Nissan Murano: System / Vdc Function
SYSTEM DIAGRAM
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Side slip or tail slip may occur while driving on a slippery road or intending urgent evasive driving. VDC function detects side slip status using each sensor when side slip or tail slip is about to occur and improves Nissan Murano vehicle stability by brake control and engine output control during driving.
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In addition to ABS function, EBD function and TCS function, target side slip amount is calculated according to steering operation amount from steering angle sensor and brake operation amount from brake pressure sensor. By comparing this information with Nissan Murano vehicle side slip amount that is calculated from information from yaw rate/side/decel G sensor and wheel sensor, Nissan Murano vehicle driving conditions (conditions of understeer or oversteer) are judged and vehicle stability is improved by brake force control on all wheels and engine output control.
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VDC function can be switched to non-operational status (OFF) by operating VDC OFF switch. In this case, VDC OFF indicator lamp turns ON.
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Control unit portion automatically improves driving stability by performing brake force control as well as engine output control, by transmitting drive signal to actuator portion according to difference between target side slip amount and Nissan Murano vehicle side slip amount
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VDC warning lamp blinks while VDC function is in operation and indicates to the driver that the function is in operation.
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CONSULT can be used to diagnose the system diagnosis.
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Fail-safe function is adopted. When a malfunction occurs in VDC function, the control is suspended for VDC function, TCS function, brake assist function, hill start assist function and brake force distribution function. The Nissan Murano vehicle status becomes the same as models without VDC function, TCS function, brake assist function and hill start assist function. However, ABS function and EBD function are operated normally. Refer to Fail-Safe.
SIGNAL TRANSMISSION FUNCTION LIST
Major signal transmission between each unit via communication lines is shown in the following table:
| Component | Signal description |
|---|---|
| ECM |
Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN communication:
Mainly receives the following signal from ABS actuator and electric unit (control unit) via CAN communication:
|
| TCM |
Mainly transmits the following signal to ABS actuator and electric unit (control unit) via CAN communication:
|
| Combination meter |
Mainly receives the following signals from ABS actuator and electric unit (control unit) via CAN communication:
Mainly receives the following signals from ABS actuator and electric unit (control unit) via CAN communication:
|
| Steering angle sensor |
Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN communication:
|
OPERATION CHARACTERISTICS
VDC Function That Prevents Oversteer Tendency
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During cornering, brake force (brake fluid pressure) is applied on front wheel and rear wheel on the outer side of turn. Momentum directing towards the outer side of turn is generated. Oversteer is prevented.
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Changing driving lane on a slippery road when oversteer tendency is judged large, engine output is controlled as well as brake force (brake fluid pressure) of 4 wheels. Oversteer tendency decreases.
VDC Function That Prevents Understeer Tendency
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During cornering, brake force (brake fluid pressure) is applied on front wheel and rear wheel on the inner side of turn. Momentum directing towards the inner side of turn is generated. Understeer is prevented.
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Applying braking during cornering on a slippery road when understeer tendency is judged large, engine output is controlled as well as brake force (brake fluid pressure) of four wheels. Understeer tendency decreases.
System
System Description
The system switches fluid pressure of each brake caliper to increase, hold or decrease according to signals from control unit in ABS actuator and electric unit (control unit)...
Tcs Function
System Description
SYSTEM DIAGRAM
Wheel spin status of drive wheel is detected by wheel sensor of 4 wheels. Engine output and transmission shift status are controlled so that slip rate of drive wheels is in appropriate level...
Other information:
Nissan Murano (Z52) 2015-2024 Service Manual: General Information :: Vehicle Information. Identification Information
Model Variation FWD Model Body Engine Transmission Grade Destination Federal Wagon VQ35DE CVT S TLJALPW-EUA SV TLJALQW-EUA SL TLJALRW-EUA Platinum TLJALSW-EUA AWD Model Body Engine Transmission Grade Destination Federal Canada Wagon VQ35DE CVT S TLJNLPW-EUA TLJNLPW-ENA SV TLJNLQW-EUA TLJNLQW-ENA SL TLJNLRW-EUA TLJNLRW-ENA Platinum TLJNLSW-EUA TLJNLSW-ENA Prefix and suffix designations Position Character Qualifier Definition 1 T Body type T: SUV 2 LJ Engine LJ: VQ35DE 3 4 A Axle A: FWD N: AWD 5 L Drive L: LH 6 P Grade P: S Q: SV R: SL S: Platinum 7 W Transmission W: CVT 8 Z52 Model Z52: Murano 9 10 11 E Intake E: EGI 12 U Zone N: Canada U: Federal 13 A Payload A: Regular (1,500 lbs...
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) 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 Yaw rate signal Receives yaw rate acting on the Nissan Murano vehicle Stop lamp switch signal Receives an operational state of the brake pedal 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 Distance sensor ITS communication Distance sensor signal Receives detection results, such as the presence or absence of a leading Nissan Murano vehicle and distance from the vehicle Lane camera unit Chassis CAN communication Pedestrian ahead signal Receives detection results of pedestrian ahead of Nissan Murano vehicle Vehicle ahead signal Receives detection results of Nissan Murano vehicle ahead Output Signal Item Reception unit Signal name Description ABS actuator and electric unit (control unit) CAN communication Brake fluid pressure control signal Transmits a brake fluid pressure control signal to activates the brake Combination meter CAN communication Meter display signal Nissan Murano Vehicle ahead detection indicator signal Transmits a signal to display a state of the system on the information display AEB/I-FCW system display signal AEB warning signal Distance sensor ITS communication Nissan Murano Vehicle speed signal Transmits a vehicle speed calculated by the ADAS control unit Steering angle sensor signal Transmits a steering angle sensor signal received from the steering angle sensor Warning buzzer Warning buzzer signal Activates the warning buzzer ICC brake hold relay ICC brake hold relay drive signal Activates the brake hold relay and turns ON the stop lamp DESCRIPTION Automatic Emergency Braking (AEB) system can assist the driver when there is a forward collision with the Nissan Murano vehicle ahead in the traveling lane...
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Fuel gauge
The gauge indicates the approximate fuel level in the tank.
The gauge may move slightly during braking, turning, acceleration, or going up or down hills.
The gauge needle returns to 0 (Empty) after the ignition switch is placed in the OFF position.
