Nissan Pathfinder (2006 year). Manual - part 373

CHARGING SYSTEM

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2006 Pathfinder

Wiring Diagram — CHARGE —

EKS00FTP

WKWA4249E

SC-22

CHARGING SYSTEM

2006 Pathfinder

Trouble Diagnoses with Battery/Starting/Charging System Tester

EKS00FTQ

NOTE:
To ensure a complete and thorough diagnosis, the battery, starter and generator test segments must be done
as a set from start to finish.

Before starting, perform the preliminary inspection. Refer to 

SC-25, "PRELIMINARY INSPECTION"

 . 

1.

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

●

Using the CONSULT-II set the "ALT DUTY" to 0%. Keep "ALT DUTY" at 0% until the end of the inspec-
tion. When the "ALT DUTY" value is 0% or 100%, normal power generation is performed according to
the characteristic of the IC regulator in the generator.

●

Turn the ignition switch off, and disconnect the battery current sensor connector. Disconnecting the bat-
tery current sensor may cause DTC (P1550 - P1554) to set. After finishing the inspection, connect the
battery current sensor connector and erase the self-diagnostic results history of the engine using CON-
SULT-II.

2.

Turn off all loads on the vehicle electrical system.

3.

Perform battery and starting system test with Battery/Starting/
Charging system tester.

4.

Press “ENTER” to begin the charging system test.

5.

Start engine.

6.

Press “ENTER” until “LOADS OFF REV ENGINE 5 SEC” is dis-
played.

7.

Raise and hold the engine speed at 1,500 to 2,000 rpm for about
5 seconds, then return the engine to idle.
Once the increase in engine rpm is detected, press “ENTER” to
continue.

NOTE:

●

If after 30 seconds an increase in engine idle speed is not
detected, “RPM NOT DETECTED” will display.

●

Some engines may have a higher idle initially after starting,
particularly when the engine is cold. The tester may detect
this without any other action being taken. If this occurs, con-
tinue on with the testing process. The final results will not be affected.

8.

The tester now checks the engine at idle and performs the
DIODE/RIPPLE check.

9.

When complete, the tester will prompt you to turn on the follow-
ing electrical loads.

●

Heater fan set to highest speed. Do not run the A/C or wind-
shield defroster.

●

Head lamp high beam

●

Rear window defogger

NOTE:
Do not run the windshield wipers or any other cyclical loads.

SEL417X

SEL418X

SEL419X

CHARGING SYSTEM

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2006 Pathfinder

10. Press “ENTER” to continue.

11. Raise and hold the engine speed at 1,500 to 2,000 rpm for about

5 seconds, then return the engine to idle. Once the increase in
engine rpm is detected, press “ENTER” to continue.

NOTE:
If after 30 seconds an increase in engine idle speed is not
detected, “RPM NOT DETECTED” will be displayed. Press
“ENTER” to restart the test.

12. Diagnostic result is displayed on the tester. Refer to 

SC-23,

"DIAGNOSTIC RESULT ITEM CHART"

 .

13. Press “ENTER” then test output code is displayed. Record the

test output code on the repair order.

14. Toggle back to the “DIAGNOSTIC SCREEN” for test results.

DIAGNOSTIC RESULT ITEM CHART

SEL420X

SEL421X

SEL422X

SEL577X

Diagnostic item

Service procedure

CHARGING SYSTEM NORMAL

Charging system is normal and will also show DIODE RIPPLE test result.

NO CHARGING VOLTAGE

Go to 

SC-24, "WORK FLOW"

 .

LOW CHARGING VOLTAGE

HIGH CHARGING VOLTAGE

DIODE RIPPLE NORMAL

Diode ripple is OK and will also show CHARGING VOLTAGE test result.

SC-24

CHARGING SYSTEM

2006 Pathfinder

WORK FLOW

EXCESS RIPPLE DETECTED

Replace the generator. Refer to 

SC-30, "Removal and Installation"

 . Perform “DIODE RIP-

PLE” test again using Battery/Starting/Charging system tester to confirm repair.

DIODE RIPPLE NOT DETECTED

Go to 

SC-24, "WORK FLOW"

 .

Diagnostic item

Service procedure

WKIA3717E

CHARGING SYSTEM

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2006 Pathfinder

PRELIMINARY INSPECTION

1. 

CHECK BATTERY TERMINALS CONNECTION

Check if battery terminals are clean and tight.

OK or NG

OK

>> GO TO 2.

NG

>> Repair battery terminal connections.

2. 

CHECK FUSE AND FUSIBLE LINK

Check for blown fuses and fusible link. Refer to 

PG-84, "FUSE AND FUSIBLE LINK BOX"

 .

