Infiniti M35/M45 Y50. Manual - part 338

TROUBLE DIAGNOSIS FOR SYMPTOMS

BRC-53

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Vehicle Jerks During VDC/TCS/ABS Control

NFS000R9

1. 

SYMPTOM CHECK

Check if the vehicle jerks during VDC/TCS/ABS control.
OK or NG

OK

>> Normal.

NG

>> GO TO 2.

2. 

CHECK SELF-DIAGNOSIS RESULTS

Perform self-diagnostic of ABS actuator and electric unit (control unit).

Are self-diagnosis results indicated?

YES

>> Check corresponding items, make repairs, and perform ABS actuator and electric unit (control

unit) self-diagnosis.

NO

>> GO TO 3.

3. 

CHECK CONNECTOR

●

Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector and check
terminal for deformation, disconnection, looseness, etc.

●

Securely connect connectors and perform ABS actuator and electric unit (control unit) self-diagnosis.

Are self-diagnosis results indicated?

YES

>> If poor contact, damage, open or short circuit of connector terminal is found, repair or replace.

NO

>> GO TO 4.

4. 

CHECK ECM AND TCM SELF-DIAGNOSIS RESULTS

Perform ECM and TCM self-diagnosis.
Are self-diagnosis results indicated?

YES

>> Check the corresponding items.

●

ECM: Refer to 

EC-90, "TROUBLE DIAGNOSIS"

 (VQ35DE), 

EC-792, "TROUBLE DIAGNOSIS"

(VK45DE).

●

TCM: Refer to 

AT-44, "TROUBLE DIAGNOSIS"

 .

NO

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

BRC-54

[VDC/TCS/ABS]

WHEEL SENSOR

WHEEL SENSOR

PFP:47910

Removal and Installation

NFS000RA

COMPONENT

NOTE:
The above figure (front side) shows left side. Right side is the mirror image.

REMOVAL

Pay attention to the following when removing sensor.

CAUTION:

●

Do not twist sensor harness as much as possible, when removing it. Pull sensors out without pull-
ing on sensor harness.

●

Take care to avoid damaging sensor edges or rotor teeth. Remove wheel sensor first before
removing front or rear wheel hub. This is to avoid damage to sensor wiring and loss of sensor
function.

INSTALLATION

Pay attention to the following when installing wheel sensor. Tighten installation bolts to the specified torques.
Refer to 

BRC-54, "COMPONENT"

 .

1.

Front LH wheel sensor

2.

Front LH wheel sensor connector

3.

Clamp

4.

Bracket

5.

Rear RH wheel sensor connector

6.

Rear LH wheel sensor connector

7.

Rear LH wheel sensor

8.

Rear RH wheel sensor

A.

Front side

B.

Rear side

: Front

Refer to GI section 

GI-11, "Components"

  for symbol marks in the figure.

SFIA2723J

WHEEL SENSOR

BRC-55

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

●

When installing, make sure there is no foreign material such as iron chips on and in the mounting hole of
the wheel sensor. Make sure no foreign material has been caught in the sensor rotor. Remove any foreign
material and clean the mount.

●

When installing wheel sensor, be sure to press rubber grommets in until they lock at locations shown
above in the figure. When installed, harness must not be twisted.

BRC-56

[VDC/TCS/ABS]

SENSOR ROTOR

SENSOR ROTOR

PFP:47970

Removal and Installation

NFS000RB

REMOVAL

CAUTION:

Do not reuse sensor rotor.

Front

●

Sensor rotor cannot be disassembled. Remove the sensor rotor together with hub bearing assembly.
Refer to 

FAX-5, "REMOVAL"

 .

Rear

●

Follow the procedure below to remove rear sensor rotor.

–

Remove side flange. Refer to 

RFD-14, "SIDE OIL SEAL"

 .

–

Using a bearing replacer (suitable tool) and puller (suitable tool), remove sensor rotor from side flange.

INSTALLATION
Front

●

Sensor rotor cannot be disassembled. Remove the sensor rotor together with hub bearing assembly.
Refer to 

FAX-7, "INSTALLATION"

 . 

Rear

●

Follow the procedure below to install rear sensor rotor.

–

Using a drift (SST), press rear sensor rotor onto side flange.

–

Install side flange. Refer to 

RFD-14, "SIDE OIL SEAL"

 .

SFIA2040J