Nissan X-Trail 32. Manual — part 1621

PB-10

< SYSTEM DESCRIPTION >

COMPONENT PARTS

Center console

Clutch pedal

Under center console

Rear brake caliper assembly

JSFIA2499ZZ

No.

Component part

Function

Parking brake actuator (RH)

PB-12, "Parking Brake Actuator"

Rear brake caliper assembly (RH)

Parking brake actuator harness

COMPONENT PARTS

PB-11

< SYSTEM DESCRIPTION >

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*1: CVT models
*2: M/T models

Combination meter

Mainly transmits the following signal to electric parking brake control module via
CAN communication.
• Seat belt buckle switch (driver side) signal
Mainly receives the following signals from electric parking brake control module
via CAN communication.
• Electric parking brake indicator lamp signal
• Brake system warning lamp signal
• Master warning lamp signal
• Electric parking brake display request signal
Refer to

MWI-7, "METER SYSTEM : Component Parts Location"

for detailed in-

stallation location.

ABS actuator and electric unit (control unit)

Mainly transmits the following signal to electric parking brake control module via
CAN communication.
• Rear LH wheel speed signal
• Rear RH wheel speed signal
• VDC operation signal
• Brake fluid pressure signal
• ABS operation signal
Refer to

BRC-14, "Component Parts Location"

for detailed installation location.

TCM

*1

Mainly transmits the following signal to electric parking brake control module via
CAN communication.
• Target gear position signal
Refer to

TM-466, "CVT CONTROL SYSTEM : Component Parts Location"

for de-

tailed installation location.

ECM

Mainly transmits the following signal to electric parking brake control module via
CAN communication.
• Engine speed signal
• Engine torque signal
Refer to

EC-812, "Component Parts Location"

for detailed installation location.

IPDM E/R

Mainly transmits the following signal to electric parking brake control module via
CAN communication.
• Ignition switch ON signal
Refer to

PCS-5, "Component Parts Location"

for detailed installation location.

BCM

Mainly transmits the following signal to electric parking brake control module via
CAN communication.
• Stop lamp switch signal
• Steering lock status signal
• Wake up sleep command signal
• Door switch (driver side) signal
Refer to

BCS-6, "BODY CONTROL SYSTEM : Component Parts Location"

for de-

tailed installation location.

Parking brake switch

PB-12, "Parking Brake Switch"

Clutch pedal stroke sensor

*2

PB-12, "Clutch Pedal Stroke Sensor"

Electric parking brake control module

PB-12, "Electric Parking Brake Control Module"

Rear brake caliper assembly (LH)

PB-12, "Parking Brake Actuator"

Parking brake actuator harness

Parking brake actuator (LH)

No.

Component part

Function

PB-12

< SYSTEM DESCRIPTION >

COMPONENT PARTS

Electric Parking Brake Control Module

INFOID:0000000010722917

• 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 park-
ing brake actuator.

• Calculates the G sensor signal information that affects the vehicle,

and transmits a signal to parking brake control module. (G sensor
is integrated in parking brake control module).

• When a malfunction is detected, the system enters fail-safe mode.

Parking Brake Switch

INFOID:0000000010722918

• Pulling the parking brake switch applies the parking brake.
• Pressing the parking brake switch releases the parking brake.
• When the parking brake is applied, the parking brake switch indica-

tor turns ON. In addition, it turns OFF when the parking brake is
released.

Parking Brake Actuator

INFOID:0000000010722919

• The parking brake actuator

is installed on rear brake caliper

.

CAUTION:

Never reuse the parking brake actuator if the parking brake
actuator is removed.

• The signal from the electric parking brake control module applies

and releases the parking brake.

• Parking brake actuator is composed of a motor, gear, pulley, belt,

etc.

• It operates/releases the parking brake by transmitting the motor

rotation output to the piston of the rear brake caliper.
NOTE:
Braking condition is mechanically maintained. It is not always ener-
gized.

Clutch Pedal Stroke Sensor

INFOID:0000000010722920

Detects the amount that the clutch pedal is depressed and send it to
the electric parking brake control module.
NOTE:
Clutch pedal stroke sensor is applied to M/T models.

JSFIA2422ZZ

JSFIA2424ZZ

JSFIA2426ZZ

JSFIA2431ZZ

SYSTEM

PB-13

< SYSTEM DESCRIPTION >

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SYSTEM

System Description

INFOID:0000000010722921

• The electric parking brake system uses the signal from the parking brake switch to have the electric parking

brake control module operate the parking brake actuator to apply and release the parking brake.

• The parking brake switch is placed in the center console so that it can be operated close at hand (applied/

released).

• When the parking brake is operated, the electric parking brake indicator lamp in the combination meter and

the parking brake switch indicator turn ON.

• When the parking brake is released, the electric parking brake indicator lamp in the combination meter and

the parking brake switch indicator turn OFF.

• When a malfunction occurs in the electric parking brake system, brake system warning lamp (yellow) and

parking brake switch indicator turns blink, and the function for entering the fail-safe status is held.

• When a malfunction occurs in the electric parking brake system, the parking brake can be mechanically

released. Refer to

PB-148, "Diagnosis Procedure"

.

OPERATION

• When the parking brake switch is pulled, a parking brake operation switch signal is transmitted from the

electric parking brake control module to the parking brake actuator.

• When the parking brake actuator receives a parking brake switch signal, it activates the motor in the parking

brake actuator.

• When the motor is operated, rotating torque is generated, and transmitted to the piston in the parking brake

actuator of the rear brake caliper via gears in parking brake actuator and belts in the parking brake actuator.

• The piston is pushed out by the rotating torque, and the parking brake operates by pressing the brake pad

against the disc rotor.

RELEASE

• When the parking brake switch is pushed, a parking brake release switch signal is transmitted from the elec-

tric parking brake control module to the parking brake actuator.

• When a parking brake switch signal is input, the motor in the parking brake actuator rotates in reverse and

pulls back the piston of the rear brake caliper.

• By pulling back the piston of the rear brake caliper, the brake pad and disc rotor are released as with the nor-

mal brakes, and the parking brake is released.

SYSTEM DIAGRAM

NOTE:
• TCM is applied to CVT models.
• Clutch pedal stroke sensor is applied to M/T models