Nissan Leaf. Manual - part 339

BRC-146

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

BRAKE WARNING LAMP

YES

>> Replace ABS actuator and electric unit (control unit). Refer to 

BRC-162, "Removal and Installa-

tion"

.

NO

>> Repair or replace combination meter. Refer to 

MWI-102, "Removal and Installation"

.

VDC WARNING LAMP

BRC-147

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

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VDC WARNING LAMP

Component Function Check

INFOID:0000000010120117

1.

CHECK VDC WARNING LAMP FUNCTION

Check that VDC warning lamp in combination meter turns ON for several seconds after power switch is turned

ON.

CAUTION:

Never set the vehicle to READY.
Is the inspection result normal?

YES

>> Inspection End.

NO

>> Proceed to diagnosis procedure. Refer to 

BRC-147, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010120118

1.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY AND GROUND CIR-

CUIT

Perform the trouble diagnosis for ABS actuator and electric unit (control unit) power supply and ground circuit.

Refer to 

BRC-137, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

PERFORM SELF DIAGNOSTIC

With CONSULT

1. Turn the power switch OFF 

→ ON.

CAUTION:

• Be sure to wait of 10 seconds after turning power switch OFF or ON.

• Set the vehicle to READY.

2. Repeat step 1 two or more times.

3. Perform “Self Diagnostic Result” of “ABS”.
Is any DTC detected?

YES

>> Check the DTC. Refer to 

BRC-56, "DTC Index"

.

NO

>> GO TO 3.

3.

CHECK VDC WARNING LAMP SIGNAL

With CONSULT

1. Select “ABS”, “Data Monitor” and “SLIP/VDC LAMP” according to this order.

2. Turn the power switch OFF.

3. Check that data monitor displays “On” for approx. several seconds after power switch is turned ON, and

then changes to “Off”.

CAUTION:

Never set the vehicle to READY.

Is the inspection result normal?

YES

>> Check the combination meter. Refer to 

MWI-49, "CONSULT Function (METER/M&A)"

.

NO

>> Replace ABS actuator and electric unit (control unit). Refer to 

BRC-162, "Removal and Installa-

tion"

.

BRC-148

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

VDC OFF INDICATOR LAMP

VDC OFF INDICATOR LAMP

Component Function Check

INFOID:0000000010120119

1.

CHECK VDC OFF INDICATOR LAMP FUNCTION (1)

Check that VDC OFF indicator lamp in combination meter turns ON for several seconds after power switch is

turned ON.

CAUTION:

Never set the vehicle to READY.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Proceed to diagnosis procedure. Refer to 

BRC-148, "Diagnosis Procedure"

.

2.

CHECK VDC OFF INDICATOR LAMP FUNCTION (2)

Check that VDC OFF indicator lamp in combination meter turns ON/OFF when VDC OFF switch is operated.
Is the inspection result normal?

YES

>> Inspection End.

NO

>> Check the VDC OFF switch system. Refer to 

BRC-140, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010120120

1.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY AND GROUND CIR-

CUIT
Perform the trouble diagnosis for ABS actuator and electric unit (control unit) power supply and ground circuit.

Refer to 

BRC-137, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK VDC OFF INDICATOR LAMP SIGNAL (1)

With CONSULT

1. Select “ABS”, “Data Monitor” and “OFF LAMP” according to this order.

2. Turn the power switch OFF.

3. Check that data monitor displays “On” for several seconds after power switch is turned ON, and then

changes to “Off”.

CAUTION:

Never set the vehicle to READY.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace ABS actuator and electric unit (control unit). Refer to 

BRC-162, "Removal and Installa-

tion"

.

3.

CHECK VDC OFF INDICATOR LAMP SIGNAL (2)

With CONSULT

1. Select “ABS”, “Data Monitor” and “OFF LAMP” according to this order.

2. Check that data monitor displays “On” or “Off” each time when VDC OFF switch is operated.
Is the inspection result normal?

YES

>> Check the combination meter. Refer to 

MWI-49, "CONSULT Function (METER/M&A)"

.

NO

>> Check the VDC OFF switch system. Refer to 

BRC-140, "Diagnosis Procedure"

.

EXCESSIVE OPERATION FREQUENCY

BRC-149

< SYMPTOM DIAGNOSIS >

[WITH VDC]

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SYMPTOM DIAGNOSIS

EXCESSIVE OPERATION FREQUENCY

Description

INFOID:0000000010120121

VDC function, TCS function, ABS function, EBD function, brake limited slip differential (BLSD) function and

brake assist function operates in excessive operation frequency.

Diagnosis Procedure

INFOID:0000000010120122

1.

CHECK BRAKING FORCE

Check the brake force using a brake tester.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Check the brake system.

2.

CHECK AXLE

Check that there is no excessive looseness in front axle and rear axle.

• Front axle: Refer to 

FAX-7, "Inspection"

.

• Rear axle: Refer to 

RAX-6, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK WHEEL SENSOR

Check the wheel sensor.

• Check the installation and damage of wheel sensor.

• Check the connection of wheel sensor harness connector.

• Check the terminal of wheel sensor harness connector.
Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace wheel sensor.

• Front wheel sensor: Refer to 

BRC-158, "FRONT WHEEL SENSOR : Removal and Installation"

.

• Rear wheel sensor: Refer to 

BRC-159, "REAR WHEEL SENSOR : Removal and Installation"

.

4.

CHECK SENSOR ROTOR

Check that there is no looseness, damage or foreign material on sensor rotor.
Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair installation or replace sensor rotor.

• Front sensor rotor: Refer to 

BRC-161, "FRONT SENSOR ROTOR : Removal and Installation"

.

• Rear sensor rotor. Refer to 

BRC-161, "REAR SENSOR ROTOR : Removal and Installation"

.

5.

CHECK WARNING LAMP TURNS OFF

Check that ABS warning lamp, brake warning lamp and VDC warning lamp turn OFF approx. 1 second after

power switch is turned ON and stay in OFF status during driving.

CAUTION:

Brake warning lamp turns ON when brake fluid is less than the specified level (brake fluid level switch

is ON).
Is the inspection result normal?

YES

>> Normal

NO

>> GO TO 6.

6.

PERFORM SELF DIAGNOSTIC

With CONSULT

1. Turn the power switch OFF 

→ ON.

CAUTION: