Nissan Leaf. Manual - part 315

BRC-50

< SYSTEM DESCRIPTION >

[WITH VDC]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

WORK SUPPORT

Test item

Display item

Display

On

Off

ABS MOTOR

MOTOR RELAY

On

Off

ACTUATOR RLY

On

On

Item

Description

ST ANGLE SENSOR ADJUSTMENT

Perform neutral position adjustment of steering angle sensor.

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

BRC-51

< ECU DIAGNOSIS INFORMATION >

[WITH VDC]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

ECU DIAGNOSIS INFORMATION

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

Reference Value

INFOID:0000000010120044

CONSULT DATA MONITOR STANDARD VALUE

NOTE:

The following table includes information (items) inapplicable to this vehicle. For information (items) applicable

to this vehicle, refer to CONSULT display items.

Monitor item

Condition

Reference values in normal operation

FR LH SENSOR

Vehicle stopped

0.00 km/h (MPH)

When driving straight ahead

*1

Nearly matches the speedometer dis-
play (within 

±10%)

FR RH SENSOR

Vehicle stopped

0.00 km/h (MPH)

When driving straight ahead

*1

Nearly matches the speedometer dis-
play (within 

±10%)

RR LH SENSOR

Vehicle stopped

0.00 km/h (MPH)

When driving straight ahead

*1

Nearly matches the speedometer dis-
play (within 

±10%)

RR RH SENSOR

Vehicle stopped

0.00 km/h (MPH)

When driving straight ahead

*1

Nearly matches the speedometer dis-
play (within 

±10%)

ACCEL POS SIG

Never depress accelerator pedal (with power switch 
ON)

0%

Depress accelerator pedal (with power switch ON)

0 – 100%

SIDE G-SENSOR

Vehicle stopped

Approx. 0 m/s

2

Turning right

Negative value

Turning left

Positive value

BATTERY VOLT

Power switch ON

10 – 16 V

DECEL G-SEN

When stopped

−0.11 – 0.11 G

During acceleration

Negative value

During deceleration

Positive value

STR ANGLE SIG

When driving straight

0

±2.5°

When steering wheel is steered to RH by 90

°

Approx. +90

°

When steering wheel is steered to LH by 90

°

Approx. 

−90°

PRESS SENSOR

Brake pedal not depressed

Approx. 0 bar

Brake pedal depressed

0 – 255 bar

YAW RATE SEN

Vehicle stopped

Approx. 0 d/s

Turning right

Negative value

Turning left

Positive value

FR RH IN SOL

*2

Active

On

Not activated

Off

FR RH OUT SOL

*2

Active

On

Not activated

Off

FR LH IN SOL

*2

Active

On

Not activated

Off

BRC-52

< ECU DIAGNOSIS INFORMATION >

[WITH VDC]

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

FR LH OUT SOL

*2

Active

On

Not activated

Off

RR RH IN SOL

*2

Active

On

Not activated

Off

RR RH OUT SOL

*2

Active

On

Not activated

Off

RR LH IN SOL

*2

Active

On

Not activated

Off

RR LH OUT SOL

*2

Active

On

Not activated

Off

EBD WARN LAMP

When brake warning lamp is ON

*3

On

When brake warning lamp is OFF

*3

Off

STOP LAMP SW

Brake pedal depressed

On

Brake pedal not depressed

Off

ABS WARN LAMP

When ABS warning lamp is ON

*3

On

When ABS warning lamp is OFF

*3

Off

MOTOR RELAY

Active

On

Not activated

Off

ACTUATOR RLY

Active

On

Not activated (in fail-safe mode)

Off

OFF LAMP

When VDC OFF indicator lamp is ON

*3

On

When VDC OFF indicator lamp is OFF

*3

Off

OFF SW

VDC OFF switch ON

On

VDC OFF switch OFF

Off

SLIP/VDC LAMP

When VDC warning lamp is ON

*3

On

When VDC warning lamp is OFF

*3

Off

EBD SIGNAL

EBD is activated

On

EBD is not activated

Off

ABS SIGNAL

ABS is activated

On

ABS is not activated

Off

TCS SIGNAL

TCS is activated

On

TCS is not activated

Off

VDC SIGNAL

VDC is activated

On

VDC is not activated

Off

EBD FAIL SIG

In EBD fail-safe

On

EBD is normal

Off

ABS FAIL SIG

In ABS fail-safe

On

ABS is normal

Off

TCS FAIL SIG

In TCS fail-safe

On

TCS is normal

Off

VDC FAIL SIG

In VDC fail-safe

On

VDC is normal

Off

GEAR

Driving

D, R, N/P

Monitor item

Condition

Reference values in normal operation

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

BRC-53

< ECU DIAGNOSIS INFORMATION >

[WITH VDC]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

*1: Confirm tire pressure is standard value.

*2: Refer to “valve operation” in 

BRC-16, "System Description"

   for valve operation of each valve.

*3: Refer to 

BRC-16, "System Description"

 for ON/OFF conditions of each warning lamp and indicator lamp.

Fail-safe

INFOID:0000000010120045

VDC FUNCTION, TCS FUNCTION, BRAKE LIMITED SLIP DIFFERENTIAL (BLSD) FUNCTION,
BRAKE ASSIST FUNCTION

VDC warning lamp in combination meter turn ON when a malfunction occurs in system [ABS actuator and

electric unit (control unit)]. The control is suspended for VDC function, TCS function, brake limited slip differen-

tial (BLSD) function and brake assist function. The vehicle status becomes the same as models without VDC

function, TCS function, brake limited slip differential (BLSD) function and brake assist function. However, ABS

function and EBD function are operated normally.

ABS FUNCTION

ABS warning lamp and VDC warning lamp in combination meter turn ON when a malfunction occurs in system

[ABS actuator and electric unit (control unit)]. The control is suspended for VDC function, TCS function, ABS

function, brake limited slip differential (BLSD) function and brake assist function. The vehicle status becomes

the same as models without VDC function, TCS function, ABS function, brake limited slip differential (BLSD)

function and brake assist function. However, EBD function is operated normally.

NOTE:

ABS self-diagnosis sound may be heard the same as in the normal condition, because self-diagnosis is per-

formed when power switch turns ON and when vehicle initially starts.

EBD FUNCTION

ABS warning lamp, brake warning lamp and VDC warning lamp in combination meter turn ON when a mal-

function occurs in system [ABS actuator and electric unit (control unit)]. The control is suspended for VDC

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

assist function. The vehicle status becomes the same as models without VDC function, TCS function, ABS

function, EBD function, brake limited slip differential (BLSD) function and brake assist function.

N POSI SIG

When selector lever is in the N position

On

When selector lever is in the other position than N

Off

P POSI SIG

When selector lever is in the P position

On

When selector lever is in the other position than P

Off

R POSI SIG

When selector lever is in the R position

On

When selector lever is in the other position than R

Off

FLUID LEV SW

When brake fluid level switch is ON (brake fluid level 
is less than the specified level)

On

When brake fluid level switch is OFF

Off

CV1

*2

Active

On

Not activated

Off

CV2

*2

Active

On

Not activated

Off

SV1

*2

Active

On

Not activated

Off

SV2

*2

Active

On

Not activated

Off

STOP LAMP SW2

Brake pedal depressed

On

Brake pedal not depressed

Off

Monitor item

Condition

Reference values in normal operation