Nissan Murano: System / Power Consumption Control System

Nissan Murano (Z52) 2015-2024 Service Manual / Electrical & Power Control / Power Control System :: Ipdm E/r / System Description / System / Power Consumption Control System

System Description

SYSTEM DIAGRAM

INPUT SIGNAL AND OUTPUT SIGNAL

Major signal transmission between each unit via communication lines is shown in the following table:

Component parts	Signal description
IPDM E/R	Each unit transmits the sleep-ready signal (ready) to BCM when all of the CAN sleep conditions are fulfilled. Each unit transmits the sleep-ready signal (not-ready) to BCM when all of the CAN sleep conditions are fulfilled. Each unit receives the sleep wake up signal (sleep) from BCM via CAN communication. Each unit receives the sleep wake-up signal (wake-up) from BCM via CAN communication.
Combination meter
BCM	BCM transmits the sleep wake up signal (sleep) to each unit when all of the CAN sleep conditions are fulfilled. BCM transmits the sleep wake-up signal (wake-up) to each unit when all of the CAN sleep conditions are fulfilled. BCM receives the sleep-ready signal (ready) from each unit via CAN communication. BCM receives the sleep-ready signal (not-ready) from each unit via CAN communication.

DESCRIPTION

IPDM E/R incorporates a power consumption control function that reduces the power consumption according to the Nissan Murano vehicle status.
IPDM E/R changes its status (control mode) with the sleep wake up signal received from BCM via CAN communication.

Normal mode (wake-up)
- CAN communication is normally performed with other control units.
- Individual unit control by IPDM E/R is normally performed.
Low power consumption mode (sleep)
- Low power consumption control is active.
- CAN transmission is stopped.

SLEEP MODE ACTIVATION

IPDM E/R judges that the sleep-ready conditions are fulfilled when the ignition switch is OFF and none of the conditions below are present. Then it transmits a sleep-ready signal (ready) to BCM via CAN communication.
- Front wiper fail-safe operation
- Outputting signals to actuators
- Switches or relays operating
- Auto active test is starting
- Emergency OFF
- Output requests are being received from control units via CAN communication.
IPDM E/R stops CAN communication and enters the low power consumption mode when it receives a sleep wake up signal (sleep) from BCM and the sleep-ready conditions are fulfilled.

WAKE-UP OPERATION

IPDM E/R changes from the low power consumption mode to the normal mode when it receives a sleep wake-up signal (wake up) from BCM or any of the following conditions is fulfilled. In addition, it transmits a sleep-ready signal (not-ready) to BCM via CAN communication to report the CAN communication start.
- Ignition switch ON
- An output request is received from a control unit via CAN communication.

IGNITION BATTERY SAVER LOGIC

If ignition switch ON for a period of time with the engine OFF, the IPDM E/R and BCM turn OFF to save the battery.

Relay Control System

System Description SYSTEM DIAGRAMSystem DescriptionIPDM E/R activates the internal control circuit to perform the relay ON-OFF control according to the input signals from various sensors and the request signals received from control units via CAN communication...

Diagnosis System (ipdm E/r)

Diagnosis Description AUTO ACTIVE TESTDescriptionIn auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation: Front wiper (LO, HI) Front fog lamps Parking lamps Side marker lamps Tail lamps License plate lamps Headlamps (LO, HI) A/C compressor Cooling fans (LO, HI) Operation ProcedureCAUTION: Do not start the engine...

Other information:

