2016 NISSAN NOTE brake fluid

BRC-12
< SYSTEM DESCRIPTION >[VDC/TCS/ABS]
SYSTEM
VALVE OPERATION (VDC AND TCS FUNCTIONS)
The control unit built in the ABS actuator and electric unit (control unit) controls fluid pressure of the brake cal-
ipers by operating each valve.
VDC and TCS Functions are Operating (Pressure Increases)
Component
Signal description
Steering angle sensor Transmits the steering angle sensor signal to ABS actuator and electric unit (control unit) via
CAN communication.
ECM Transmits the following signals to ABS actuator and electric unit (control unit) via CAN commu-
nication:
• Accelerator pedal position signal
• Engine speed signal
• Target throttle position signal
TCM Transmits the current gear position signal to ABS actuator and electric unit (control unit) via
CAN communication.
Combination meter Transmits the following signals to ABS actuator and electric unit (control unit) via CAN commu-
nication:
• Brake fluid level switch signal
• Parking brake switch signal
Receives the following signals fr
om ABS actuator and electric un it (control unit) via CAN com-
munication:
• ABS warning lamp signal
• Brake warning lamp signal
• VDC OFF indicator lamp signal
• SLIP indicator lamp signal
JSFIA0670GB
Name Not activated Pressure increases
Cut valve 1 Power supply is not supplied (open) Power supply is supplied (close)
Cut valve 2 Power supply is not supplied (open) Power supply is supplied (close)
Suction valve 1 Power supply is not supplied (close) Power supply is supplied (open)
Suction valve 2 Power supply is not supplied (close) Power supply is supplied (open)
ABS IN valve Power supply is not supplied (open) Power supply is not supplied (open)
Revision: August 2015 2016 Versa Note

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SYSTEMBRC-13
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
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Front RH brake caliper
• Brake fluid is conveyed to the pump from the master cylinder through suction valve 1 and is pressurized by
the pump operation. The pressurized brake fluid is supplied to the front RH brake caliper through the ABS IN
valve. For the left caliper, brake fluid pressure is maintained because the pressurization is unnecessary. The
pressurization for the left caliper is cont rolled separately from the right caliper.
Front LH brake caliper• Brake fluid is conveyed to the pump from the master cylinder through suction valve 2 and is pressurized by
the pump operation. The pressurized brake fluid is suppl ied to the front LH brake caliper through the ABS IN
valve. For the right caliper, brake fluid pressure is maintained because the pressurization is unnecessary.
The pressurization for the right caliper is controlled separately from the left caliper.
Rear RH wheel cylinder
• Brake fluid is conveyed to the pump from the master cylinder through suction valve 2 and is pressurized by
the pump operation. The pressurized brake fluid is supplied to the rear RH wheel cylinder through the ABS
IN valve. For the left wheel cylinder, brake fluid pressure is maintained because the pressurization is unnec-
essary. The pressurization for the left wheel cylinder is controlled separately from the right wheel cylinder.
Rear LH wheel cylinder• Brake fluid is conveyed to the pump from the master cylinder through suction valve 1 and is pressurized by
the pump operation. The pressurized brake fluid is s upplied to the rear LH wheel cylinder through the ABS
IN valve. For the right wheel cylinder, brake fluid pressure is maintained because the pressurization is
unnecessary. The pressurization for the right wheel cylinder is controlled separately from the left wheel cylin-
der.
VDC and TCS Functions Start Operating (Pressure Holds)
ABS OUT valve Power supply is not supplie d (close) Power supply is not supplied (close)
Each brake caliper and each wheel cylinder
(fluid pressure) —
Pressure increases
Name
Not activated Pressure increases
JSFIA0677GB
Revision: August 2015 2016 Versa Note

