Content .. 1110 1111 1112 1113 ..
Infiniti M35/M45 Y50. Manual - part 1112
TROUBLE DIAGNOSIS
STC-5
[EPS]
C
D
E
F
H
I
J
K
L
M
A
B
STC
TROUBLE DIAGNOSIS
PFP:00004
How to Perform Trouble Diagnosis
NGS000DX
BASIC CONCEPT
●
The most important point to perform trouble 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,
they will be necessary to check symptom by driving vehicle with
customer.
CAUTION:
Customers are not professionals. Do not assume “maybe
customer 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.
●
Always read “GI General Information” to confirm general precau-
tions. Refer to
Component Parts Location
NGS000DY
SEF234G
SEF233G
1.
Power steering control unit
(Back of center console assembly)
2. Power steering solenoid valve
SGIA1105J