2008 INFINITI FX35 Service Manual

height adjustment fuse diagram ECU jacking points AUX power steering

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INFINITI FX35 2008 Service Manual
BRC-10
< SERVICE INFORMATION >[VDC/TCS/ABS]
SYSTEM DESCRIPTION
SYSTEM DESCRIPTION
SchematicINFOID:0000000001327660
FunctionsINFOID:0000000001327661
VDC
In addition to the TCS/ABS function, the driv

BRC-10
< SERVICE INFORMATION >[VDC/TCS/ABS]
SYSTEM DESCRIPTION
SYSTEM DESCRIPTION
SchematicINFOID:0000000001327660
FunctionsINFOID:0000000001327661
VDC
In addition to the TCS/ABS function, the driver
steering amount and brake operation amount are detected
from steering angle sensor and pressure sensor, and the vehicle's driving status (amount of under steering /
over steering) is determined from information from G s ensor, wheel sensor, etc., and this information is used
to improve vehicle stability by controlling the braking and engine power to all four wheels.
SLIP indicator lamp flashes to inform the driver of VDC operation.
During VDC operation, body and brake pedal lightly vibrate and mechanical noises may be heard. This is
normal.
ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp might turn on when vehicle is subject
to strong shaking or large vibration, such as when vehi cle is on a turn table, a ship or a steep slope such as
bank while engine is running. In this case, restart engine on a normal road, and if ABS warning lamp, VDC
OFF indicator lamp, and SLIP indicator lamp turn off, there is no malfunction.
TCS
The wheel spin of the drive wheels is detected by ABS actuator and electric unit (control unit) from the wheel
speed signals from four wheels, so if wheel spin occurs , drive wheel right and left brake fluid pressure con-
trol and engine fuel cut are performed while throttle value is restricted to reduce the engi\
ne torque and
decrease the amount of wheel spin. In addition, the degree throttle is opened is controlled to achieve the
optimum engine torque.
Depending on road circumstances, the driver may have a sluggish feel. This is normal, because the opti-
mum traction has the highest priority under TCS operation.
TCS may be activated any time vehicle suddenly accelerates, suddenly down/upshifts, or is driven on a road with a varying surface friction coefficient.
During TCS operation, it informs a driver of sy stem operation by flashing SLIP indicator lamp.
ABS
The Anti-Lock Braking System is a function that detec ts wheel revolution while braking, and it improves han-
dling stability during sudden braking by electrically prev enting 4 wheel lock. Maneuverability is also improved
for avoiding obstacles.
If the electrical system malfunc tions, then the fail-safe function star ts, the ABS becomes inoperative, and
ABS warning lamp turns on.
Electrical system diagnosis by CONSULT-III is available.
During ABS operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.
When starting engine, or just after starting vehicle, brake pedal may vibrate or motor operating noises may be heard from engine compartment. This is a normal status of operation check.
SFIA1160E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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INFINITI FX35 2008 Service Manual
SYSTEM DESCRIPTIONBRC-11
< SERVICE INFORMATION > [VDC/TCS/ABS]
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Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gra

SYSTEM DESCRIPTIONBRC-11
< SERVICE INFORMATION > [VDC/TCS/ABS]
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Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel, or
snow-covered (fresh, deep snow) roads.
EBD
The Electronic Brake Distribution is a function that detects subtle slippages between front and rear wheels
during braking, and it improves handling stability by elec tronically controlling the brake fluid pressure which
results in reduced rear wheel slippage.
In case of electrical system malfunction, the fail- safe function is activated, EBD and ABS becomes inopera-
tive, and ABS warning lamp and brake warning lamp are turned on.
Electrical system diagnosis by CONSULT-III is available.
During EBD operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.
When starting engine, or just after starting vehicle, brake pedal may vibrate or motor operating noises may
be heard from engine compartment. This is a normal status of operation check.
Stopping distance may be longer than that of vehicles without EBD when vehicle drives on rough, gravel, or
snow-covered (fresh, deep snow) roads.
Fail-Safe FunctionINFOID:0000000001327662
VDC / TCS SYSTEM
In case of malfunction in the VDC/TCS system, VDC O FF indicator lamp and SLIP indicator lamp are turned
on, and the condition of vehicle is the same as the c ondition of vehicles without VDC/TCS system. In case of
malfunction in the VDC/TCS system, the ABS control c ontinues to operate normally without VDC/TCS control.
CAUTION:
If the fail-safe function is acti vated, then perform the self-diagnos is for VDC/TCS/ABS control system.
ABS, EBD SYSTEM
In case of electrical malfunctions with the ABS, ABS warning lamp, VDC OFF indicator lamp and SLIP indica-
tor lamp will turn on. In case of electrical malfunc tions with the EBD, brake warning lamp, ABS warning lamp,
VDC OFF indicator lamp and SLIP indicator lamp wil l turn on. Simultaneously, the VDC/TCS/ABS become one
of the following conditions of the fail-safe function.
For malfunction of ABS, only the EBD is activated and t he condition of vehicle is the same condition of vehi-
cles without TCS/ABS system.
NOTE:
ABS self-diagnosis sound may be heard. That is a no rmal condition because a self-diagnosis for “Ignition
switch ON” and “The first starting” are being performed.
For malfunction of EBD, EBD and ABS become inoperative, and the condition of vehicle is the same as the
condition of vehicles wit hout TCS/ABS, EBD system.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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Page 1027 of 3924