cardiagn.com

BRC-14
< SYSTEM DESCRIPTION >[VDC/TCS/ABS]
SYSTEM
Front RH brake caliper• Since the cut valve 1 and the suction valve 1 are closed, the front RH brake caliper, master cylinder, and res-
ervoir are blocked. This maintains fluid pressure applied on the front RH brake caliper. The pressurization for
the left caliper is controlled separately from the right caliper.
Front LH brake caliper
• Since the cut valve 2 and the suction valve 2 are closed, the front LH brake caliper, master cylinder, and res-ervoir are blocked. This maintains fluid pressure applied on the front LH brake caliper. The pressurization for
the right caliper is controlled separately from the left caliper.
Rear RH wheel cylinder
• Since the cut valve 2 and the suction valve 2 are closed, the rear RH wheel cylinder, master cylinder, andreservoir are blocked. This maintains fluid pressure applied on the rear RH wheel cylinder. The pressuriza-
tion for the left wheel cylinder is controll ed separately from the right wheel cylinder.
Rear LH wheel cylinder• Since the cut valve 1 and the suction valve 1 are closed, the rear LH wheel cylinder, master cylinder, and
reservoir are blocked. This maintains fluid pressure applied on the rear LH wheel cylinder. The pressuriza-
tion for the right wheel cylinder is controlled separately from the left wheel cylinder.
VDC and TCS Functions Operating (Pressure Decreases)
Name Not activated Pressure holds
Cut valve 1 Power supply is not supplied (open) Power supply is supplied (close)
Cut valve 2 Power supply is not supplied (open) Power supply is supplied (close)
Suction valve 1 Power supply is not supplied (close) Power supply is not supplied (close)
Suction valve 2 Power supply is not supplied (close) Power supply is not supplied (close)
ABS IN valve Power supply is not supplied (open) Power supply is not supplied (open)
ABS OUT valve Power supply is not supplied (close) Power supply is not supplied (close)
Each brake caliper and wheel cylinder (fluid
pressure) —
Pressure holds
JSFIA0678GB
Revision: August 2015 2016 Versa Note

cardiagn.com

SYSTEMBRC-15
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
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Front RH brake caliper• Since the suction valve 1 and the ABS OUT valve are closed and the cut valve 1 and the ABS IN valve are open, the fluid pressure applied on the front RH brake ca liper is reduced by supplying the fluid pressure to
the master cylinder via the ABS IN valve and the cut valv e 1. The pressurization for the right caliper is con-
trolled separately from the left caliper.
Front LH brake caliper
• Since the suction valve 2 and the ABS OUT valve are closed and the cut valve 2 and the ABS IN valve are open, the fluid pressure applied on the front LH brake caliper is reduced by supplying the fluid pressure to
the master cylinder via the ABS IN valve and the cut valv e 2. The pressurization for the left caliper is con-
trolled separately from the right caliper.
Rear RH wheel cylinder• Since the suction valve 2 and the ABS OUT valve are closed and the cut valve 2 and the ABS IN valve are open, the fluid pressure applied on the rear RH wheel cylinder is reduced by supplying the fluid pressure to
the master cylinder via the ABS IN valve and the cut va lve 2. The pressurization for the right wheel cylinder
is controlled separately from the left wheel cylinder.
Rear LH wheel cylinder• Since the suction valve 1 and the ABS OUT valve are closed and the cut valve 1 and the ABS IN valve are open, the fluid pressure applied on the rear LH wheel cylinder is reduced by supplying the fluid pressure to
the master cylinder via the ABS IN valve and the cut valv e 1. The pressurization for the left wheel cylinder is
controlled separately from the right wheel cylinder.
Component Parts and Function
VALVE OPERATION (ABS AND EBD FUNCTIONS)
The control unit built into the ABS actuator and electric unit (control unit) controls fluid pressure of the brake
calipers by operating each valve.
Name Not activatedDuring pressure decreases
Cut valve 1 Power supply is not supplied (open) Power supply is not supplied (open)
Cut valve 2 Power supply is not supplied (open) Power supply is not supplied (open)
Suction valve 1 Power supply is not supplied (close) Power supply is not supplied (close)
Suction valve 2 Power supply is not supplied (close) Power supply is not supplied (close)
ABS IN valve Power supply is not supplied (open) Power supp ly is not supplied (open)
ABS OUT valve Power supply is not supplie d (close) Power supply is not supplied (close)
Each brake caliper and each wheel cylinder
(fluid pressure) —
Pressure decreases
Component Function
Pump Returns the brake fluid reserved in reservoir to master cylinder by reducing pressure.
Motor Activates the pump according to signals from ABS actuator and electric unit (control unit).
Cut valve 1
Cut valve 2 Shuts off the ordinary brake line from master cylinder.
Suction valve 1
Suction valve 2 Supplies the brake fluid from master cylinder to the pump.
ABS IN valve Switches the fluid pressure line to increase or hold according to signals from control unit.
ABS OUT valve Switches the fluid pressure line to increase, hold or decrease according to signals from control unit.
Return check valve Returns the brake fluid from brake caliper and wheel cylinder to master cylinder by bypassing orifice
of each valve when brake is released.
Reservoir Temporarily reserves the brake fluid drained from brake caliper, so that pressure efficiently decreas-
es when decreasing pressure of brake caliper and wheel cylinder.
Pressure sensor Detects the brake fluid pressure and tr ansmits signal to ABS ac tuator and electric unit (control unit).
Revision: August 2015 2016 Versa Note

