Nissan Altima L32. Instruction — 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
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
.
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
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
Is terminal “1” circuit normal?
YES
>> GO TO 13
NO
>> Repair as needed.
13.
INSPECTION OF GENERATOR PULLEY
Check generator pulley. Refer to
.
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
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
.
Terminal “2”
Refer to
.
Terminal “3”
Refer to
.
Terminal “4”
Used for the power generation voltage variable control system.
Refer to
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
< 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
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
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