Nissan Murano (Z52) 2015-2024 Service Manual: System

System Description SYSTEM DIAGRAMADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEMInput Signal Item Transmit unit Signal name Description ECM CAN communication Closed throttle position signal Receives idle position state (ON/OFF) Accelerator pedal position signal Receives accelerator pedal position (angle) ICC prohibition signal Receives an operable/inoperable state of the ICC system Snow mode switch signal Receives an operational state of the snow mode Steering switch signal Main switch signal Receives the operational state of the ICC steering switch SET/COAST switch signal CANCEL switch signal RESUME/ACCELERATE switch signal DISTANCE switch signal Engine speed signal Receives engine speed Stop lamp switch signal Receives an operational state of the brake pedal Brake pedal position switch signal Receives an operational state of the brake pedal TCM CAN communication Input speed signal Receives the number of revolutions of input shaft Current gear position signal Receives a current gear position Shift position signal Receives a selector lever position Output shaft revolution signal Receives the number of revolutions of output shaft ABS actuator and electric unit (control unit) CAN communication ABS malfunction signal Receives a malfunction state of ABS ABS operation signal Receives an operational state of ABS ABS warning lamp signal Receives an ON/OFF state of ABS warning lamp TCS malfunction signal Receives a malfunction state of TCS TCS operation signal Receives an operational state of TCS VDC OFF switch signal Receives an ON/OFF state of VDC VDC malfunction signal Receives a malfunction state of VDC VDC operation signal Receives an operational state of VDC Nissan Murano Vehicle speed signal (ABS) Receives wheel speeds of four wheels Stop lamp switch signal Receives an operational state of the brake pedal Yaw rate signal Receives yaw rate acting on the Nissan Murano vehicle Side G sensor signal Receives lateral G acting on the Nissan Murano vehicle BCM CAN communication Front wiper request signal Receives an operational state of front wiper(s) Turn indicator signal Receives an operational state of the turn signal lamp and the hazard lamp Tail lamp request signal Receives a tail lamp request signal Brake pedal position switch signal Receives a brake pedal position switch signal Stop lamp switch signal Receives a stop lamp switch signal Stop lamp status signal Receives a stop lamp status signal Dimmer signal Receives ON/OFF state of dimmer signal Steering angle sensor CAN communication Steering angle sensor malfunction signal Receives a malfunction state of steering angle sensor Steering angle sensor signal Receives the number of revolutions, turning direction of the steering wheel Steering angle speed signal Receives the turning angle speed of the steering wheel Detected lane condition signal Receives detection results of lane marker Combination meter CAN communication System selection signal Receives a selection state of each item in “Driver Assistance” selected with the Nissan Murano vehicle information display Parking brake switch signal Receives an operational state of the parking brake Distance sensor (ICC sensor) ITS communication ICC sensor signal Receives detection results, such as the presence or absence of a Nissan Murano vehicle ahead and distance from the vehicle Lane camera unit (if equipped) ITS communication Detected lane condition signal Receives detection results of lane marker Detected pedestrian condition signal Receives detection results of pedestrian Side radar LH, RH ITS communication Nissan Murano Vehicle detection signal Receives vehicle detection condition of detection zone Lane intervention switch Lane intervention switch signal Receives an ON/OFF state of the lane intervention switch Output Signal Item Reception unit Signal name Description ECM CAN communication ICC operation signal Transmits an ICC operation signal necessary for intelligent cruise control ABS actuator and electric unit (control unit) CAN communication Brake fluid pressure control signal Transmits a brake fluid pressure control signal to activate the brake Combination meter CAN communication Meter display signal Handle support indicator signal Transmits a signal to display a state of the system on the information display Nissan Murano Vehicle ahead detection indicator signal Vehicle ahead detection indicator signal Set Nissan Murano vehicle speed indicator signal Set distance indicator signal SET switch indicator signal MAIN switch indicator signal Blind Spot Warning warning lamp signal Transmits a Blind Spot Warning warning lamp signal to turn ON the Blind Spot Warning warning lamp Intelligent Lane Intervention ON indicator lamp signal Transmits an Intelligent Lane Intervention ON indicator lamp signal to turn ON the Intelligent Lane Intervention ON indicator lamp Lane departure warning lamp signal Transmits a lane departure warning lamp signal to turn ON the lane departure warning lamp ICC warning lamp signal Transmits an ICC warning lamp signal to turn ON the ICC system warning lamp AEB indicator lamp signal Transmits a signal to turn ON the AEB indicator Transmits a signal to turn OFF the AEB indicator Distance sensor (ICC sensor) ITS communication Nissan Murano Vehicle speed signal Transmits vehicle speed calculated by the ADAS control unit Steering angle sensor signal Transmits steering angle sensor signal received from the steering angle sensor Side radar LH, RH ITS communication Nissan Murano Vehicle speed signal Transmits vehicle speed calculated by the ADAS control unit Blind Spot Warning indicator signal Transmits a Blind Spot Warning indicator signal to turn ON the Blind Spot Warning indicator Blind Spot Warning indicator dimmer signal Transmits a Blind Spot Warning indicator dimmer signal to dim Blind Spot Warning indicator Steering angle sensor CAN communication ICC brake hold drive signal Activates brake hold and turns ON the stop lamp BCM CAN communication Stop lamp ON request signal Transmits a stop lamp ON request signal Intelligent Lane Intervention system ON indicator Intelligent Lane Intervention system ON indicator signal Turns ON the Intelligent Lane Intervention system ON indicator Warning system buzzer Warning buzzer signal Activates warning system buzzer DESCRIPTION ADAS* control unit controls the following systems based on ITS communication signal and CAN communication signal from each control unit...

Nissan Murano (Z52) 2015-2024 Service Manual: Brake Pad

Inspection and Adjustment INSPECTIONCheck brake pad wear thickness from an inspection hole (A) on cylinder body. Check using a scale if necessary. Wear thickness : Refer to Rear Disc Brake. ADJUSTMENTCAUTION: Burnish contact surfaces between brake pads and disc rotor according to the following procedure after refinishing the disc rotor, replacing brake pads or if a soft pedal occurs at very low mileage...