cardiagn.com

BRC-16
< SYSTEM DESCRIPTION >[VDC/TCS/ABS]
SYSTEM
Brake Pedal Applied or ABS Function
Operating (Pressure Increases)
Front RH brake caliper• When the cut valve 1 and the ABS IN valve opens, brake fluid is supplied to the front RH brake caliper from
the master cylinder through the ABS IN valve. Brake fl uid does not flow into the reservoir because the ABS
OUT valve is closed.
Front LH brake caliper• When the cut valve 2 and the ABS IN valve opens, brake fluid is supplied to the front LH brake caliper from the master cylinder through the ABS IN valve. Brake fl uid does not flow into the reservoir because the ABS
OUT valve is closed.
Rear RH wheel cylinder
• When the cut valve 2 and the ABS IN valve opens, brake fluid is supplied to the rear RH wheel cylinder from the master cylinder through the ABS IN valve. Brake fl uid does not flow into the reservoir because the ABS
OUT valve is closed.
Rear LH wheel cylinder
• When the cut valve 1 and the ABS IN valve opens, brake fl uid is supplied to the rear LH wheel cylinder from
the master cylinder through the ABS IN valve. Brake fl uid does not flow into the reservoir because the ABS
OUT valve is closed.
JSFIA0679GB
Name Not activatedDuring pressure increases
Cut valve 1 Power supply is not supplied (open) Power supply is not supplied (open)
Cut valve 2 Power supply is not supplied (open) Power supply is not supplied (open)
Suction valve 1 Power supply is not supplied (close) Power supply is not supplied (close)
Suction valve 2 Power supply is not supplied (close) Power supply is not supplied (close)
ABS IN valve Power supply is not supplied (open) Power supply is not supplied (open)
ABS OUT valve Power supply is not supplied (close) Power supply is not supplied (close)
Each brake caliper and each wheel cylinder
(fluid pressure) —
Pressure increases
Revision: August 2015 2016 Versa Note

cardiagn.com

SYSTEMBRC-17
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
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ABS Function Starts Oper
ating (Pressure Holds)
Front RH brake caliper• Since the ABS IN valve and the ABS OUT valve are closed, the front RH brake caliper, master cylinder, and
reservoir are blocked. This maintains fluid pressure applied on the front RH brake caliper.
Front LH brake caliper• Since the ABS IN valve and the ABS OUT valve are cl osed, the front LH brake caliper, master cylinder, and
reservoir are blocked. This maintains fluid pressure applied on the front LH brake caliper.
Rear RH wheel cylinder• Since the ABS IN valve and the ABS OUT valve are cl osed, the rear RH wheel cylinder, master cylinder, and
reservoir are blocked. This maintains fluid pressure applied on the rear RH wheel cylinder.
Rear LH wheel cylinder• Since the ABS IN valve and the ABS OUT valve are cl osed, the rear LH wheel cylinder, master cylinder, and
reservoir are blocked. This maintains fluid pressure applied on the rear LH wheel cylinder.
JSFIA0680GB
Name Not activatedDuring pressure holds
Cut valve 1 Power supply is not supplied (open) Power supply is not supplied (open)
Cut valve 2 Power supply is not supplied (open) Power supply is not supplied (open)
Suction valve 1 Power supply is not supplied (close) Power supply is not supplied (close)
Suction valve 2 Power supply is not supplied (close) Power supply is not supplied (close)
ABS IN valve Power supply is not supplied (open) Po wer supply is supplied (close)
ABS OUT valve Power supply is not supplie d (close) Power supply is not supplied (close)
Each brake caliper and each wheel cylinder
(fluid pressure) —
Pressure holds
Revision: August 2015 2016 Versa Note

