Nissan Versa Note. Manual - part 772

EPS CONTROL UNIT

STC-37

< REMOVAL AND INSTALLATION >

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REMOVAL AND INSTALLATION

EPS CONTROL UNIT

Exploded View

INFOID:0000000008969744

Removal and Installation

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CAUTION:

• Do not allow EPS control unit to get wet with water, moisture or any other liquid. Also, protect the

EPS control unit from extreme temperatures. 

• Do not disassemble or remodel EPS control unit, EPS motor, torque sensor, harness and connec-

tors.

REMOVAL

1. Disconnect the battery cable from the negative terminal. Refer to 

PG-67, "Removal and Installation (Bat-

tery)"

2. Remove instrument lower panel LH. Refer to 

IP-24, "Removal and Installation"

.

3. Disconnect harness connectors from EPS control unit.

CAUTION:

Hold and pull the connector housing, do not pull on harness when disconnecting connectors.

Also, do not grip, collapse or apply excessive force to the connector.

4. Remove screws and EPS control unit from steering column.
5. Remove bolts and bracket plate from steering column if necessary.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Check that the harness connector, terminals and the EPS control unit are not visibly damaged before

installing the EPS control unit. 

• Check that the harness connector, terminals and the EPS control unit are free of foreign materials

before installing.

• Replace the EPS control unit if it has been dropped or sustained an impact.

After installing steering column, perform self-diagnosis with CONSULT to ensure correct operation. Refer to

STC-6, "CONSULT Function"

.

1.

Steering column

2.

Bracket plate

3.

EPS control unit

Front

AWGIA0295ZZ

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ENGINE

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SECTION 

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CONTENTS

STARTING SYSTEM

PRECAUTION ...............................................

2

PRECAUTIONS ...................................................

2

Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................

2

PREPARATION ............................................

3

PREPARATION ...................................................

3

Special Service Tool  .................................................

3

Commercial Service Tools  ........................................

3

SYSTEM DESCRIPTION  ..............................

4

COMPONENT PARTS  ........................................

4

STARTING SYSTEM (WITHOUT INTELLIGENT 
KEY) .............................................................................

4

STARTING SYSTEM (WITHOUT INTELLIGENT 
KEY) : Component Parts Location  ............................

4

STARTING SYSTEM (WITHOUT INTELLIGENT 
KEY) : Component Description  ................................

5

STARTING SYSTEM (WITH INTELLIGENT KEY) ......

5

STARTING SYSTEM (WITH INTELLIGENT KEY) 
: Component Parts Location ......................................

6

STARTING SYSTEM (WITH INTELLIGENT KEY) 
: Component Description ..........................................

6

SYSTEM ..............................................................

8

STARTING SYSTEM (WITHOUT INTELLIGENT 
KEY) .............................................................................

8

STARTING SYSTEM (WITHOUT INTELLIGENT 
KEY) : System Diagram  ............................................

8

STARTING SYSTEM (WITHOUT INTELLIGENT 
KEY) : System Description ........................................

8

STARTING SYSTEM (WITH INTELLIGENT KEY) ......

8

STARTING SYSTEM (WITH INTELLIGENT KEY) 
: System Diagram ......................................................

9

STARTING SYSTEM (WITH INTELLIGENT KEY) 
: System Description .................................................

9

WIRING DIAGRAM ......................................

10

STARTING SYSTEM .........................................

10

Wiring Diagram - With Intelligent Key System .........

10

Wiring Diagram - Without Intelligent Key System ....

16

BASIC INSPECTION  ...................................

21

DIAGNOSIS AND REPAIR WORKFLOW  ........

21

Work Flow (With GR8-1200 NI) ...............................

21

Work Flow (Without GR8-1200 NI) ..........................

24

DTC/CIRCUIT DIAGNOSIS  .........................

27

B TERMINAL CIRCUIT  .....................................

27

Description ...............................................................

27

Diagnosis Procedure  ...............................................

27

S CONNECTOR CIRCUIT .................................

29

Description ...............................................................

29

Diagnosis Procedure  ...............................................

29

SYMPTOM DIAGNOSIS  ..............................

30

STARTING SYSTEM .........................................

30

Symptom Table  .......................................................

30

REMOVAL AND INSTALLATION ...............

31

STARTER MOTOR  ...........................................

31

Exploded View .........................................................

31

Removal and Installation  .........................................

31

SERVICE DATA AND SPECIFICATIONS 
(SDS) ............................................................

32

SERVICE DATA AND SPECIFICATIONS 
(SDS) .................................................................

32

Starter Motor ............................................................

32

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< PRECAUTION >

PRECAUTIONS

PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT 
PRE-TENSIONER"

INFOID:0000000009452283

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. Information necessary to service the system safely is included in the SR and SB section of

this Service Manual.

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 performed by

an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag

Module, see the SR 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 har-

ness connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-

tion ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a

hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing

serious injury.

• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the

battery and wait at least three minutes before performing any service.

PREPARATION

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< PREPARATION >

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PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000009385503

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Commercial Service Tools

INFOID:0000000009385504

Tool number
(Kent Moore No.)
Tool name

Description

 —
(—) Model GR8-1200 NI
Multitasking battery and electrical di-
agnostic station

Tests batteries, starting and charging systems 
and charges batteries.
Operating instructions, refer to diagnostic sta-
tion instruction manual.

AWIIA1239ZZ

Tool name

Description

Power tool

Loosening nuts, screws and bolts

PIIB1407E