Nissan Qashqai (2007-2010). Manual — part 708

BRC-30

< COMPONENT DIAGNOSIS >

[ABS]

C1111 ABS MOTOR, MOTOR RELAY SYSTEM

4.

Reconnect ABS actuator and electric unit (control unit) connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace malfunctioning components.

3.

ABS POWER SUPPLY CHECK (UNDER LOAD CONDITIONS)

Use 12V lamp (normal rating 10 to 20W) connected between E34 terminals 1 and 2. With ignition switch ON
check bulb illuminates correctly.
Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Check both power supply and ground circuit.

4.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ABS actuator and electric unit (control unit) connector.

3.

Check continuity between ABS actuator and electric unit (control unit) harness connector terminals and
ground.

Is the inspection result normal?

YES

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

NO

>> Repair or replace malfunctioning components. (Check ABS each bolt for tightness and corrosion).

Component Inspection

INFOID:0000000000924988

1.

CHECK ACTIVE TEST

1.

On “ACTIVE TEST”, select “ABS MOTOR”.

2.

Touch “ON” and “OFF” on screen. Make sure motor relay and actuator relay operates as shown in table
below.

NOTE:

A brief moment of ON/OFF condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is
an operation for checking.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to diagnosis procedure. Refer to

BRC-29, "Diagnosis Procedure"

.

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E34

2

Ground

Battery voltage

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E34

1, 4

Ground

Existed

Test item

Display item

Display

ON

OFF

ABS MOTOR

MOTOR RELAY

ON

OFF

ACTUATOR RLY

NOTE

ON

ON

C1113 G SENSOR

BRC-31

< COMPONENT DIAGNOSIS >

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

C1113 G SENSOR

Description

INFOID:0000000000936456

G sensor detects G affecting the vehicle, and transmits the data to the ABS actuator and electric unit (control
unit) as an analog voltage signal.

DTC Logic

INFOID:0000000000936457

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSIS RESULTS

Check the self-diagnosis results.

Is above displayed on the self-diagnosis display?

YES

>> Proceed to diagnosis procedure. Refer to

BRC-31, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000936458

INSPECTION PROCEDURE

1.

CHECK CONNECTOR

1.

Turn ignition switch OFF.

2.

Disconnect ABS actuator and electric unit (control unit) connector.

3.

Disconnect G sensor connector.

4.

Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or
replace terminal.

5.

Reconnect connectors and then perform the self-diagnosis. Refer to

BRC-17, "CONSULT-III Function

(ABS)"

.

Is any item indicated on the self-diagnosis display?

YES

>> GO TO 2.

NO

>> Poor connection of connector terminal. Replace or repair connector.

2.

CHECK G SENSOR POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect G sensor connector.

3.

Turn ignition switch ON or OFF and check voltage between G sensor harness connector terminal and
ground.

DTC

Display item

Malfunction detected condition

Possible cause

C1113

G SENSOR

G sensor is malfunctioning, or signal line of G sensor is
open or shorted.

• Harness or connector
• ABS actuator and electric unit

(control unit)

• G sensor
• Electrical interference
• Vehicle driven on 4WD rolling

road

Self-diagnosis results

G SENSOR

G sensor

—

Condition

Voltage

Connector

Terminal

M71

3

Ground

Ignition switch: ON

Battery voltage

Ground

Ignition switch: OFF

Approx. 0 V

BRC-32

< COMPONENT DIAGNOSIS >

[ABS]

C1113 G SENSOR

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace malfunctioning components.

3.

CHECK G SENSOR GROUND CIRCUIT

Check continuity between G sensor harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace malfunctioning components.

4.

CHECK G SENSOR HARNESS

1.

Disconnect ABS actuator and electric unit (control unit) connector.

2.

Check continuity between G sensor harness connector terminals and ABS actuator and electric unit (con-
trol unit) harness connector terminals.

Is the inspection result normal?

YES

>> Replace G sensor.

NO

>> Repair or replace malfunctioning components.

Component Inspection

INFOID:0000000000936459

1.

CHECK DATA MONITOR

Select “G SENSOR”, in “DATA MONITOR” and check G sensor signal.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to diagnosis procedure. Refer to

BRC-17, "CONSULT-III Function (ABS)"

.

G sensor

—

Continuity

Connector

Terminal

M71

1

Ground

Existed

ABS actuator and electric unit (control unit)

G sensor

Continuity

Connector

Terminal

Connector

Terminal

E34

14

M71

1

Existed

21

2

24

3

Monitor item

DATA MONITOR

G SENSOR

ON/OFF

C1114 ACTUATOR RELAY SYSTEM

BRC-33

< COMPONENT DIAGNOSIS >

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

C1114 ACTUATOR RELAY SYSTEM

Description

INFOID:0000000000924990

Activates or deactivates each solenoid valve according to the signals transmitted by the ABS actuator and
electric unit (control unit).

DTC Logic

INFOID:0000000000924991

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSIS RESULTS

Check the self-diagnosis results.

Is above displayed on the self-diagnosis display?

YES

>> Proceed to diagnosis procedure. Refer to

BRC-33, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000924992

INSPECTION PROCEDURE

1.

CHECK CONNECTOR

1.

Turn ignition switch OFF.

2.

Disconnect ABS actuator and electric unit (control unit) connector.

3.

Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or
replace terminal.

4.

Reconnect connector and then perform the self-diagnosis. Refer to

BRC-17, "CONSULT-III Function

(ABS)"

.

Is any item indicated on the self-diagnosis display?

YES

>> GO TO 2.

NO

>> Poor connection of connector terminal. Replace or repair connector.

2.

CHECK ACTUATOR RELAY POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ABS actuator and electric unit (control unit) connector.

3.

Check voltage between ABS actuator and electric unit (control unit) harness connector terminal and
ground.

4.

Reconnect ABS actuator and electric unit (control unit) connector.

Is the inspection result normal?

DTC

Display item

Malfunction detected condition

Possible cause

C1114

MAIN RELAY

During the actuator relay operating with OFF, when the
actuator relay turns ON, or when the control line for the
relay is shorted to the ground.

• Harness or connector
• ABS actuator and electric unit

(control unit)

During the actuator relay operating with ON, when the
actuator relay turns ON, or when the control line for the
relay is open.

Self-diagnosis results

MAIN RELAY

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E34

3

Ground

Battery voltage