal, wiper and washer) in addition to functions for controlling the operation of various electrical components.

  It also has a signal transmission function for other systems, and a power consumption control function that reduces the power consumption with the ignition switch OFF.

• • BCM is equipped with a diagnosis function that operates with CONSULT and allows for various settings to be changed.

BCM FUNCTION LIST

COMBINATION SWITCH READING SYSTEM

COMBINATION SWITCH READING SYSTEM : System Description

SYSTEM DIAGRAM

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 combination of 5 output terminals (OUTPUT 1 - 5) and 5 input terminals (INPUT 1 - 5) and reads a maximum of 20 switch states.

COMBINATION SWITCH MATRIX

Combination switch circuit

Combination switch INPUT-OUTPUT system list

COMBINATION SWITCH READING FUNCTION

Description

•  BCM reads the status of the combination switch at 10 ms intervals normally.

NOTE: BCM reads the status of the combination switch at 60 ms intervals when BCM is controlled at low power consumption control mode.

•  BCM operates as follows and judges the status of the combination switch.

•  It operates the transistor on OUTPUT side in the following order: OUTPUT 1 → 2 → 3 → 4 → 5, and outputs voltage waveform.
•  The voltage waveform of OUTPUT corresponding to the formed circuit is input into the interface on INPUT side if any (1 or more) switches are ON.
• It reads this change of the voltage as the status signal of the combination switch.

Operation Example

In the following operation example, the combination of the status signals of the combination switch is replaced as follows: INPUT 1 - 5 to “1 - 5” and OUTPUT 1 - 5 to “A - E”.

Example 1: When a switch (TURN RH) is turned ON

•  The circuit between OUTPUT 3 and INPUT 5 is formed when the TURN RH switch is turned ON.

• BCM detects the combination switch status signal “5C” when the signal of OUTPUT 3 is input to INPUT 5.
•  BCM judges that the TURN RH switch is ON when the signal “5C” is detected.

Example 2: When some switches (FR FOG, TURN RH) are turned ON

• The circuits between OUTPUT 1 and INPUT 5 and between OUTPUT 3 and INPUT 5 are formed when the FR FOG switch and TURN RH switch are turned ON.

• BCM detects the combination switch status signal “5AC” when the signals of OUTPUT 1 and OUTPUT 3 are input to INPUT 5.
•  BCM judges that the FR FOG switch and TURN RH switch are ON when the signal “5AC” is detected.

WIPER INTERMITTENT DIAL POSITION SETTING (FRONT WIPER INTERMITTENT OPERATION)

BCM judges the wiper intermittent dial 1 - 4 by the status of INT VOLUME 1, 2, and 3 switches.

SIGNAL BUFFER SYSTEM

SIGNAL BUFFER SYSTEM : System Description

SYSTEM DIAGRAM

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.

POWER CONSUMPTION CONTROL SYSTEM

POWER CONSUMPTION CONTROL SYSTEM : System Description

SYSTEM DIAGRAM

OUTLINE

•  BCM incorporates a power saving control function that reduces the power consumption according to the vehicle status.
•  BCM switches the status (control mode) by itself with the power saving control function. It performs the sleep request to each unit (IPDM E/R and combination meter) that operates with the ignition switch OFF.

Normal mode (wake-up)

•  CAN communication is normally performed with other units
•  Each control with BCM is operating properly

CAN communication sleep mode (CAN sleep)

•  CAN transmission is stopped
•  Control with BCM only is operating

Low power consumption mode (BCM sleep)

•  Low power consumption control is active
•  CAN transmission is stopped

LOW POWER CONSUMPTION CONTROL WITH BCM

BCM reduces the power consumption with the following operation in the low power consumption mode.

•  The reading interval of each switch changes from 10 ms interval to 60 ms interval.

SLEEP MODE ACTIVATION

•  BCM receives the sleep-ready signal (ready) from IPDM E/R and combination meter via CAN communication.
•  BCM transmits the sleep wake up signal (sleep) to each unit when all of the CAN sleep conditions are fulfilled.
•  Each unit stops the transmission of CAN communication with the sleep wake-up signal. BCM is in CAN communication sleep mode.
• BCM is in the low power consumption mode and performs the low power consumption control when all of the BCM sleep conditions are fulfilled with CAN sleep condition.

Sleep condition

CAN sleep condition

BCM sleep condition

Receiving the sleep-ready signal (ready) from all units  Ignition switch: OFF  Vehicle security system alarm and panic alarm: No operation  Warning lamp: No operation  Intelligent Key system buzzer: No operation  Brake switch: OFF  Turn signal indicator lamp: No operation  Exterior lamp: OFF  Door lock status: No change  CONSULT communication status: No communication  Meter display signal: Non-transmission  Door switch status: No change  Rear window defogger: OFF

Interior room lamp battery saver: Time out  RAP system: OFF  Push-button ignition switch (push switch) illumination: OFF  NATS: No operation  Tire pressure monitoring system: Stop

WAKE-UP OPERATION

•  BCM changes from the low power consumption mode to the CAN communication sleep mode when the any of the BCM wake-up conditions are fulfilled. Only the control with BCM is activated.
•  BCM transmits the sleep wake-up signal (wake up) to each unit when any of the CAN wake-up conditions are fulfilled. It changes from the low power consumption mode or the CAN communication sleep mode to the normal mode.
•  Each unit starts the transmission of CAN communication with the sleep wake-up signal. In addition, the combination meter transmits the wake-up signal to BCM via CAN communication to report the CAN communication start.

