INFINITI FX35 2005 Service Manual

BRC-10
[VDC/TCS/ABS]
SYSTEM DESCRIPTION
Revision: 2005 July 2005 FX
Hydraulic Circuit DiagramAFS001SH
SFIA1163E

CAN COMMUNICATION BRC-11
[VDC/TCS/ABS]
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Revision: 2005 July 2005 FX
CAN COMMUNICATIONPFP:23710
System DescriptionAFS0021Y
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN 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 selectively reads required data only. Refer to LAN-30, "
CAN
Communication Unit" .

BRC-12
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
TROUBLE DIAGNOSISPFP:00004
How to Proceed with DiagnosisAFS001SL
BASIC CONCEPT

Most important point to perform diagnosis is to understand systems (control and mechanism) in vehicle
thoroughly.

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
customer.
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
symptom 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 malfunction has actually been eliminated.

After diagnosis, make sure to perform “erase memory”. Refer to
BRC-27, "
SELF-DIAGNOSIS" .

For an intermittent malfunction, move harness or harness con-
nector by hand to check poor contact or false open circuit.

Always read “GI General Information” to confirm general precautions. Refer to GI-4, "General Precau-
tions" .
SEF234G
SEF233G

TROUBLE DIAGNOSIS BRC-13
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Revision: 2005 July 2005 FX
DIAGNOSIS FLOWCHART
SFIA1164E

BRC-14
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
ASKING COMPLAINTS

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
SFIA1425E

TROUBLE DIAGNOSIS BRC-15
[VDC/TCS/ABS]
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BRC
Revision: 2005 July 2005 FX
Component Installation LocationAFS001SM
SFIA2785E

BRC-16
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
SchematicAFS001SN
TFWH0009E

TROUBLE DIAGNOSIS BRC-17
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BRC
Revision: 2005 July 2005 FX
Wiring Diagram — VDC —AFS001SO
TFWM0068E

BRC-18
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
TFWM0069E

TROUBLE DIAGNOSIS BRC-19
[VDC/TCS/ABS]
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BRC
Revision: 2005 July 2005 FX
TFWM0058E