Nissan Pathfinder. Manual — part 282

CHG-6

< SYSTEM DESCRIPTION >

COMPONENT PARTS

Component Description

INFOID:0000000009175259

Component part

Description

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.

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.

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.

Battery current sensor

The battery current sensor is located on the negative battery cable
terminal. The battery current sensor detects the charging/dis-
charging current of the battery and sends a voltage signal to the
ECM according to the current value detected.

CHG

CHARGING SYSTEM

CHG-7

< SYSTEM DESCRIPTION >

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CHARGING SYSTEM

System Diagram

INFOID:0000000009175260

System Description

INFOID:0000000009175261

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:0000000009175262

AWMIA1334GB

Component part

Description

Generator

Terminal “1”

Refer to

CHG-23, "Description"

.

Terminal “2”

Refer to

CHG-24, "Description"

.

Terminal “3”

Refer to

CHG-27, "Description"

.

Terminal “4”

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

CHG-8, "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-8, "System Description"

.

CHG-8

< SYSTEM DESCRIPTION >

POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM

POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM

System Diagram

INFOID:0000000009175263

System Description

INFOID:0000000009175264

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.

ALMIA0566GB

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CHARGING SYSTEM

CHG-9

< WIRING DIAGRAM >

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WIRING DIAGRAM

CHARGING SYSTEM

Wiring Diagram

INFOID:0000000009175265

ABMWA2107GB