Nissan Altima L32. Manual - part 180

CHG-4

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORKFLOW

YES

>> GO TO 8

NO

>> Repair as needed.

8.

TERMINAL“3” CIRCUIT INSPECTION

Check terminal “3” circuit. Refer to 

CHG-12, "Diagnosis Procedure"

.

Is the terminal “3” circuit normal?

YES

>> GO TO 10

NO

>> Repair as needed.

9.

INSPECTION WITH CHARGE WARNING LAMP (ENGINE AT 3,000 RPM)

Increase and maintain the engine speed at 3,000 rpm.
Does the charge warning lamp remain off?

YES

>> GO TO 11

NO

>> GO TO 10

10.

INSPECTION OF GENERATOR PULLEY

Check generator pulley. Refer to 

CHG-29, "Inspection"

.

Is generator pulley normal?

YES

>> Replace generator. Refer to 

CHG-27, "Removal and Installation"

.

NO

>> Repair as needed.

11.

TERMINAL “1” CIRCUIT INSPECTION

Check terminal “1””circuit. Refer to 

CHG-10, "Diagnosis Procedure"

.

Is terminal “1” circuit normal?

YES

>> Replace generator. Refer to 

CHG-27, "Removal and Installation"

.

NO

>> Repair as needed.

12.

TERMINAL “1” CIRCUIT INSPECTION

Check terminal “1” circuit. Refer to 

CHG-10, "Diagnosis Procedure"

.

Is terminal “1” circuit normal?

YES

>> GO TO 13

NO

>> Repair as needed.

13.

INSPECTION OF GENERATOR PULLEY

Check generator pulley. Refer to 

CHG-29, "Inspection"

.

Is generator pulley normal?

YES

>> Replace generator. Refer to 

CHG-27, "Removal and Installation"

.

NO

>> Repair as needed.

14.

TERMINAL “3” CIRCUIT INSPECTION

Check terminal “3” circuit. Refer to 

CHG-12, "Diagnosis Procedure"

.

Is the terminal “3” circuit normal?

YES

>> Replace generator. Refer to 

CHG-27, "Removal and Installation"

.

NO

>> Repair as needed.

CHG

CHARGING SYSTEM

CHG-5

< FUNCTION DIAGNOSIS >

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FUNCTION DIAGNOSIS

CHARGING SYSTEM

System Diagram

INFOID:0000000004205647

System Description

INFOID:0000000004205648

The generator provides DC voltage to operate the vehicle's electrical system and to keep the battery charged.

The voltage output is controlled by the IC regulator.

Component Description

INFOID:0000000004205649

ALMIA0207GB

Component part

Description

Generator

Terminal “1”

Refer to 

CHG-10, "Description"

.

Terminal “2”

Refer to 

CHG-11, "Description"

.

Terminal “3”

Refer to 

CHG-12, "Description"

.

Terminal “4”

Used for the power generation voltage variable control system. 
Refer to 

CHG-6, "System Description"

.

Combination meter (Charge warning lamp)

The IC regulator warning function activates to illuminate the 
charge warning lamp if any of the following symptoms occur while 
generator is operating:
• Excessive voltage is produced.
• No voltage is produced.

IPDM E/R

Used for the power generation voltage variable control system. 
Refer to 

CHG-6, "System Description"

.

CHG-6

< FUNCTION DIAGNOSIS >

POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM

POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM

System Diagram

INFOID:0000000004205650

System Description

INFOID:0000000004205651

Power generation variable voltage control system has been adopted.  By varying the voltage to the generator,

engine load due to power generation of the generator is reduced and fuel consumption is decreased. 

NOTE:

When any malfunction is detected in the power generation variable voltage control system, power generation

is performed according to the characteristic of the IC regulator in the generator. 

Component Description

INFOID:0000000004205652

ALMIA0057GB

Component part

Description

Battery current sensor

The battery current sensor is installed on the battery cable at the 
negative terminal. The battery current sensor detects the charg-
ing/discharging current of the battery and sends a voltage signal 
to the ECM according to the current value detected.

ECM

The battery current sensor detects the charging/discharging cur-
rent of the battery. The ECM judges the battery condition based on 
this signal.
The ECM judges whether to request more output via the power 
generation voltage variable control according to the battery condi-
tion.
When performing the power generation voltage variable control, 
the ECM calculates the target power generation voltage according 
to the battery condition and sends the calculated value as the pow-
er generation command value to the IPDM E/R.

IPDM E/R

The IPDM E/R converts the received power generation command 
value into a pulse width modulated (PWM) command signal and 
sends it to the IC regulator.

Generator (IC regulator)

The IC regulator controls the power generation voltage by the tar-
get power generation voltage based on the received PWM com-
mand signal.
When there is no PWM command signal, the generator performs 
the normal power generation according to the characteristic of the 
IC regulator.

CHG

CHARGING SYSTEM PRELIMINARY INSPECTION

CHG-7

< COMPONENT DIAGNOSIS >

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COMPONENT DIAGNOSIS

CHARGING SYSTEM PRELIMINARY INSPECTION

Inspection Procedure

INFOID:0000000004205653

1.

CHECK BATTERY TERMINALS CONNECTION

Check if battery terminals are clean and tight.
Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair battery terminals connection.

2.

CHECK FUSE

Check for blown fuse and fusible link.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Be sure to eliminate cause of malfunction before installing new fuse or fusible link.

3.

CHECK GENERATOR GROUND TERMINAL CONNECTION

Check if connector E230 terminal 5 (generator ground harness) is clean and tight.
Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair connection.

4.

CHECK DRIVE BELT TENSION

Check drive belt tension. Refer to 

CHG-29, "Inspection"

.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair as needed.

Unit

Power source (Power supply terminals)

Fuse or Fusible Link

Generator

Battery (terminal 3)

Fuse 29

Battery (terminal 1)

Fusible Link A

Combination meter

Ignition switch ON (terminal 2)

Fuse 4