Content .. 104 105 106 107 ..

Nissan Versa Sedan. Instruction - part 106

SYSTEM

BRC-17

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

BRC

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 fluid 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 fluid 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 fluid 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 fluid is supplied to the rear LH wheel cylinder from

the master cylinder through the ABS IN valve. Brake fluid does not flow into the reservoir because the ABS

OUT valve is closed.

JSFIA0679GB

Name

Not activated

During pressure increases

Cut valve 1

Power supply is not supplied (open)

Cut valve 2

Power supply is not supplied (open)

Suction valve 1

Power supply is not supplied (close)

Suction valve 2

Power supply is not supplied (close)

ABS IN valve

Power supply is not supplied (open)

ABS OUT valve

Power supply is not supplied (close)

Each brake caliper and each wheel cylinder
(fluid pressure)

—

Pressure increases

BRC-18

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

SYSTEM

ABS Function Starts Operating (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 closed, 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 closed, 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 closed, 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 activated

During pressure holds

Cut valve 1

Power supply is not supplied (open)

Cut valve 2

Power supply is not supplied (open)

Suction valve 1

Power supply is not supplied (close)

Suction valve 2

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)

Each brake caliper and each wheel cylinder
(fluid pressure)

—

Pressure holds

SYSTEM

BRC-19

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

BRC

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 activated

During pressure decreases

Cut valve 1

Power supply is not supplied (open)

Cut valve 2

Power supply is not supplied (open)

Suction valve 1

Power supply is not supplied (close)

Suction valve 2

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

BRC-20

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

SYSTEM

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 OUT valve is closed, the fluid does not flow into the

reservoir. The amount of brake fluid supplied to the front 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 OUT valve is closed, the fluid does not flow into the

reservoir. The amount of brake fluid supplied to the front 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 OUT valve is closed, the fluid does not flow into the

reservoir. The amount of brake fluid supplied to the rear 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 OUT valve is closed, the fluid does not flow into the

JSFIA0679GB

Name

Not activated

During pressure increases

Cut valve 1

Power supply is not supplied (open)

Cut valve 2

Power supply is not supplied (open)

Suction valve 1

Power supply is not supplied (close)

Suction valve 2

Power supply is not supplied (close)

ABS IN valve

Power supply is not supplied (open)

ABS OUT valve

Power supply is not supplied (close)

Each brake caliper and each wheel cylinder
(fluid pressure)

—

Pressure increases

Content .. 104 105 106 107 ..