cardiagn.com

BRC-18
< SYSTEM DESCRIPTION >[VDC/TCS/ABS]
SYSTEM
ABS Function Operating
(Pressure Decreases)
Front RH brake caliper• Since the ABS IN valve is closed and the ABS OUT valve is opened, fluid pressure applied on the front RH
brake caliper is supplied to the reservoir through the ABS OUT valve. This fluid pressure decreases when
sent to the master cylinder by the pump.
Front LH brake caliper• Since the ABS IN valve is closed and the ABS OUT valve is opened, fluid pressure applied on the front LH brake caliper is supplied to the reservoir through the ABS OUT valve. This fluid pressure decreases when
sent to the master cylinder by the pump.
Rear RH wheel cylinder
• Since the ABS IN valve is closed and the ABS OUT valve is opened, fluid pressure applied on the rear RH wheel cylinder is supplied to the reservoir through the ABS OUT valve. This fluid pressure decreases when
sent to the master cylinder by the pump.
Rear LH wheel cylinder
• Since the ABS IN valve is closed and the ABS OUT valve is opened, fluid pressure applied on the rear LH
wheel cylinder is supplied to the reservoir through the ABS OUT valve. This fluid pressure decreases when
sent to the master cylinder by the pump.
JSFIA0681GB
Name Not activatedDuring pressure decreases
Cut valve 1 Power supply is not supplied (open) Power supply is not supplied (open)
Cut valve 2 Power supply is not supplied (open) Power supply is not supplied (open)
Suction valve 1 Power supply is not supplied (close) Power supply is not supplied (close)
Suction valve 2 Power supply is not supplied (close) Power supply is not supplied (close)
ABS IN valve Power supply is not supplied (open) Power supply is supplied (close)
ABS OUT valve Power supply is not supplied (close) Power supply is supplied (open)
Each brake caliper and each wheel cylinder
(fluid pressure) —
Pressure decreases
Revision: August 2015 2016 Versa Note

cardiagn.com

SYSTEMBRC-19
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
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ABS Function Operating
(Pressure Increases)
Front RH brake caliper• Brake fluid is supplied to the front RH brake caliper from the master cylinder through the cut valve 1 and the
ABS IN valve. Since the suction valve 1 and the ABS OU T valve is closed, the fluid does not flow into the
reservoir. The amount of brake fluid supplied to the fr ont RH brake caliper from the master cylinder is con-
trolled according to time that the ABS IN valve is not energized (time that the ABS IN valve is open).
Front LH brake caliper
• Brake fluid is supplied to the front LH brake caliper from the master cylinder through the cut valve 2 and the
ABS IN valve. Since the suction valve 2 and the ABS OU T valve is closed, the fluid does not flow into the
reservoir. The amount of brake fluid supplied to the fr ont LH brake caliper from the master cylinder is con-
trolled according to time that the ABS IN valve is not energized (time that the ABS IN valve is open).
Rear RH wheel cylinder• Brake fluid is supplied to the rear RH wheel cylinder from the master cylinder through the cut valve 2 and the
ABS IN valve. Since the suction valve 2 and the ABS OU T valve is closed, the fluid does not flow into the
reservoir. The amount of brake fluid supplied to the r ear RH wheel cylinder from the master cylinder is con-
trolled according to time that the ABS IN valve is not energized (time that the ABS IN valve is open).
Rear LH wheel cylinder
• Brake fluid is supplied to the rear LH wheel cylinder from the master cylinder through the cut valve 1 and the
ABS IN valve. Since the suction valve 1 and the ABS OU T valve is closed, the fluid does not flow into the
JSFIA0679GB
NameNot activatedDuring pressure increases
Cut valve 1 Power supply is not supplied (open) Power supply is not supplied (open)
Cut valve 2 Power supply is not supplied (open) Power supply is not supplied (open)
Suction valve 1 Power supply is not supplied (close) Power supply is not supplied (close)
Suction valve 2 Power supply is not supplied (close) Power supply is not supplied (close)
ABS IN valve Power supply is not supplied (open) Power supp ly is not supplied (open)
ABS OUT valve Power supply is not supplie d (close) Power supply is not supplied (close)
Each brake caliper and each wheel cylinder
(fluid pressure) —
Pressure increases
Revision: August 2015 2016 Versa Note

cardiagn.com