Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan 350Z 2003-2007 Approved Nissan 350Z 2006 STC
<< Back | HomeMost service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.
Image preview - the first page of the document
>> Download STC documenatation <<
Text preview - extract from the document
STEERING CONTROL SYSTEM
G STEERING
A
SECTION
STEERING CONTROL SYSTEM
STC B
C
D
E
CONTENTS
EPS Control Unit Input/Output Signal Standard .............. 6 . F
STANDARD BY CIRCUIT TESTER AND OSCIL-
SYSTEM DESCRIPTION ........................................... 2 . LOSCOPE ............................................................ 6
.
Components ............................................................ 2
. For Fast and Accurate Trouble Diagnosis ............... 7 . STC
Electronically Controlled Power Steering System Basic Inspection ...................................................... 7
.
Function .................................................................. 2
. POWER SUPPLY CIRCUIT TERMINAL LOOSE-
Fail-Safe Function ................................................... 2
. NESS AND BATTERY .......................................... 7 .
FAIL-SAFE INPUT/CANCEL CONDITIONS ........ 2 . H
Inspection: Power Steering Control Unit Power Sup-
TROUBLE DIAGNOSIS ............................................. 4 . ply Circuit and Ground ............................................. 7
.
How to Perform Trouble Diagnosis ......................... 4 . Symptom: The Steering Force Does Not Change
BASIC CONCEPT ................................................ 4 . Smoothly According to the Vehicle Speed ............... 8 . I
Component Parts Location ...................................... 4 .
Wiring Diagram -- EPS -- ...................................... 5 .
J
K
L
M
Revision: 2005 August STC-1 2006 350Z
SYSTEM DESCRIPTION
[EPS]
SYSTEM DESCRIPTION
[EPS] PFP:00000
Components NGS00075
SGIA1056E
Electronically Controlled Power Steering System Function NGS00077
Vehicle speed sensing electronically controlled power steering (that
properly controls the steering force by the vehicle speed) has been
adopted. When it is normal, it controls the power steering solenoid
valve according to the vehicle speed as shown in the figure and
makes the steering force proper.
SST696CA
Fail-Safe Function NGS00078
When the fail-safe function operate, it controls power steering sole-
noid valve by the engine speed as shown in the figure and maintains
the steering force.
SGIA0411E
FAIL-SAFE INPUT/CANCEL CONDITIONS
Input conditions Cancel conditions
When vehicle runs at an engine speed of 1,500 rpm or higher and no vehicle speed q A vehicle speed of 2 km/h (1.2 MPH)
signal is received for 10 seconds. or more is input.
The continuous vehicle speed signal 30 km/h (19 MPH) or more suddenly drops to q Turn the ignition switch ON after turn-
less than 2 km/h (1.2 MPH) within 1.4 seconds. ing it OFF.
Revision: 2005 August STC-2 2006 350Z
SYSTEM DESCRIPTION
[EPS]
CAUTION:
Fail-safe function is activated when the engine runs at 1,500 rpm or higher for 10 seconds with the vehicle stopped. This is A
normal and the fail-safe function is automatically deactivated when a vehicle speed signal of 2 km/h (1.2 MPH) or higher is
input or the ignition switch is turned OFF.
B
C
D
E
F
STC
H
I
J
K
L
M
Revision: 2005 August STC-3 2006 350Z
TROUBLE DIAGNOSIS
[EPS]
TROUBLE DIAGNOSIS PFP:00004
How to Perform Trouble Diagnosis NGS00079
BASIC CONCEPT
q The most important point to perform trouble diagnosis is to understand systems (control and mechanism)
in vehicle thoroughly.
q 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".
SEF234G
q 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.
q Always read "GI General Information" to confirm general precau-
tions. Refer to GI-4, "General Precautions" . SEF233G
Component Parts Location NGS0007A
SGIA1460E
1. Power steering control unit 2. Power steering solenoid valve
(Back of dash side finisher RH)
Revision: 2005 August STC-4 2006 350Z
TROUBLE DIAGNOSIS
[EPS]
Wiring Diagram -- EPS -- NGS0007B
A
B
C
D
E
F
STC
H
I
J
K
L
M
TGWT0049E
Revision: 2005 August STC-5 2006 350Z
TROUBLE DIAGNOSIS
[EPS]
Control Unit Input/Output Signal Standard NGS0007C
STANDARD BY CIRCUIT TESTER AND OSCILLOSCOPE
CAUTION:
When checked using a circuit tester for voltage measurement, connector terminals should not be
forcefully extended.
Terminal Measuring
Measuring condition Standard
+ (wire color) ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo