Nissan Pathfinder (2007 year). Manual - part 368

 

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Nissan Pathfinder (2007 year). Manual - part 368

 

 

STARTING SYSTEM

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2007 Pathfinder

MINIMUM SPECIFICATION OF CRANKING VOLTAGE REFERENCING COOLANT TEMPERA-
TURE

Removal and Installation

EKS00FTN

REMOVAL

1.

Disconnect the negative battery terminal.

2.

Remove engine undercover, using power tools.

3.

Remove exhaust manifold cover from exhaust manifold (right bank) to gain access to starter cover bolts.
Refer to 

EX-4, "REMOVAL"

 .

4.

Remove starter cover bolts and starter cover.

Engine coolant temperature

Voltage V

30

°

C to 

20

°

C (

22

°

F to 

4

°

F)

8.4

19

°

C to 

10

°

C (

2

°

F to 14

°

F)

8.9

9

°

C to 0

°

C (16

°

F to 32

°

F)

9.3

More than 1

°

C (More than 34

°

F)

9.7

WKIA3190E

1.

Starter cover

2.

Starter motor assembly

3.

Starter cover plate (rear)

4.

Transmission housing

SC-18

STARTING SYSTEM

2007 Pathfinder

5.

Disconnect terminal "1" connector and terminal "2" nut.

6.

Remove the two starter bolts, using power tools.

7.

Remove the starter.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

Be sure to tighten terminal "2" nut carefully.

WKIA3189E

Terminal "2" nut

: 10.8 N·m (1.1 kg-m, 8 ft-lb)

CHARGING SYSTEM

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2007 Pathfinder

CHARGING SYSTEM

PFP:23100

System Description

EKS00FTO

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.
Power is supplied at all times to generator terminal 3 through

15A fuse (No. 30, located in the fuse and fusible link box).

Terminal 1 supplies power to charge the battery and operate the vehicle's electrical system. Output voltage is
controlled by the IC regulator at terminal 3 detecting the input voltage. A pulse width modulated (PWM) signal
is sent from terminal 37 of the IPDM E/R to terminal 4 of the generator. The ECM determines the duty cycle of
the power generation variable voltage control system. The charging circuit is protected by the 140A fusible link
[letter a , located in the fusible link box (battery)].
The generator is grounded through the engine.
With the ignition switch in the ON or START position, power is supplied

through 10A fuse [No. 14, located in the fuse block (J/B)]

to combination meter terminal 16 for the charge warning lamp.

Ground is supplied to terminal 2 of the combination meter through terminal 2 of the generator. With power and
ground supplied, the charge warning lamp will illuminate. When the generator is providing sufficient voltage
with the engine running, the ground is opened and the charge warning lamp will go off. If the charge warning
lamp illuminates with the engine running, a fault is indicated. The IC regulator warning function activates to
illuminate “CHARGE” warning lamp, if any of the following symptoms occur while generator is operating

Excessive voltage is produced.

No voltage is produced.

POWER GENERATION VARIABLE VOLTAGE CONTROL SYSTEM

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.

Operation

The battery current sensor detects the charging/discharging current of the battery. ECM judges the battery
condition based on this signal.

ECM judges whether to control voltage according to the battery condition.

ECM calculates the target power generation voltage according to the battery condition and sends the cal-
culated value, through CAN lines, as the power generation command value to IPDM E/R.

IPDM E/R converts the received power generation command value into the power generation command
signal (PWM signal) and sends it to the IC regulator.

The IC regulator performs final control over the power generation voltage.

PKIB4908E

SC-20

CHARGING SYSTEM

2007 Pathfinder

When there is no power generation command signal, the generator performs the normal power generation
according to the characteristic of the IC regulator.

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

BATTERY CURRENT SENSOR

Battery current sensor is installed to the negative battery cable
and it detects the charging/discharging current of the battery and
sends the voltage signal to ECM according to the current value.

PKIB4502E

CHARGING SYSTEM

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2007 Pathfinder

Wiring Diagram — CHARGE —

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WKWA5291E

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CHARGING SYSTEM

2007 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-26, "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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2007 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-25, "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

2007 Pathfinder

EXCESS RIPPLE DETECTED

Replace the generator. Refer to 

SC-31, "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-25, "WORK FLOW"

 .

Diagnostic item

Service procedure

 

 

 

 

 

 

 

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