Infiniti FX35, FX50 (S51). Manual — part 431

CHG

DIAGNOSIS AND REPAIR WORKFLOW

CHG-5

< BASIC INSPECTION >

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8.

“S” TERMINAL CIRCUIT INSPECTION

Check “S” terminal circuit. Refer to

CHG-14, "Diagnosis Procedure"

.

Is the “S” terminal 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 ALTERNATOR PULLEY

Check alternator pulley. Refer to

CHG-32, "VQ35HR : Inspection"

(VQ35HR) or

CHG-34, "VK50VE : Inspec-

tion"

(VK50VE).

Is alternator pulley normal?

YES

>> Replace alternator.

NO

>> Repair as needed.

11.

“B” TERMINAL CIRCUIT INSPECTION

Check “B” terminal circuit. Refer to

CHG-10, "Diagnosis Procedure"

.

Is “B” terminal circuit normal?

YES

>> Replace alternator.

NO

>> Repair as needed.

12.

“B” TERMINAL CIRCUIT INSPECTION

Check “B” terminal circuit. Refer to

CHG-10, "Diagnosis Procedure"

.

Is “B” terminal circuit normal?

YES

>> GO TO 13.

NO

>> Repair as needed.

13.

INSPECTION OF ALTERNATOR PULLEY

Check alternator pulley. Refer to

CHG-32, "VQ35HR : Inspection"

(VQ35HR) or

CHG-34, "VK50VE : Inspec-

tion"

(VK50VE).

Is alternator pulley normal?

YES

>> Replace alternator.

NO

>> Repair as needed.

14.

“S” TERMINAL CIRCUIT INSPECTION

Check “S” terminal circuit. Refer to

CHG-14, "Diagnosis Procedure"

.

Is the “S” terminal circuit normal?

YES

>> Replace alternator.

NO

>> Repair as needed.

CHG-6

< SYSTEM DESCRIPTION >

CHARGING SYSTEM

SYSTEM DESCRIPTION

CHARGING SYSTEM

System Diagram

INFOID:0000000005242954

System Description

INFOID:0000000005242955

The alternator provides DC voltage to operate the vehicle's electrical system and to keep the battery charged.
The voltage output is controlled by the IC voltage regulator.

VQ35HR

VQ35HR : Component Parts Location

INFOID:0000000005242956

JPMIA0426GB

1.

Alternator

2.

Charge warning lamp

A.

Cylinder block (bank 1) side

B.

Combination meter

JSMIA0054ZZ

CHG

CHARGING SYSTEM

CHG-7

< SYSTEM DESCRIPTION >

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VK50VE

VK50VE : Component Parts Location

INFOID:0000000005242957

Component Description

INFOID:0000000005242958

1.

Alternator

2.

Charge warning lamp

A.

Cylinder block (bank 1) side

B.

Combination meter

JSMIA0070ZZ

Component part

Description

Alternator

The alternator provides DC voltage to operate the vehicle electri-
cal system and to keep the battery charged.

Combination meter (Charge warning lamp)

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

CHG-8

< SYSTEM DESCRIPTION >

POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM

POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM

System Diagram

INFOID:0000000005242959

System Description

INFOID:0000000005242960

By performing the power generation voltage variable control, the engine load due to the power generation of
the alternator is reduced and fuel consumption is decreased.
NOTE:
When any malfunction is detected in the power generation voltage variable control system, the power genera-
tion is performed according to the characteristic of the IC voltage regulator of the alternator.

VQ35HR

VQ35HR : Component Parts Location

INFOID:0000000005242961

VK50VE

JPMIA0632GB

1.

IPDM E/R

2.

Battery current sensor

3.

ECM

4.

Alternator

A.

Engine room dash panel (RH)

B.

Behind glove box

C.

Cylinder block (bank 1) side

JSMIA0069ZZ