Nissan Pathfinder (2012 year). Instruction - part 122

CHG-4

< PREPARATION >

PREPARATION

PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000007355042

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Commercial Service Tool

INFOID:0000000007355043

Tool number
(Kent-Moore No.)
Tool name

Description

—

(—) Model GR8-1200 NI
Multitasking battery and electrical di-
agnostic station

Tests batteries, starting and charging sys-
tems and charges batteries.
For operating instructions, refer to diagnostic 
station instruction instruction.

—

(—) Model EXP-800 NI
Battery and electrical diagnostic ana-
lyzer

Tests batteries and charging systems.
For operating instructions, refer to diagnostic 
analyzer instruction instruction.

AWIIA1239ZZ

JSMIA0806ZZ

Tool name

Description

Power tool

Loosening nuts, screws and bolts

PIIB1407E

August 2012

2012 Pathfinder

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DIAGNOSIS AND REPAIR WORKFLOW

CHG-5

< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow (With EXP-800 NI or GR8-1200 NI)

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CHARGING SYSTEM DIAGNOSIS WITH EXP-800 NI OR GR8-1200 NI

To test the charging system, use the following special service tools:

• EXP-800 NI Battery and electrical diagnostic analyzer

• GR8-1200 NI Multitasking battery and electrical diagnostic station

NOTE:

Refer to the applicable Instruction Instruction for proper charging system diagnosis procedures.

August 2012

2012 Pathfinder

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< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORKFLOW

OVERALL SEQUENCE

DETAILED FLOW

NOTE:

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

as a set from start to finish. 

1.

PRELIMINARY INSPECTION

Perform the preliminary inspection. Refer to 

CHG-13, "Diagnosis Procedure"

.

AWMIA1283GB

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2012 Pathfinder

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DIAGNOSIS AND REPAIR WORKFLOW

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< BASIC INSPECTION >

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>> GO TO 2.

2.

STOP POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM

Stop the operation of the power generation voltage variable control in either of the following procedures.

• After selecting “ENGINE” using CONSULT, set the DUTY value of “ALTERNATOR DUTY” to 0 % by select-

ing “ALTERNATOR DUTY” of “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, and disconnect the battery current sensor connector. [However, DTC (P1550–

P1554) of the engine might remain. After finishing the inspection, connect the battery current sensor connec-

tor and erase the self diagnosis results history of the engine using CONSULT.] 

>> GO TO 3.

3.

DIAGNOSIS WITH EXP-800 NI OR GR8-1200 NI

Perform the charging system test using Multitasking battery and electrical diagnostic station GR8-1200 NI or

Battery and electrical diagnostic analyzer EXP-800 NI. Refer to the applicable Instruction Instruction for proper

testing procedures.
Test result

NO PROBLEMS>>Charging system is normal and will also show “DIODE RIPPLE” test result.

NO VOLTAGE>>GO TO 4.

LOW VOLTAGE>>GO TO 12.

HIGH VOLTAGE>>GO TO 14.

EXCESSIVE RIPPLE, OPEN PHASE, OPEN DIODE or SHORTED DIODE>>Replace the generator. Refer

to 

CHG-28, "Removal and Installation"

. Perform “DIODE RIPPLE” test again using Multitasking

battery and electrical diagnostic station GR8-1200 NI or Battery and electrical diagnostic analyzer

EXP-800 NI to confirm repair. 

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.

“L” TERMINAL CIRCUIT (OPEN) INSPECTION

Check “L” terminal circuit (open). Refer to 

CHG-17, "Diagnosis Procedure"

.

Is the “L” terminal circuit normal?

YES

>> Replace generator. Refer to 

CHG-28, "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.

“L” TERMINAL CIRCUIT (SHORT) INSPECTION

Check “L” terminal circuit (short). Refer to 

CHG-19, "Diagnosis Procedure"

.

Is the “L” terminal circuit normal?

YES

>> GO TO 8.

NO

>> Repair as needed.

8.

“S” TERMINAL CIRCUIT INSPECTION

Check “S” terminal circuit. Refer to 

CHG-20, "Diagnosis Procedure"

.

Is the “S” terminal circuit normal?

YES

>> GO TO 10.

August 2012

2012 Pathfinder

CHG-8

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORKFLOW

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-28, "Removal and Installation"

.

Is generator pulley normal?

YES

>> Replace generator. Refer to 

CHG-28, "Removal and Installation"

.

NO

>> Repair as needed.

11.

“B” TERMINAL CIRCUIT INSPECTION

Check “B” terminal circuit. Refer to 

CHG-16, "Diagnosis Procedure"

.

Is “B” terminal circuit normal?

YES

>> Replace generator. Refer to 

CHG-28, "Removal and Installation"

.

