Nissan Pathfinder: Parking Brake System - System Description

Nissan Pathfinder (R53) 2022-2025 Service Manual / Brakes :: Parking Brake System / System Description

Component Parts. Electric Parking Brake System
Diagnosis System [abs Actuator and Electric Unit (control Unit)]

Component Parts. Electric Parking Brake System Nissan Pathfinder 2025

Component Parts Location

No.	Component	Function
1.	Parking brake actuator RH	Refer to Parking Brake Actuator.
2.	ABS (Anti-lock Braking System) actuator and electric unit (control unit)	Refer to ABS Actuator and Electric Unit (Control Unit).
3.	ECM (Engine Control Module)	Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN communication: Engine speed signal Engine torque signal Stop/start status signal Accelerator pedal position signal Refer to Component Parts Location for detailed component location.
4.	TCM (Transmission Control Module)	Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN communication: Target gear position signal Input speed signal Refer to Component Parts Location for detailed component location.
5.	IPDM E/R (Intelligent Power Distribution Module Engine Room)	Mainly transmits the following signal to the ABS actuator and electric unit (control unit) via CAN communication: Ignition switch ON signal Refer to System Description.
6.	Chassis control module	Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN communication: Electric parking brake operation request signal Chassis control module malfunction signal Refer to Component Parts Location for detailed component location.
7.	BCM (Body Control Module)	Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN communication: Front seat belt buckle switch LH signal Nissan Pathfinder Vehicle status signal Door switch (driver side) signal Brake pedal status signal Refer to System Description.
8.	Combination meter	Mainly receives the following signals from ABS actuator and electric unit (control unit) via CAN communication: Buzzer output signal Electric parking brake indicator lamp signal Electric parking brake warning lamp signal Meter display signal Refer to Component Parts Location (Full TFT Meter) or Component Parts Location (7 Inch Information Display Meter) for detailed component location.
9.	Parking brake switch	Refer to Parking Brake Switch.
10.	Parking brake actuator LH	Refer to Parking Brake Actuator.

ABS Actuator and Electric Unit (Control Unit)

FUNCTIONS WITHIN THE SYSTEM

ABS actuator and electric unit (control unit) is located at RH side of engine compartment.
The parking brake actuator is controlled by the signals from the parking brake switch, sensors, and units.

NOTE:
The parking brake is released and applied by controlling the parking brake actuator.
When a malfunction is detected, the system enters fail-safe mode.

INDIVIDUAL FUNCTIONS WITHIN THE SYSTEM

Controls the parking brake actuator.

Parking Brake Switch

FUNCTIONS WITHIN THE SYSTEM

Parking brake switch is located on the center console.
Parking brake is applied/released by the parking brake switch operation.

INDIVIDUAL FUNCTIONS WITHIN THE SYSTEM

When the parking brake switch is pushed / pulled, the circuit between the ABS actuator and electric unit (control unit) is established to input the switch signal.
When parking brake is applied, parking brake switch indicator lamp is turned ON by the ABS actuator and electric unit (control unit).

Parking Brake Actuator

FUNCTIONS WITHIN THE SYSTEM

The parking brake actuator is installed on rear brake caliper .
The parking brake actuator activates / releases the parking brake by moving the piston of the rear brake caliper according to the signal from the ABS actuator and electric unit (control unit).