INFINITI FX35 2008 Service Manual
BRC-12
< SERVICE INFORMATION >[VDC/TCS/ABS]
SYSTEM DESCRIPTION
Hydraulic Circuit Diagram
INFOID:0000000001327663
CAN CommunicationINFOID:0000000001327664
SYSTEM DESCRIPTION
CAN (Controller Area Netwo

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INFINITI FX35 2008 Service Manual
TROUBLE DIAGNOSISBRC-13
< SERVICE INFORMATION > [VDC/TCS/ABS]
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TROUBLE DIAGNOSIS
Fail-Safe FunctionINFOID:0000000001327665
VDC/TCS SYSTEM
In case of malfunction in th

TROUBLE DIAGNOSISBRC-13
< SERVICE INFORMATION > [VDC/TCS/ABS]
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TROUBLE DIAGNOSIS
Fail-Safe FunctionINFOID:0000000001327665
VDC/TCS SYSTEM
In case of malfunction in the VDC/TCS system, VDC O FF indicator lamp and SLIP indicator lamp are turned
on, and the condition of vehicle is the same as the c ondition of vehicles without VDC/TCS system. In case of
malfunction in the VDC/TCS system, the ABS control c ontinues to operate normally without VDC/TCS control.
CAUTION:
If the fail-safe function is acti vated, then perform the self-diagnos is for VDC/TCS/ABS control system.
ABS, EBD SYSTEM
In case of electrical malfunctions with the ABS, ABS warning lamp, VDC OFF indicator lamp, SLIP indicator
lamp will turn on. In case of electrical malfuncti ons with the EBD, brake warning lamp, ABS warning lamp,
VDC OFF indicator lamp and SLIP indicator lamp wil l turn on. Simultaneously, the VDC/TCS/ABS become one
of the following conditions of the fail-safe function.
For malfunction of ABS, only the EBD is activated and t he condition of vehicle is the same condition of vehi-
cles without TCS/ABS system.
NOTE:
ABS self-diagnosis sound may be heard. That is a no rmal condition because a self-diagnosis for “Ignition
switch ON” and “The first starting” are being performed.
For malfunction of EBD, EBD and ABS become inoperative, and the condition of vehicle is the same as the
condition of vehicles wit hout TCS/ABS, EBD system.
How to Proceed with DiagnosisINFOID:0000000001327666
BASIC CONCEPT
Most important point to perform diagnosis is to unders tand systems (control and mechanism) in vehicle thor-
oughly.
It is also important to clarify customer complaints before inspec- tion.
First of all, reproduce symptom, and understand it fully.
Ask customer about his/her complaints carefully. In some cases, it
will be necessary to check symptom by driving vehicle with cus-
tomer.
NOTE:
Customers are not professionals. Do not assume “maybe cus-
tomer means...” or “maybe customer mentioned this symptom”.
It is essential to check symptoms right from beginning in order to repair a malfunction completely.
For an intermittent malfunction, it is important to reproduce symp-
tom based on interview with customer and past examples. Do not
perform inspection on ad hoc basis. Most intermittent malfunctions
are caused by poor contacts. In this case, it will be effective to
shake suspected harness or connector by hand. When repairs are
performed without any symptom check, no one can judge if mal-
function has actually been eliminated.
After diagnosis, make sure to perform “erase memory”. Refer to BRC-26, "
Self-Diagnosis".
For an intermittent malfunction, move harness or harness connec- tor by hand to check poor contact or false open circuit.
Always read “GI General Information” to confirm general precautions. Refer to GI-3, "
General Precaution".
SEF234G
SEF233G
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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INFINITI FX35 2008 Service Manual
BRC-14
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
DIAGNOSIS FLOWCHART
ASKING COMPLAINTS
SFIA3407E
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3A893A8

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INFINITI FX35 2008 Service Manual
TROUBLE DIAGNOSISBRC-15
< SERVICE INFORMATION > [VDC/TCS/ABS]
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Complaints against malfunction vary depending on each person. It is important to clarify customer com

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INFINITI FX35 2008 Service Manual
BRC-16
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Component Part Location
INFOID:0000000001327667
SFIA2785E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC

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INFINITI FX35 2008 Service Manual
TROUBLE DIAGNOSISBRC-17
< SERVICE INFORMATION > [VDC/TCS/ABS]
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SchematicINFOID:0000000001327668
TFWM0229E
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