Nissan Qashqai (2007-2010). Manual — part 739

BRC-154

< ECU DIAGNOSIS >

[ESP/TCS/ABS]

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

SIDE G-SENSOR

Transverse G detected by side G sensor

Vehicle stopped

Approx. 0 m/s

2

Vehicle turning right

Negative value

(m/s

2

)

Vehicle turning left

Positive value

(m/s

2

)

STR ANGLE SIG

Steering angle detected by steering angle
sensor

Straight-ahead

Approx. 0

°

Steering wheel turned

–720 to 720

°

PRESS SENSOR

Brake fluid pressure detected by pressure
sensor

With ignition switch turned ON and
brake pedal released

Approx. 3 bar

With ignition switch turned ON and
brake pedal depressed

0 to 200 bar

ENGINE RPM

With engine running

With engine stopped

0 tr/min

Engine running

Almost in accor-
dance with tachome-
ter display

FLUID LEV SW

Brake fluid level switch signal status

When brake fluid level switch ON

ON

When brake fluid level switch OFF

OFF

PARK BRAKE SW

Parking brake switch signal status

Parking brake switch is active

ON

Parking brake switch is inactive

OFF

FR RH IN SOL

Operation status of front RH inlet solenoid
valve

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actu-
ator relay is inactive (in fail-safe mode)

ON

When the actuator (solenoid valve) is
not active and actuator relay is active
(ignition switch ON)

OFF

FR RH OUT SOL

Operation status of front RH outlet solenoid
valve

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actu-
ator relay is inactive (in fail-safe mode)

ON

When the actuator (solenoid valve) is
not active and actuator relay is active
(ignition switch ON)

OFF

FR LH IN SOL

Operation status of front LH inlet solenoid
valve

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actu-
ator relay is inactive (in fail-safe mode)

ON

When the actuator (solenoid valve) is
not active and actuator relay is active
(ignition switch ON)

OFF

FR LH OUT SOL

Operation status of front RH inlet solenoid
valve

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actu-
ator relay is inactive (in fail-safe mode)

ON

When the actuator (solenoid valve) is
not active and actuator relay is active
(ignition switch ON)

OFF

RR RH IN SOL

Operation status of rear RH inlet solenoid
valve

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actu-
ator relay is inactive (in fail-safe mode)

ON

When the actuator (solenoid valve) is
not active and actuator relay is active
(ignition switch ON)

OFF

Monitor item

Condition

Value/Status

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

BRC-155

< ECU DIAGNOSIS >

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

NOTE:

• 1: Confirm tire pressure is normal.

• 2: Every 20 seconds momentary switch to OFF.

• 3: On and off timing for warning lamp and indicator lamp.

- ABS warning lamp:

BRC-149, "Description"

.

- ESP OFF indicator lamp:

BRC-151, "Description"

.

- SLIP indicator lamp:

BRC-152, "Description"

.

Wiring Diagram - BRAKE CONTROL SYSTEM -

INFOID:0000000000924917

RR RH OUT SOL

Operation status of rear RH outlet solenoid
valve

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actu-
ator relay is inactive (in fail-safe mode)

ON

When the actuator (solenoid valve) is
not active and actuator relay is active
(ignition switch ON)

OFF

RR LH IN SOL

Operation status of rear LH inlet solenoid
valve

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actu-
ator relay is inactive (in fail-safe mode)

ON

When the actuator (solenoid valve) is
not active and actuator relay is active
(ignition switch ON)

OFF

RR LH OUT SOL

Operation status of rear RH inlet solenoid
valve

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actu-
ator relay is inactive (in fail-safe mode)

ON

When the actuator (solenoid valve) is
not active and actuator relay is active
(ignition switch ON)

OFF

MOTOR RELAY

Motor and motor relay operation

When the motor relay and motor are op-
erating

ON

When the motor relay and motor are not
operating

OFF

ACTUATOR RLY

NOTE 2

Actuator relay operation

When the actuator relay is operating

ON

When the actuator relay is not operating

OFF

ABS WARN LAMP

ABS warning lamp

NOTE 3

When ABS warning lamp is ON

ON

When ABS warning lamp is OFF

OFF

OFF LAMP

ESP OFF indicator lamp

NOTE 3

When ESP OFF indicator lamp is ON

ON

When ESP OFF indicator lamp is OFF

OFF

SLIP LAMP

SLIP indicator lamp

NOTE 3

When SLIP indicator lamp is ON

ON

When SLIP indicator lamp is OFF

OFF

Monitor item

Condition

Value/Status

BRC-156

< ECU DIAGNOSIS >

[ESP/TCS/ABS]

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

JCFWA0027GB

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

BRC-157

< ECU DIAGNOSIS >

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

JCFWA0028GB