2008 INFINITI FX35 ABS

BRC-12
< SERVICE INFORMATION >[VDC/TCS/ABS]
SYSTEM DESCRIPTION
Hydraulic Circuit Diagram
INFOID:0000000001327663
CAN CommunicationINFOID:0000000001327664
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application.It is an on-vehicle multi-
plex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and eac h control unit shares information and kinks with other
control units during operation (not independent). In CA N communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but se lectively reads required data only. Refer to LAN-43, "
CAN Sys-
tem Specification Chart".
SFIA1163E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TROUBLE DIAGNOSISBRC-13
< SERVICE INFORMATION > [VDC/TCS/ABS]
C
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G H
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K L
M A
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BRC
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O P
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

BRC-14
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
DIAGNOSIS FLOWCHART
ASKING COMPLAINTS
SFIA3407E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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 complaints.
 Ask customer about what symptoms are present and under what
conditions. Use information to reproduce symptom while driving.
 It is also important to use diagnosis sheet so as not to miss infor- mation.
EXAMPLE OF DIAGNOSIS SHEET
SBR339B
SFIA3265E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BRC-16
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Component Part Location
INFOID:0000000001327667
SFIA2785E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TROUBLE DIAGNOSISBRC-17
< SERVICE INFORMATION > [VDC/TCS/ABS]
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M A
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SchematicINFOID:0000000001327668
TFWM0229E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BRC-18
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Wiring Diagram - VDC -
INFOID:0000000001327669
TFWM0230E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TROUBLE DIAGNOSISBRC-19
< SERVICE INFORMATION > [VDC/TCS/ABS]
C
D
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G H
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K L
M A
B
BRC
N
O P
TFWM0231E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C