OK or NG

OK

>> GO TO 3.

NG

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

3. 

CHECK GENERATOR DRIVE BELT TENSION

Check generator drive belt tension. Refer to 

EM-14, "Checking Drive Belts"

 .

OK or NG

OK

>> Inspection End.

NG

>> Repair as needed.

DIAGNOSTIC PROCEDURE 1
Check Charge Warning Lamp Circuit (Open)

1. 

CHECK CHARGE WARNING LAMP CIRCUIT CONNECTION

1.

Turn the ignition switch OFF.

2.

Check terminal "2" harness connector.

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminal "2" connection. Confirm repair by performing complete Battery/Starting/Charging

system test. Refer to 

SC-22, "Trouble Diagnoses with Battery/Starting/Charging System Tester"

 .

*1

SC-25, "DIAGNOSTIC PROCE-
DURE 1"

*2

SC-28, "DIAGNOSTIC PROCE-
DURE 4"

*3

SC-26, "DIAGNOSTIC PROCE-
DURE 2"

*4

SC-28, "DIAGNOSTIC PROCE-
DURE 4"

*5

SC-31, "GENERATOR PULLEY 
INSPECTION"

Unit

Power source (Power supply terminals)

Fuse or fusible link

Generator

Battery (“1” terminal)

a

Battery (“3” terminal)

30

Combination meter

Ignition switch ON (“2” terminal)

14

SC-26

CHARGING SYSTEM

2006 Pathfinder

2. 

CHECK CHARGE WARNING LAMP CIRCUIT (OPEN)

1.

Disconnect E205 connector from generator.

2.

Apply ground to connector E205 terminal 2 with the ignition
switch in the ON position.

OK or NG

OK

>> GO TO 

SC-24, "WORK FLOW"

 .

NG

>> Check the following.

●

Charge warning lamp (Combination meter)

●

Harness for open or short between combination
meter and fuse

●

Harness for open between combination meter and
generator

DIAGNOSTIC PROCEDURE 2
Check Charge Warning Lamp Circuit (Short)

1. 

CHECK CHARGE WARNING LAMP CIRCUIT (SHORT)

1.

Turn the ignition switch OFF.

2.

Disconnect generator connector E205.

3.

Turn ignition switch ON.

Does charge warning lamp light up?

YES

>> Check the following.

●

Harness for short between combination meter and generator

●

Charge warning lamp (Combination meter)

NO

>> GO TO 

SC-24, "WORK FLOW"

 .

CHARGE lamp should light up.

WKIA3184E

CHARGING SYSTEM

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2006 Pathfinder

DIAGNOSTIC PROCEDURE 3
Check Voltage Regulator Circuit

1. 

CHECK VOLTAGE REGULATOR CIRCUIT CONNECTION

1.

Turn the ignition switch OFF.

2.

Check terminal "3" harness connector.

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminal "3" connection. Confirm repair by performing complete Battery/Starting/Charging

system test. Refer to 

SC-22, "Trouble Diagnoses with Battery/Starting/Charging System Tester"

 .

2. 

CHECK GENERATOR VOLTAGE REGULATOR CIRCUIT

Check voltage between generator connector E205 terminal 3 and
ground using a digital circuit tester.

OK or NG

OK

>> GO TO 

SC-24, "WORK FLOW"

 .

NG

>> Check harness for open between generator and fuse.

Battery voltage should exist.

WKIA3186E

SC-28

CHARGING SYSTEM

2006 Pathfinder

DIAGNOSTIC PROCEDURE 4
Check Battery Circuit

1. 

CHECK BATTERY CIRCUIT CONNECTION

1.

Turn the ignition switch OFF.

2.

Check to see if terminal "1" is clean and tight.

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminal "1" connection. Confirm repair by performing complete Battery/Starting/Charging

system test. Refer to 

SC-22, "Trouble Diagnoses with Battery/Starting/Charging System Tester"

 .

2. 

CHECK BATTERY CIRCUIT

Check voltage between generator connector E206 terminal 1 and
ground using a digital circuit tester.

OK or NG

OK

>> GO TO 3.

NG

>> Check harness for open between generator and fusible

link.

3. 

CHECK VOLTAGE DROP ON BATTERY CIRCUIT

1.

Start engine.

2.

While engine is running at idle and warm, check voltage
between generator connector E206 terminal 1 and battery posi-
tive terminal using a digital circuit tester.

OK or NG

OK

>>

SC-24, "WORK FLOW"

.

NG

>> Check harness between the battery and the generator

for poor continuity.

Battery voltage should exist.

WKIA2111E

With engine running 
at idle and warm.

: Less than 0.2V

WKIA3185E