2011 INFINITI QX56 Factory Service Manual

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Page 649 of 5598

INFINITI QX56 2011 Factory Service Manual
BRC-132
< SYMPTOM DIAGNOSIS >[WITH VDC]
VEHICLE JERKS DURING
VEHICLE JERKS DURING
DescriptionINFOID:0000000006222667
The vehicle jerks when VDC function, TCS function, ABS
function, EBD function, hi

Page 650 of 5598

INFINITI QX56 2011 Factory Service Manual
NORMAL OPERATING CONDITIONBRC-133
< SYMPTOM DIAGNOSIS > [WITH VDC]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
NORMAL OPERATING CONDITION
DescriptionINFOID:0000000006222669
Symptom Result
Brake pedal slightly

NORMAL OPERATING CONDITIONBRC-133
< SYMPTOM DIAGNOSIS > [WITH VDC]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
NORMAL OPERATING CONDITION
DescriptionINFOID:0000000006222669
Symptom Result
Brake pedal slightly vibrates and operation sound (motor sound and sound from suspen-
sion) occurs when VDC function, TCS function, ABS function, EBD function, hill start assist
function and brake limited slip differential (BLSD) function operates. This is not a malfunction, The symptom
occurs VDC function
, TCS function, ABS
function, EBD function, hill start assist
function and brake limited slip differential
(BLSD) function that are normally operat-
ed.
Brake stopping distance may become longer than models without ABS function depending
on the road conditions, when
ABS function is operated on slip pery road like rough road,
gravel road or snowy road.
Brake pedal vibrates and operation sound occurs during sudden acceleration and corner-
ing, when VDC function, TCS function, hill start assist function and brake limited slip differ-
ential (BLSD) function is operated.
Brake pedal vibrates and motor sound from the engine room occurs, when the engine starts
or the vehicle starts just after starting the engine This is not a malfunction. The symptom
occurs during the brake fluid accumula-
tion in the accumulator and operational
check of the ABS actuator and electric
unit (control unit).
Acceleration may be felt insufficient depending on the road conditions. This is not a malfunction. The symptom occurs TCS function that puts the highest
priority to obtain the optimum traction
(stability).
TCS may operate momentarily, while driving on a road where friction coefficient varies, or
when downshifting or fully depressing accelerator pedal
ABS warning lamp and VDC warning lamp may turn ON, when the vehicle is on a rotating
turntable or is given a strong shaking or large vibrations on a ship while the engine is run-
ning.
In this case, restart the engine on a nor-
mal road. If the normal condition is re-
stored, there is no malfunction. In that
case, erase self-diagnosis result memory
for “ABS” with CONSULT-III.
VDC warning lamp may turn ON and VDC function, TCS function, hill start assist function
and brake limited slip differential (BLSD) function may not normally operate, when driving
on a special road the is extremely slanted (bank in a circuit course).
A malfunction in yaw rate/side/decel G sensor system may be detected when the vehicle
sharply turns during a spin turn, acceleration turn or drift driving while VDC function and
TCS function are OFF (VDC OFF switch is pressed and VDC OFF indicator lamp is in ON
status).
The vehicle speed does not increase, when the accelerator pedal is depressed while the
vehicle is on a 2-wheel chassis dynamometer for speedometer check.
This is not malfunction. (When checking
the vehicle on a chassis dynamometer,
operate VDC OFF switch so that TCS
function is OFF.)
The VDC warning lamp, ABS warn ing lamp and brake warning lamp turn ON and DTC
“C118E” may be detected in self-diagnosis resu lt of “ABS” when the brake pedal is exces-
sively operated, such as air bleeding. This is not a system malfunction because
this occurs due to the temporary de-
crease in accumulator fluid pressure. The
system returns to no
rmal condition when
the accumulator fluid pressure reaches
the specified pressure with the ignition
switch ON and the VDC warning lamp,
ABS warning lamp, a nd brake warning
lamp turn OFF. After these steps, ABS
self-diagnosis results are erased.
VDC OFF indicator lamp turns ON and TCS function is not operate when 4WD mode is “4L”.
(Models with 4WD system) This is not a malfunction. When the 4WD
mode becomes “4L” state, the TCS func-
tion is disabled. This function is enabled
when the 4WD mode becomes “AUTO”
or “4H”.
Revision: 2010 May2011 QX56

Page 651 of 5598

INFINITI QX56 2011 Factory Service Manual
BRC-134
< REMOVAL AND INSTALLATION >[WITH VDC]
WHEEL SENSOR
REMOVAL AND INSTALLATION
WHEEL SENSOR
FRONT WHEEL SENSOR
FRONT WHEEL SENSOR : Exploded ViewINFOID:0000000006222670
CAUTION:
Replace wheel h

Page 652 of 5598

INFINITI QX56 2011 Factory Service Manual
WHEEL SENSORBRC-135
< REMOVAL AND INSTALLATION > [WITH VDC]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
Never twist front wheel sensor harness when installi ng front wheel sensor. Check that grommet is fully

Page 653 of 5598

INFINITI QX56 2011 Factory Service Manual
BRC-136
< REMOVAL AND INSTALLATION >[WITH VDC]
SENSOR ROTOR
SENSOR ROTOR
FRONT SENSOR ROTOR
FRONT SENSOR ROTOR : Re
moval and InstallationINFOID:0000000006222674
CAUTION:
Replace wheel hub and bearin

Page 654 of 5598

INFINITI QX56 2011 Factory Service Manual
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)BRC-137
< REMOVAL AND INSTALLATION > [WITH VDC]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Removal and InstallationI

Page 655 of 5598

INFINITI QX56 2011 Factory Service Manual
BRC-138
< REMOVAL AND INSTALLATION >[WITH VDC]
YAW RATE/SIDE/DECEL G SENSOR
YAW RATE/SIDE/DECEL G SENSOR
Exploded ViewINFOID:0000000006222677
Removal and InstallationINFOID:0000000006222678
REMOVAL
C

Page 656 of 5598

INFINITI QX56 2011 Factory Service Manual
STEERING ANGLE SENSORBRC-139
< REMOVAL AND INSTALLATION > [WITH VDC]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
STEERING ANGLE SENSOR
Removal and InstallationINFOID:0000000006222679
REMOVAL
1. Remove spiral c

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