NO

>> Repair as needed.

12.

“B” TERMINAL CIRCUIT INSPECTION

Check “B” terminal circuit. Refer to 

CHG-16, "Diagnosis Procedure"

.

Is “B” terminal circuit normal?

YES

>> GO TO 13.

NO

>> Repair as needed.

13.

INSPECTION OF GENERATOR PULLEY

Check generator pulley. Refer to 

CHG-28, "Removal and Installation"

.

Is generator pulley normal?

YES

>> Replace generator. Refer to 

CHG-28, "Removal and Installation"

.

NO

>> Repair as needed.

14.

“S” TERMINAL CIRCUIT INSPECTION

Check “S” terminal circuit. Refer to 

CHG-20, "Diagnosis Procedure"

.

Is the “S” terminal circuit normal?

YES

>> Replace generator. Refer to 

CHG-28, "Removal and Installation"

.

NO

>> Repair as needed.

Work Flow (Without EXP-800 NI or GR8-1200 NI)

INFOID:0000000008802086

OVERALL SEQUENCE

Before performing a generator test, make sure that the battery is fully charged. A 30-volt voltmeter and suit-

able test probes are necessary for the test.

• Before starting, inspect the fusible link.

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DIAGNOSIS AND REPAIR WORKFLOW

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< BASIC INSPECTION >

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• Use fully charged battery.

DETAILED FLOW

1.

PRELIMINARY INSPECTION

Perform the preliminary inspection. Refer to 

CHG-13, "Diagnosis Procedure"

.

>> GO TO 2.

2.

STOP POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM

Stop the operation of the power generation voltage variable control in either of the following procedures:

• After selecting “ENGINE” using CONSULT, set the DUTY value of “ALTERNATOR DUTY” to 0 % by select-

ing “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, and disconnect the battery current sensor connector. [However, DTC (P1550 -

P1554) of the engine might remain. After finishing the inspection, connect the battery current sensor connec-

tor and erase the self-diagnostic results history of the engine using CONSULT.] 

>> GO TO 3.

3.

INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS TURNED ON)

When ignition switch is turned ON.
Does the charge warning lamp illuminate?

ALMIA0577GB

August 2012

2012 Pathfinder

CHG-10

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORKFLOW

YES

>> GO TO 4.

NO

>> GO TO 10.

4.

INSPECTION WITH CHARGE WARNING LAMP (IDLING) 

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

YES

>> GO TO 5.

NO

>> GO TO 6.

5.

INSPECTION WITH CHARGE WARNING LAMP (ENGINE AT 2,500 RPM)

Increase and maintain the engine speed at 2,500 rpm.
Does the charge warning lamp illuminate?

YES

>> GO TO 8.

NO

>> Inspection End.

6.

“L” TERMINAL CIRCUIT (SHORT) INSPECTION

Check terminal “L” circuit for (short). Refer to 

CHG-19, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair as needed.

7.

“S” TERMINAL CIRCUIT INSPECTION

Check terminal “S” circuit. Refer to 

CHG-20, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair as needed.

8.

MEASURE “B” TERMINAL VOLTAGE

Start engine. With engine running at 2,500 rpm, measure “B” terminal voltage. 
What voltage does the measurement result show?

Less than 13.0 V>>GO TO 9.

More than 16.0 V>>Replace generator. Refer to 

CHG-28, "Removal and Installation"

. 

9.

“B” TERMINAL CIRCUIT INSPECTION 

Check “B” terminal circuit. Refer to 

CHG-16, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Replace generator. Refer to 

CHG-28, "Removal and Installation"

.

NO

>> Repair as needed.

10.

INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS ON) 

1. Disconnect generator connector and apply ground to “L” terminal. 

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

YES

>> Replace generator. Refer to 

CHG-28, "Removal and Installation"

.

NO

>> GO TO 11.

11.

CHECK “L” TERMINAL CIRCUIT (OPEN)

Check “L” terminal circuit (OPEN). Refer to 

CHG-17, "Diagnosis Procedure"

.

>> Repair as needed.

August 2012

2012 Pathfinder

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CHARGING SYSTEM

CHG-11

< SYSTEM DESCRIPTION >

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SYSTEM DESCRIPTION

CHARGING SYSTEM

System Diagram

INFOID:0000000007355045

System Description

INFOID:0000000007355046

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:0000000007355047

ALMIA0207GB

Component part

Description

Generator

Terminal “1”

Refer to 

CHG-16, "Description"

.

Terminal “2”

Refer to 

CHG-17, "Description"

.

Terminal “3”

Refer to 

CHG-20, "Description"

.

Terminal “4”

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

CHG-12, "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-12, "System Description"

.

August 2012

2012 Pathfinder