Nissan 350Z Workshop Maunual 2006 (9) PDF | Page 9

TROUBLE DIAGNOSIS
BRC-9
[ABS]
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BRC
Revision: 2005 August 2006 350Z
TROUBLE DIAGNOSIS PFP:00004
Fail-Safe Function NFS000II
ABS, EBD SYSTEM
In case of electrical problems with the ABS, the ABS warning lamp will turn on. In case of electrical problems
with the EBD, brake warning lamp, ABS warning lamp will turn on. Simultaneously, the ABS become one of
the following conditions of the Fail-Safe function.
? For ABS trouble, only the EBD is activated and the condition of the vehicle is the same condition of vehi-
cle without ABS equipment.
NOTE:
ABS self diagnosis sound may be heard. That is a normal condition because a self diagnosis for ?Ignition
switch ON? and ?The first starting? are being performed.
? For EBD trouble, The EBD and ABS become inoperative, are the condition of the vehicle is the same as
the condition of vehicles without ABS, EBD equipment.
How to Proceed with Diagnosis NFS0001Y
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 carry out ?erase memory?. Refer to
BRC-20, "
ERASE MEMORY" .
? 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" .
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