Infiniti G35 (V35). Manual - part 775

STC-4

[EPS]

SYSTEM DESCRIPTION

SYSTEM DESCRIPTION

PFP:00000

Components

NGS000A5

EPS System Function

NGS000A6

●

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.

●

For schematic, wiring diagram and trouble diagnosis, refer to

STC-14, "Schematic"

 , 

STC-15, "Wiring Diagram—RAS—"

  ,

STC-41, "Diagnosis Chart by Symptom 2"

 , because EPS is

controlled by RAS control unit.

Fail-Safe Function

NGS000A7

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.

SGIA1446E

SST696CA

SGIA0411E

SYSTEM DESCRIPTION

STC-5

[EPS]

C

D

E

F

H

I

J

K

L

M

A

B

STC

FAIL-SAFE INPUT/CANCEL CONDITIONS

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
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.

Input conditions

Cancel conditions

When vehicle runs at an engine speed of 1,500 rpm or higher and no vehicle speed 
signal is received for 10 seconds.

●

A vehicle speed of 2 km/h (1.2 MPH) 
or more is input.

●

Turn the ignition switch ON after turn-
ing it OFF.

The continuous vehicle speed signal 30 km/h (19 MPH) or more suddenly drops to 
less than 2 km/h (1.2 MPH) within 1.4 seconds.

STC-6

[RAS]

PRECAUTIONS

[RAS]

PRECAUTIONS

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Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT 
BELT PRE-TENSIONER”

NGS000AY

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.

WARNING:

●

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

●

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

●

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.

Precautions for Battery Service

NGS000AZ

Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.

Service Notice or Precautions

NGS000B0

The following abbreviations are used.
RAS: Rear active steer

REAR ACTIVE STEER

STC-7

[RAS]

C

D

E

F

H

I

J

K

L

M

A

B

STC

REAR ACTIVE STEER

PFP:55705

Removal and Installation

NGS00094

COMPONENTS

REMOVAL

1.

Remove coil spring. Refer to 

RSU-15, "Removal and Installation"

 .

2.

Disconnect harness connector from RAS actuator assembly and rear suspension member.

3.

Remove fixing bolts and nuts of RAS actuator assembly (1), and
then remove RAS actuator assembly (1) from rear suspension
member.

INSTALLATION

●

Installation is the reverse order of removal. For tightening torque, refer to 

STC-7, "COMPONENTS"

 .

●

When installing RAS actuator assembly to rear suspension member, check the mounting surfaces of RAS
actuator assembly and rear suspension member for oil, dirt, sand, or other foreign materials.

●

To perform the neutral position adjustment. Refer to 

STC-8, "Neutral Position Adjustment"

 .

1.

Rear lower link

2.

Decenter cam

3.

RAS actuator assembly

Refer to 

GI-10, "Components"

 , for the symbol in the figure.

SGIA1238E

SGIA1239E