Nissan Leaf. Manual - part 176

SYSTEM

BR-25

< SYSTEM DESCRIPTION >

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- For Canada

• The brake system warning lamp warns the driver of malfunction in hill start assist function.

NOTE:

The brake system warning lamp may turn ON simultaneously with the brake warning lamp. For details, refer to

BR-14, "System Description"

.

BULB CHECK

Several seconds after power switch is turned ON

SYNCHRONIZATION WITH WARNING BUZZER

YES

For warning buzzer, refer to 

BR-13, "Warning Buzzer"

SYNCHRONIZATION WITH MASTER WARNING LAMP

Not applicable

OPERATION AT COMBINATION METER CAN COMMUNICATION CUT-OFF OR UNUSUAL SIG-
NAL

For actions on CAN communications blackout in the combination meter, refer to 

MWI-15, "METER SYSTEM :

Fail-Safe"

.

SYSTEM DIAGRAM

*: For DTCs that the brake system warning lamp turns ON, refer to 

BR-38, "DTC Index"

 (electrically-driven

intelligent brake unit) or 

BRC-56, "DTC Index"

 [ABS actuator and electric unit (control unit)].

SIGNAL PATH

• The electrically-driven intelligent brake unit transmits a brake system warning lamp request signal to the

ABS actuator and electric unit (control unit) via CAN communication when detecting a malfunction in the

electrically-driven intelligent brake unit.

• The ABS actuator and electric unit (control unit) receiving a brake system warning lamp request signal, and

transmits a brake system warning lamp signal to the combination meter via CAN communication.

JPNIA1872ZZ

JSFIA1850GB

BR-26

< SYSTEM DESCRIPTION >

SYSTEM

• The combination meter turns ON the brake system warning lamp when receiving a brake system warning

lamp signal.

• For the relationship between warning lamp and DTC, refer to 

BR-38, "DTC Index"

.

LIGHTING CONDITION

When any of the condition listed below is satisfied while the power switch ON:

• A malfunction is detected in the electrically-driven intelligent brake unit or the brake power supply backup

unit.

• A malfunction is detected in the hill start assist function.

• For the relationship between warning lamp and DTC, refer to 

BR-38, "DTC Index"

.

SHUTOFF CONDITION

• When the condition listed below is satisfied while the power switch ON:

- Erase  DTC

• Power switch OFF

TIMING CHART

WARNING/INDICATOR/CHIME LIST : Brake Warning Lamp (Red)

INFOID:0000000010122992

DESIGN/PURPOSE

• The brake warning lamp warns the driver of brake fluid shortages.

- For U.S.A.

- For Canada

JSFIA1851GB

JPNIA1873ZZ

JPNIA1872ZZ

SYSTEM

BR-27

< SYSTEM DESCRIPTION >

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• The brake warning lamp warns the driver that the parking brake is engaged.

• The brake warning lamp warns the driver of a malfunction in the ABS actuator and electric unit (control unit).

• The brake warning lamp warns the driver of a malfunction in the electrically-driven intelligent brake unit.

NOTE:

The brake warning lamp may turn ON simultaneously with the ABS warning lamp, VDC warning lamp. For

details, refer to 

BRC-16, "System Description"

 (ABS warning lamp, VDC warning lamp) and 

BR-14, "System

Description"

 (brake system warning lamp).

BULB CHECK

Several seconds after power switch is turned ON

SYNCHRONIZATION WITH WARNING CHIME

YES

For warning chime, refer to 

WCS-11, "PARKING BRAKE RELEASE WARNING CHIME : Parking Brake

Release Warning Chime"

MASTER WARNING LAMP WITH WARNING CHIME

Not applicable

OPERATION AT COMBINATION METER CAN COMMUNICATION CUT-OFF OR UNUSUAL SIG-
NAL

For actions on CAN communications blackout in the combination meter, refer to 

MWI-15, "METER SYSTEM :

Fail-Safe"

.

SYSTEM DIAGRAM

*: For DTCs that the brake system warning lamp turns ON, refer to 

BR-38, "DTC Index"

 (electrically-driven

intelligent brake unit) or 

BRC-56, "DTC Index"

 [ABS actuator and electric unit (control unit)].

SIGNAL PATH

When Brake Fluid Is Insufficient

The combination meter turns ON/OFF the brake warning lamp, according to the ON/OFF state of the brake

fluid level switch.

When Operating The Parking Brake

The combination meter turns ON/OFF the brake warning lamp, according to the ON/OFF state of the parking

brake switch.

When The EBD Function Is In Abnormal State

• The ABS actuator and electric unit (control unit) transmits a brake warning lamp signal to the combination

meter via CAN communication when detecting a malfunction in the EBD function.

• The combination meter turns ON the brake warning lamp when receiving a brake warning lamp signal.

• For the relationship between warning lamp and DTC, refer to 

BRC-56, "DTC Index"

.

When The Electrically-driven Intelligent Brake Unit Is In Abnormal State

JSFIA1852GB

BR-28

< SYSTEM DESCRIPTION >

SYSTEM

• The electrically-driven intelligent brake unit transmits a brake warning lamp request signal to the ABS actua-

tor and electric unit (control unit) via CAN communication when detecting a malfunction in the electrically-

driven intelligent brake unit.

• The ABS actuator and electric unit (control unit) receiving a brake warning lamp request signal, and trans-

mits a brake system warning lamp signal to the combination meter via CAN communication.

• The combination meter turns ON the brake system warning lamp when receiving a brake system warning

lamp signal.

• For the relationship between warning lamp and DTC, refer to 

BR-38, "DTC Index"

.

LIGHTING CONDITION

When any of the condition listed below is satisfied while the power switch ON:

• Brake fluid level switch ON.

• Parking switch ON.

• A malfunction is detected in the EBD function of the ABS actuator and electric unit (control unit).

• A malfunction is detected in the electrically-driven intelligent brake unit.

• For the relationship between warning lamp and DTC, refer to 

BR-38, "DTC Index"

 (electrically-driven intelli-

gent brake unit) or 

BRC-56, "DTC Index"

 [ABS actuator and electric unit (control unit)].

SHUTOFF CONDITION

• When the condition listed below is satisfied while the power switch ON:

- Brake fluid level switch is OFF.

- Parking brake switch is OFF.

- Erase  DTC

• Power switch OFF

TIMING CHART

JSFIA1853GB