Nissan Altima L32. Instruction — part 179

CCS-4

< FUNCTION DIAGNOSIS >

[VQ35DE]

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

FUNCTION DIAGNOSIS

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

Description

INFOID:0000000004206764

For information regarding the ASCD system, refer to

EC-1090, "System Description"

.

CHG

CHG-1

ELECTRICAL & POWER CONTROL

C

D

E

F

G

H

I

J

K

L

B

SECTION

CHG

A

O

P

N

CONTENTS

CHARGING SYSTEM

BASIC INSPECTION . . . . . . . . .

2

DIAGNOSIS AND REPAIR WORKFLOW . . ..

2

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

2

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

5

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

5

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

5

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

5

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

5

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

6

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

6

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

6

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

6

COMPONENT DIAGNOSIS . . . . . . ..

7

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

7

Inspection Procedure . . . . . . . . . . . ....

7

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

8

Inspection Procedure . . . . . . . . . . . ....

8

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

10

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

10

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

10

L TERMINAL CIRCUIT . . . . . . . . . ...

11

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

11

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

11

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

12

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

12

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

12

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

13

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

13

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

18

SYMPTOM DIAGNOSIS . . . . . . . ..

23

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

23

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

23

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

24

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

24

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

24

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

24

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

24

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

26

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

26

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

26

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

26

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

27

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

27

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

27

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

29

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

30

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

30

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

30

CHG-2

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORKFLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000004205646

OVERALL SEQUENCE

DETAILED FLOW

ALMIA0055GB

CHG

DIAGNOSIS AND REPAIR WORKFLOW

CHG-3

< BASIC INSPECTION >

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

NOTE:

To ensure a complete and thorough diagnosis, the battery, starter and generator test segments must be done

as a set from start to finish.

1.

PRELIMINARY INSPECTION

Perform the preliminary inspection. Refer to

CHG-7, "Inspection Procedure"

.

>> GO TO 2

2.

DISABLE THE POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM

Disable the power generation voltage variable control with either of the following procedures.

• After selecting “ENGINE” on the “SELECT SYSTEM” screen of CONSULT-III, set the “ALTERNATOR DUTY”

value to 0 % by selecting “ALTERNATOR DUTY” with “Active Test”. Continue “Active Test” until the end of

inspection. (When the DUTY value is 0 or 100 %, the normal power generation is performed according to the

characteristic of the IC regulator of the generator.)

• Turn the ignition switch OFF, disconnect the battery current sensor connector and leave it disconnected dur-

ing the course of the test.

NOTE:

Running the engine with the battery current sensor disconnected will cause DTC's (P1550-P1554) to set.

After finishing the inspection, connect the battery current sensor connector and erase the self-diagnostic

results history of the engine using CONSULT-III.

>> GO TO 3

3.

DIAGNOSIS WITH STARTING/CHARGING SYSTEM TESTER

Perform the charging system test using Starting/Charging System Tester (J-44373). For details and operating

instructions, refer to Technical Service Bulletin.
Test result

CHARGING SYSTEM NOMAL>>Charging system is normal and will also show “DIODE RIPPLE” test result.

NO CHARGING VOLTAGE>>GO TO 4

LOW CHARGING VOLTAGE>>GO TO 12

HIGH CHARGING VOLTAGE>>GO TO 14

DIODE RIPPLE NORMAL>>Diode ripple is OK and will also show “CHARGING VOLTAGE” test result.

EXCESS RIPPLE DETECTED>>Replace the generator. Perform “DIODE RIPPLE” test again using Starting/

Charging System Tester (J-44373) to confirm repair.

DIODE RIPPLE NOT DETECTED>>GO TO 4

4.

INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS ON)

Turn the ignition switch ON.
Does the charge warning lamp illuminate?

YES

>> GO TO 6

NO

>> GO TO 5

5.

TERMINAL“2” (OPEN) CIRCUIT INSPECTION

Check terminal “2” circuit for open circuits. Refer to

CHG-11, "Diagnosis Procedure"

.

Is the terminal “2” circuit normal?

YES

>> Replace generator. Refer to

CHG-27, "Removal and Installation"

.

NO

>> Repair as needed.

6.

INSPECTION WITH CHARGE WARNING LAMP (IDLING)

Start the engine and run it at idle.
Does the charge warning lamp turn OFF?

YES

>> GO TO 9

NO

>> GO TO 7

7.

TERMINAL “2”(SHORT) CIRCUIT INSPECTION

Check terminal “2” circuit for short to ground. Refer to

CHG-11, "Diagnosis Procedure"

.

Is the terminal “2” circuit normal?