BCM wake-up condition

CAN wake-up condition

Door lock assembly LH (key cylinder switch): Lock or unlock  Door lock switch: OFF→ON  Door unlock switch: OFF→ON  Back door opener switch: OFF→ON

Receiving the sleep-ready signal (Not-ready) from any units  Push-button ignition switch (push switch): OFF→ON  Hazard switch: OFF→ON  PASSING switch: OFF→ON, ON→OFF  TAIL LAMP switch: OFF→ON  Driver door switch: OFF→ON, ON→OFF  Passenger door switch: OFF → ON, ON → OFF  Back door switch: OFF→ON, ON→OFF  Driver door request switch: OFF→ON  Passenger door request switch: OFF→ON  Back door request switch: OFF→ON  Stop lamp switch signal: ON

SHIPPING MODE CONTROL SYSTEM

SHIPPING MODE CONTROL SYSTEM : System Description

SYSTEM DIAGRAM

DESCRIPTION

•  BCM switches the status (shipping mode or normal mode) by itself according to the extended storage fuse switch condition, and transmits shipping mode status signal to combination meter and each unit via CAN communication.
•  When shipping mode function operates, each control unit does not detect DTCs.
•  BCM control functions are limited in shipping mode. Refer to BCS-74, "Description".
•  The combination meter displays extended storage fuse warning message* on the information display, and turns the turn signal indicator lamp (LH/RH) ON, when BCM is in shipping mode.

*: When shipping mode function operates, “SHIPPING MODE ON PUSH STORAGE FUSE” is displayed.

DIAGNOSIS SYSTEM (BCM)

COMMON ITEM

COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)

APPLICATION ITEM

CONSULT performs the following functions via CAN communication with BCM.

Direct Diagnostic Mode	Description
Ecu Identification	The BCM part number is displayed.
Ecu Identification	The BCM self diagnostic results are displayed.
Data Monitor	The BCM input/output data is displayed in real time.
Active Test	The BCM activates outputs to test components.
Work support	The settings for BCM functions can be changed.
Configuration	The vehicle specification can be read and saved.  The vehicle specification can be written when replacing BCM.
CAN Diag Support Mntr	The result of transmit/receive diagnosis of CAN communication is displayed.

SYSTEM APPLICATION

BCM can perform the following functions.

DOOR LOCK

DOOR LOCK : CONSULT Function (BCM - DOOR LOCK)

SELF DIAGNOSTIC RESULT

Refer to BCS-48, "DTC Index".

DATA MONITOR

ACTIVE TEST

WORK SUPPORT

* : Initial setting

REAR DEFOGGER

REAR DEFOGGER : CONSULT Function (BCM - REAR DEFOGGER)

DATA MONITOR

ACTIVE TEST

WORK SUPPORT

* : Initial setting

BUZZER

BUZZER : CONSULT Function (BCM - BUZZER)

DATA MONITOR

ACTIVE TEST

INT LAMP

INT LAMP : CONSULT Function (BCM - INT LAMP)

DATA MONITOR

ACTIVE TEST

WORK SUPPORT

*: Initial setting

HEADLAMP

HEADLAMP : CONSULT Function (BCM - HEADLAMP)

DATA MONITOR

WORK SUPPORT

*: Initial setting

WIPER

WIPER : CONSULT Function (BCM - WIPER)

DATA MONITOR

ACTIVE TEST

WORK SUPPORT

*: Initial Setting

FLASHER

FLASHER : CONSULT Function (BCM - FLASHER)

DATA MONITOR

ACTIVE TEST

INTELLIGENT KEY

INTELLIGENT KEY : CONSULT Function (BCM - INTELLIGENT KEY)

SELF DIAGNOSTIC RESULT

Refer to BCS-48, "DTC Index".

DATA MONITOR

ACTIVE TEST

WORK SUPPORT

COMB SW

COMB SW : CONSULT Function (BCM - COMB SW)

DATA MONITOR

BCM

BCM : CONSULT Function (BCM - BCM)

ECU IDENTIFICATION

The BCM part number is displayed.

SELF DIAGNOSTIC RESULT

Refer to BCS-48, "DTC Index".

WORK SUPPORT

CONFIGURATION

Refer to BCS-61, "CONFIGURATION (BCM) : Description".

CAN DIAG SUPPORT MNTR

Refer to LAN-14, "CAN Diagnostic Support Monitor".

IMMU

IMMU : CONSULT Function (BCM - IMMU)

SELF DIAGNOSTIC RESULT

Refer to BCS-48, "DTC Index".

DATA MONITOR

ACTIVE TEST

WORK SUPPORT

BATTERY SAVER

BATTERY SAVER : CONSULT Function (BCM - BATTERY SAVER)

DATA MONITOR

ACTIVE TEST

TRUNK

TRUNK : CONSULT Function (BCM - TRUNK)

DATA MONITOR

THEFT ALM

THEFT ALM : CONSULT Function (BCM - THEFT ALM)

DATA MONITOR

ACTIVE TEST

WORK SUPPORT

RETAINED PWR

RETAINED PWR : CONSULT Function (BCM - RETAINED PWR)

DATA MONITOR

SIGNAL BUFFER

SIGNAL BUFFER : CONSULT Function (BCM - SIGNAL BUFFER)

DATA MONITOR

AIR PRESSURE MONITOR

AIR PRESSURE MONITOR : CONSULT Function (BCM-AIR PRESSURE MONITOR)

NOTE: The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information.

•  Activate and display TPMS sensor IDs
•  Display tire pressure reported by the TPMS sensor
•  Read TPMS DTCs
•  Register TPMS sensor IDs
•  Check Intelligent Key relative signal strength
•  Confirm vehicle Intelligent Key antenna signal strength

SELF DIAGNOSTIC RESULT

NOTE: Before performing Self Diagnostic Result, be sure to register the sensor ID or the actual malfunction may be different from that displayed on CONSULT.

Refer to BCS-48, "DTC Index".

DATA MONITOR

ACTIVE TEST

WORK SUPPORT