Nissan Sentra. Manual - part 196

CCS

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

CCS-3

< SYSTEM DESCRIPTION >

[ASCD]

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SYSTEM DESCRIPTION

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

Information

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Automatic Speed Control Device (ASCD) system is controlled by ECM.

Regarding the information for ASCD system, refer to 

EC-51, "AUTOMATIC SPEED CONTROL DEVICE

(ASCD) : System Description"

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CHG-1

ELECTRICAL & POWER CONTROL

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SECTION 

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CONTENTS

CHARGING SYSTEM

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

3

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

3

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

3

Precaution for Power Generation Voltage Variable 
Control System ..........................................................

3

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

4

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

4

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

4

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

4

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

5

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

5

Component Parts Location ........................................

5

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

6

CHARGING SYSTEM ..........................................

7

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

7

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

7

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

7

POWER GENERATION VOLTAGE VARI-
ABLE CONTROL SYSTEM .................................

8

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

8

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

8

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

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CHARGING SYSTEM ..........................................

9

Wiring Diagram  .........................................................

9

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

14

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

14

Work Flow (With EXP-800 NI or GR8-1200 NI)  ......

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Work Flow (Without EXP-800 NI or GR8-1200 NI) ....

17

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

20

CHARGING SYSTEM PRELIMINARY IN-
SPECTION ........................................................

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

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POWER GENERATION VOLTAGE VARI-
ABLE CONTROL SYSTEM OPERATION IN-
SPECTION ........................................................

21

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

21

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

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

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

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L TERMINAL CIRCUIT (OPEN) ........................

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

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

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L TERMINAL CIRCUIT (SHORT)  .....................

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

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

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S TERMINAL CIRCUIT  .....................................

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

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

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

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CHARGING SYSTEM .......................................

28

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

28

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

29

GENERATOR ....................................................

29

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

29

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

29

Inspection ................................................................

30

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

31

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

31

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Generator ...............................................................

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PRECAUTIONS

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< PRECAUTION >

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PRECAUTION

PRECAUTIONS

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

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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.

Precaution for Power Generation Voltage Variable Control System

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CAUTION:

For model with power generation voltage variable control system, the battery current sensor that is

installed to the battery cable at the negative terminal measures the charging/discharging current of

the battery, and performs various controls. If the electrical component or the ground wire is connected

directly to the battery terminal, the current other than that being measured with the battery current

sensor is charging to or discharging from the battery. This condition causes the malfunction of the

control, and then the battery discharge may occur. Do not connect the electrical component or the

ground wire directly to the battery terminal.