Nissan Altima L32. Manual - part 1401

EPS CONTROL UNIT

STC-23

< REMOVAL AND INSTALLATION >

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REMOVAL AND INSTALLATION

EPS CONTROL UNIT

Removal and Installation

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REMOVAL

1. Remove audio/navi unit. Refer to 

AV-72, "Removal and Installation"

 or 

AV-437, "Removal and Installation"

(with navi).

2. Remove power steering control unit (1).
3. Disconnect power steering control unit connector.

INSTALLATION

Installation is in the reverse order of removal.

ALGIA0031ZZ

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ENGINE

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SECTION 

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CONTENTS

STARTING SYSTEM

QR25DE

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

3

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

3

Work Flow  .................................................................

3

FUNCTION DIAGNOSIS ...............................

6

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

6

System Diagram ........................................................

6

System Description  ...................................................

6

Component Description ............................................

7

COMPONENT DIAGNOSIS ..........................

8

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

8

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

8

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

8

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

9

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

9

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

9

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

10

Wiring Diagram - Coupe ..........................................

10

Wiring Diagram - Sedan ..........................................

16

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

22

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

22

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

22

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

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

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

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Necessary for Steering Wheel Rotation After Bat-
tery Disconnect  .......................................................

23

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

24

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

24

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

24

Commercial Service Tool  ........................................

24

ON-VEHICLE REPAIR .................................

25

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

25

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

25

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

25

Disassembly and Assembly .....................................

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

28

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

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Starter ......................................................................

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VQ35DE

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

29

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

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Work Flow ................................................................

29

FUNCTION DIAGNOSIS ..............................

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

32

System Diagram  ......................................................

32

System Description ..................................................

32

Component Description ..........................................

33

COMPONENT DIAGNOSIS .........................

34

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

34

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

34

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

34

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

35

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

35

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

35

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

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Wiring Diagram - Coupe  ..........................................

36

Wiring Diagram - Sedan  ..........................................

42

STR-2

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

48

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

48

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

48

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

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

49

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

49

Necessary for Steering Wheel Rotation After Bat-
tery Disconnect .......................................................

49

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

50

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

50

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

50

Commercial Service Tool ........................................

50

ON-VEHICLE REPAIR  ...............................

51

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

51

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

51

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

51

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

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

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Starter .....................................................................

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DIAGNOSIS AND REPAIR WORKFLOW

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< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

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OVERALL SEQUENCE

DETAILED FLOW

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