Nissan Qashqai (2007-2010). Manual — part 734

BRC-134

< COMPONENT DIAGNOSIS >

[ESP/TCS/ABS]

C1145 YAW RATE SENSOR

3.

CHECK YAW RATE SENSOR POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect yaw rate sensor connector.

3.

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace malfunctioning components.

4.

CHECK YAW RATE SENSOR GROUND CIRCUIT

Check continuity between yaw rate sensor harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace malfunctioning components.

5.

CHECK YAW RATE SENSOR HARNESS

1.

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

2.

Check continuity between yaw rate sensor harness connector terminals and ABS actuator and electric
unit (control unit) harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace malfunctioning components.

6.

CHECK DATA MONITOR

1.

Connect the yaw rate sensor connector and ABS actuator and electric unit (control unit) connector.

2.

Select “YAW RATE SEN”, “SIDE G-SENSOR” in “DATA MONITOR” and check yaw rate sensor signal.

Is the inspection result normal?

YES

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

NO

>> Replace yaw rate sensor.

Component Inspection

INFOID:0000000000924880

Yaw rate sensor

—

Condition

Voltage

Connector

Terminal

M72

4

Ground

Ignition switch: ON

Battery voltage

Ignition switch: OFF

Approx. 0 V

Yaw rate sensor

—

Continuity

Connector

Terminal

M72

1

Ground

Existed

ABS actuator and electric unit (control unit)

Yaw rate sensor

Continuity

Connector

Terminal

Connector

Terminal

E36

14

M72

2

Existed

25

3

Vehicle condition

YAW RATE SEN

(DATA MONITOR)

Stopped

Approx. 0 d/s

Turning right

Negative value

Turning left

Positive value

C1145 YAW RATE SENSOR

BRC-135

< COMPONENT DIAGNOSIS >

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

1.

CHECK DATA MONITOR

Select “YAW RATE SEN” in “DATA MONITOR” and check yaw rate sensor signal.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to diagnosis procedure. Refer to

BRC-133, "Diagnosis Procedure"

.

Special Repair Requirement

INFOID:0000000000924881

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to

BRC-78, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Description"

.

>> END

Vehicle condition

YAW RATE SEN (DATA MONITOR)

Stopped

Approx. 0 d/s

Turning right

Negative value

turning left

Positive value

BRC-136

< COMPONENT DIAGNOSIS >

[ESP/TCS/ABS]

C1146 G SENSOR

C1146 G SENSOR

Description

INFOID:0000000000972968

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:0000000000972969

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-136, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000972970

CAUTION:

Sudden turns (such as spin turns, acceleration turns), drifting, etc., when VDC function is off (VDC
OFF switch “ON”) may cause G sensor system to indicate a malfunction. However, this is not a mal-
function, if normal operation can be resumed after restarting engine. Then erase memory of self-diag-
nosis.

INSPECTION PROCEDURE

1.

CHECK INSTALLATION STATE OF G SENSOR

Check G sensor is correctly attached to vehicle. Refer to

BRC-178, "Exploded View"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace malfunctioning parts.

2.

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-136, "Diagnosis Procedure"

.

Is any item indicated on the self-diagnosis display?

YES

>> GO TO 3.

NO

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

3.

CHECK G SENSOR HARNESS

1.

Turn ignition switch OFF.

2.

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

DTC

Display item

Malfunction detected condition

Possible cause

C1146

SIDE G-SEN CIRCUIT

Side G sensor is malfunctioning, or circuit of side G sen-
sor is open or shorted.

• Harness or connector
• ABS actuator and electric unit

(control unit)

• G sensor

Self-diagnosis results

SIDE G-SEN CIRCUIT

C1146 G SENSOR

BRC-137

< COMPONENT DIAGNOSIS >

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

3.

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

>> GO TO 4.

NO

>> Repair or replace malfunctioning components.

4.

CHECK DATA MONITOR

1.

Connect the G sensor connector and ABS actuator and electric unit (control unit) connector.

2.

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

Is the inspection result normal?

YES

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

NO

>> Replace G sensor.

Component Inspection

INFOID:0000000000972971

1.

CHECK DATA MONITOR

Select “SIDE 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-136, "Diagnosis Procedure"

.

Special Repair Requirement

INFOID:0000000000972972

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to

BRC-78, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Description"

.

>> END

ABS actuator and electric unit (control unit)

G sensor

Continuity

Connector

Terminal

Connector

Terminal

E36

14

M71

1

Existed

21

2

24

3

Vehicle condition

SIDE G-SENOR

(DATA MONITOR)

Stopped

Approx. 0 m/s

2

Turning right

Negative value

Turning left

Positive value

Vehicle condition

SIDE G-SENSOR (DATA MONITOR)

Stopped

Approx. 0 m/s

2

Turning right

Negative value

Turning left

Positive value