Infiniti M35/M45 Y50. Manual - part 335

 

  Index      Infiniti     Infiniti M35/M45 Y50 - service repair manual 2007 year

 

Search            copyright infringement  

 

 

 

 

 

 

 



  

 

Content   ..  333  334  335  336   ..

 

 

Infiniti M35/M45 Y50. Manual - part 335

 

 

TROUBLE DIAGNOSIS FOR SYSTEM

BRC-41

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

4. 

CHECK STOP LAMP SWITCH CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect stop lamp switch connector E124 and ABS actuator and electric unit (control unit) connector
E30.

3.

Check continuity between stop lamp switch harness connector and ABS actuator and electric unit (control
unit) harness connector. 

OK or NG

OK

>> GO TO 5.

NG

>> Open or short in harness between stop lamp switch and ABS actuator and electric unit (control

unit). Repair or replace applied harness.

5. 

CHECK PRESSURE SENSOR

1.

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

2.

Perform “DATA MONITOR” of the “PRESS SENSOR” to check if the status is normal.

OK or NG

OK

>> INSPECTION END

NG

>> If the pressure sensor is damaged or malfunctioning, replace the ABS actuator and electric unit

(control unit).

Steering Angle Sensor Circuit

NFS000QS

INSPECTION PROCEDURE

1. 

CHECK SELF-DIAGNOSIS RESULTS

Check self-diagnosis results.

Is above displayed on the self-diagnosis display?

YES

>> GO TO 2.

NO

>> INSPECTION END

2. 

CHECK CONNECTOR

1.

Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E30,
check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or
replace terminal.

2.

Reconnect connector and perform self-diagnosis.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 3.

ABS actuator and electric unit (control unit)

Stop lamp switch

Continuity

30

4

Yes

Condition

Data monitor display

When brake pedal is depressed.

−

40 to 300 bar

When brake pedal is released.

Approx. 0 bar

Self-diagnosis results

ST ANG SEN CIRCUIT

BRC-42

[VDC/TCS/ABS]

TROUBLE DIAGNOSIS FOR SYSTEM

3. 

CHECK STEERING ANGLE SENSOR HARNESS

1.

Check CAN communication system. Refer to 

BRC-48, "CAN Communication Circuit"

 .

2.

Turn ignition switch OFF and disconnect steering angle sensor connector.

3.

Check continuity between steering angle sensor harness con-
nector M47 terminal 2 and ground.

4.

Turn ignition switch ON and check voltage between steering
angle sensor harness connector M47 terminal 3 and ground.

OK or NG

OK

>> GO TO 4.

NG

>>

●

Repair or replace malfunctioning components.

●

Perform the self-diagnosis, and make sure that the
result shows “NO DTC IS DETECTED”.

4. 

CHECK DATA MONITOR

1.

Turn ignition switch OFF and connect the steering angle sensor connector and ABS actuator and electric
unit (control unit) connector.

2.

Select “STR ANGLE SIG” in “DATA MONITOR” and check steering angle sensor signal.

OK or NG

OK

>> Perform self-diagnosis.

NG

>>

●

Replace spiral cable (steering angle sensor) and adjust neutral position of steering angle sen-
sor. Refer to 

BRC-6, "Adjustment of Steering Angle Sensor Neutral Position"

 . 

●

Perform the self-diagnosis, and make sure that the result shows “NO DTC IS DETECTED”.

Steering angle sensor

Ground

Continuity

2

—

Yes

SFIA2970E

Steering angle sensor

Ground

Voltage

3

—

Battery voltage

(Approx. 12 V)

SFIA2971E

Steering condition

STR ANGLE SIG (DATA MONITOR)

Driving straight

– 2.5 

°

 to + 2.5 

°

Turn 90

°

 to right

Approx. + 90 

°

Turn 90

°

 to left

Approx. – 90 

°

TROUBLE DIAGNOSIS FOR SYSTEM

BRC-43

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Stop Lamp Switch Circuit

NFS000QU

INSPECTION PROCEDURE

1. 

CHECK SELF-DIAGNOSIS RESULTS

Check self-diagnosis results.

Is above displayed on the self-diagnosis display?

YES

>> GO TO 2.

NO

>> INSPECTION END

2. 

CHECK CONNECTOR

1.

Turn ignition switch OFF and disconnect stop lamp switch connector E124 and ABS actuator and electric
unit (control unit) connector E30,   check terminal for deformation, disconnection, looseness, and so on. If
any malfunction is found, repair or replace terminal.

2.

Reconnect connectors securely.

3.

Start engine.

4.

Repeat pumping brake pedal carefully several times, and perform self-diagnosis.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 3.

3. 

CHECK STOP LAMP SWITCH CIRCUIT

1.

Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E30.

2.

Check voltage between ABS actuator and electric unit (control
unit) harness connector E30 terminal 30 and ground.

OK or NG

OK

>> Perform self-diagnosis.

NG

>>

●

Repair or replace stop lamp switch circuit.

●

Perform the self-diagnosis, and make sure that the result shows “NO DTC IS DETECTED”.

Self-diagnosis results

STOP LAMP SW

SFIA3038E

ABS actuator and electric unit (control unit)

Ground

Condition

Voltage

30

—

Brake pedal depressed

Battery voltage (Approx. 12 V)

Brake pedal not depressed

Approx. 0V

BRC-44

[VDC/TCS/ABS]

TROUBLE DIAGNOSIS FOR SYSTEM

Yaw Rate/Side G Sensor Circuit

NFS000QV

CAUTION:

●

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

●

If vehicle is on turn-table at entrance to parking garage, or on other moving surface, VDC OFF
indicator lamp may illuminate and CONSULT-II self-diagnosis may indicate yaw rate sensor sys-
tem malfunction. However, in this case there is no malfunction in yaw rate sensor system. Take
vehicle off of turn-table or other moving surface, and start engine. Results will return to normal.
And after doing spin turns or acceleration turns with VDC function is being off (VDC OFF switch
“ON”), too, the results will return to a normal condition by re-starting vehicle.

INSPECTION PROCEDURE

1. 

CHECK SELF-DIAGNOSIS RESULTS

Check self-diagnosis results.

Is above displayed on the self-diagnosis display?

YES

>> GO TO 2.

NO

>> INSPECTION END

2. 

CHECK CONNECTOR

1.

Turn ignition switch OFF and disconnect yaw rate/side G sensor connector M145 and ABS actuator and
electric unit (control unit) connector E30,   check terminal for deformation, disconnection, looseness, and
so on. If any malfunction is found, repair or replace terminal.

2.

Reconnect connector and perform self-diagnosis.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 3.

3. 

CHECK YAW RATE/SIDE G SENSOR POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF and disconnect yaw rate/side G sensor connector M145.

2.

Turn ignition switch ON or OFF and check voltage between yaw
rate/side G sensor harness connector M145 terminal 3 and
ground.

OK or NG

OK

>> GO TO 4.

NG

>>

●

Repair or replace malfunctioning components.

●

Perform the self-diagnosis, and make sure that the result shows “NO DTC IS DETECTED”.

Self-diagnosis results

YAW RATE SENSOR

SIDE G-SEN CIRCUIT

Yaw rate/side G sensor

Ground

Condition

Voltage

3

—

Ignition switch ON

Battery voltage

(Approx. 12 V)

Ignition switch OFF

Approx. 0 V

SFIA3044E

 

 

 

 

 

 

 

Content   ..  333  334  335  336   ..