Nissan 350Z Workshop Maunual 2004 (9) PDF | Page 9

TROUBLE DIAGNOSIS
BRC-9
[ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
Revision: 2004 December 2004.5 350Z
TROUBLE DIAGNOSIS PFP:00004
How to Proceed with Diagnosis AFS00290
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-21, "
Operation Procedure" .
? 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" .
EFJ0028D
SEF233G

Nissan 350Z Workshop Maunual 2004 (9) Summary of Content

TROUBLE DIAGNOSISBRC-9[ABS]CDEGHIJKLMABBRCRevision: 2004 December 2004.5 350ZTROUBLE DIAGNOSIS PFP:00004How to Proceed with Diagnosis AFS00290BASIC CONCEPT Most important point to perform diagnosis is to understand systems (control and mechanism) in vehiclethoroughly. 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 withcustomer.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 torepair a malfunction completely.For an intermittent malfunction, it is important to reproducesymptom based on interview with customer and past examples.Do not perform inspection on ad hoc basis. Most intermittentmalfunctions are caused by poor contacts. In this case, it will beeffective to shake suspected harness or connector by hand.When repairs are performed without any symptom check, noone can judge if malfunction has actually been eliminated. After diagnosis, make sure to carry out erase memory. Refer toBRC-21, "Operation Procedure" . 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" .EFJ0028DSEF233G