Nissan Murano: System / Brake Assist Function

Nissan Murano (Z52) 2015-2024 Service Manual / Brakes / Brake Control System :: Vdc/tcs/abs / System Description / System / Brake Assist Function

System Description

SYSTEM DIAGRAM

When the driver brakes hard in an emergency, the stopping distance is reduced by increasing brake fluid pressure.
Fail-safe function is adopted. When a malfunction occurs in brake assist function, the control is suspended for VDC function, TCS function, brake assist function and hill start assist 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 signal to ABS actuator and electric unit (control unit) via CAN communication: Accelerator pedal position signal Brake pedal position signal Engine speed signal Engine torque signal Mainly receives the following signal from ABS actuator and electric unit (control unit) via CAN communication: Engine torque request signal
TCM	Mainly transmits the following signal to ABS actuator and electric unit (control unit) via CAN communication: Current gear position signal
Combination meter	Mainly receives the following signals from ABS actuator and electric unit (control unit) via CAN communication: Brake fluid level switch signal Parking brake switch signal Mainly receives the following signals from ABS actuator and electric unit (control unit) via CAN communication: VDC warning lamp signal VDC OFF indicator lamp signal
Steering angle sensor	Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN communication: Steering angle sensor signal Steering angle sensor malfunction signal

Ebd Function

System Description SYSTEM DIAGRAM By preventing rear wheel slip increase through rear wheel brake force (brake fluid pressure) control that is electronically controlled when slight slip on front and rear wheels is detected during braking, stability during braking is improved...

Hill Start Assist Function

System Description SYSTEM DIAGRAM This function maintains brake fluid pressure so that the vehicle does not move backward even if brake pedal is released to depress accelerator pedal to start the Nissan Murano vehicle while it is stopped on an uphill slope by depressing brake pedal...

Other information:

Nissan Murano (Z52) 2015-2024 Service Manual: Ecu Diagnosis Information. Adas Control Unit 2

Values on the Diagnosis Tool NOTE: The following table includes information (items) inapplicable to this Nissan Murano vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items. Monitor item Condition Value/Status MAIN SW Ignition switch ON When MAIN switch is pressed On When MAIN switch is not pressed Off SET/COAST SW Ignition switch ON When SET/COAST switch is pressed On When SET/COAST switch is not pressed Off CANCEL SW Ignition switch ON When CANCEL switch is pressed On When CANCEL switch is not pressed Off RESUME/ACC SW Ignition switch ON When RESUME/ACCELERATE switch is pressed On When RESUME/ACCELERATE switch is not pressed Off DISTANCE SW Ignition switch ON When DISTANCE switch is pressed On When DISTANCE switch is not pressed Off CRUISE OPE Drive the Nissan Murano vehicle and activate the vehicle-to-vehicle distance control mode When ICC system is controlling On When ICC system is not controlling Off BRAKE SW Ignition switch ON When brake pedal is depressed Off When brake pedal is not depressed On STOP LAMP SW Ignition switch ON When brake pedal is depressed On When brake pedal is not depressed Off IDLE SW Engine running Idling On Except idling (depress accelerator pedal) Off VHCL SPEED SE While driving Displays the Nissan Murano vehicle speed calculated by ADAS control unit ENGINE RPM Engine running Equivalent to tachometer reading THRTL SENSOR NOTE: The item is displayed, but it is not used...

Nissan Murano (Z52) 2015-2024 Service Manual: Abs Warning Lamp