2005 NISSAN NAVARA Brc

CAN COMMUNICATION
BRC-7
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BRC
CAN COMMUNICATIONPFP:23710
System DescriptionEFS005TO
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 toLAN-30, "
CAN
Communication Unit".

BRC-8
[ABS]
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
PFP:00004
How to Perform Trouble Diagnosis for Quick and Accurate RepairEFS005TP
INTRODUCTION
lMost important point to perform diagnosis is to understand systems (control and mechanism) in vehicle
thoroughly.
lIt 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”.
lIt 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.
lAfter diagnosis, make sure to perform “erase memory”. Refer to
BRC-18, "
ERASE MEMORY".
lFor an intermittent malfunction, move harness or harness con-
nector by hand to check poor contact or false open circuit.
lAlways read “GI General Information” to confirm general precautions. Refer toGI-4, "General Precau-
tions".
EFJ0028D
SEF233G

TROUBLE DIAGNOSIS
BRC-9
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BRC
DIAGNOSIS FLOWCHART
SFIA0953E

BRC-10
[ABS]
TROUBLE DIAGNOSIS
ASKING COMPLAINTS
lComplaints against malfunction vary depending on each person.
It is important to clarify customer complaints.
lAsk customer about what symptoms are present and under
what conditions. Use information to reproduce symptom while
driving.
lIt is also important to use the diagnosis sheet so as not to miss
information.
EXAMPLE OF DIAGNOSIS SHEET
SBR339B
LFIA0176E

TROUBLE DIAGNOSIS
BRC-11
[ABS]
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BRC
Component Parts LocationEFS005TQ
SFIA3227E

BRC-12
[ABS]
TROUBLE DIAGNOSIS
Schematic — ABS —
EFS005TR
MFWA0130E

TROUBLE DIAGNOSIS
BRC-13
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BRC
Wiring Diagram — ABS —EFS005TS
MFWA0131E

BRC-14
[ABS]
TROUBLE DIAGNOSIS
MFWA0132E