Index Manuals Nissan Pathfinder (2005 year) - Service and Repair Manual

Content .. 398 399 400 401 ..

Nissan Pathfinder (2005 year). Manual - part 400

CHARGING SYSTEM

SC-27

2005 Pathfinder

DIAGNOSTIC PROCEDURE 3
Check Terminal "3" Circuit

CHECK “3” TERMINAL CONNECTION

Turn the ignition switch OFF.

Check “3” terminal harness connector.

OK or NG

>> GO TO 2.

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

system test. Refer to

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

CHECK GENERATOR “3” TERMINAL CIRCUIT

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

OK or NG

>> GO TO

SC-24, "WORK FLOW"

>> Check harness for open between generator and fuse.

Battery voltage should exist.

WKIA3186E

SC-28

CHARGING SYSTEM

2005 Pathfinder

DIAGNOSTIC PROCEDURE 4
Check Terminal "1" Circuit

CHECK “1” TERMINAL CONNECTION

Turn the ignition switch OFF.

Check to see if “1” terminal is clean and tight.

OK or NG

>> GO TO 2.

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

system test. Refer to

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

CHECK GENERATOR “1” TERMINAL CIRCUIT

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

OK or NG

>> GO TO 3.

>> Check harness for open between generator and fusible

link.

CHECK “1” TERMINAL CONNECTION QUALITY (VOLTAGE DROP TEST)

Start engine.

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

SC-24, "WORK FLOW"

>> 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

CHARGING SYSTEM

SC-29

2005 Pathfinder

Power Generation Variable Voltage Control System Inspection

EKS00D86

CAUTION:

●

For this model, the battery current sensor that is installed to the negative battery cable measures
the charging/discharging current of the battery and performs various engine controls. If an electri-
cal component is connected directly to the negative battery terminal, the current flowing through
that component will not be measured by the battery current sensor. This condition may cause a
malfunction of the engine control system and battery discharge may occur. Do not connect an
electrical component or ground wire directly to the battery terminal.

●

When performing this inspection, always use the charged battery that completed the battery
inspection. When the charging rate of the battery is low, the response speed of the voltage change
will become slow. This is a cause of an incorrect inspection.

INSPECTION PROCEDURE

CHECK SELF-DIAGNOSIS OF ECM

CAUTION:

If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunction might be detected
in self-diagnosis depending on control unit which carry out CAN communication.

Perform ECM self-diagnosis with CONSULT-II.

Self-diagnostic results content

No malfunction detected>>GO TO 2.
Malfunction detected>>Check applicable parts, and repair or replace corresponding parts.

CHECK POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM OPERATION

Connect CONSULT-II and CONSULT-II CONVERTER and start the engine.

Put selector lever in “P” or “N” position and turn all electric loads including A/C OFF.

Select “ALT DUTY” at “ACTIVE TEST” of “ENGINE”, and then
check the value of “BATTERY VOLT” monitor when “ALTERNA-
TOR DUTY” is set to 40 %.

Check the value of “BATTERY VOLT” when “ALTERNATOR
DUTY” is set to 80%.

OK or NG

>> Inspection End.

>> GO TO 3. (The charging condition of the battery should

be normal.)

“BATTERY VOLT”

seconds after setting
“ALTERNATOR DUTY” to
40%

12.0 V - 13.6 V

PKIB4503E

“BATTERY VOLT”

20 seconds after setting
“ALTERNATOR DUTY” to
80%

0.5 V or more than the
value of “BATTERY
VOLT” when "ALTERNA-
TOR DUTY" was 40%

PKIB4504E

SC-30

CHARGING SYSTEM

2005 Pathfinder

CHECK SELF-DIAGNOSIS OF IPDM E/R

Perform IPDM E/R self-diagnosis with CONSULT-II.

Self-diagnostic results content

No malfunction detected>>GO TO 4.
Malfunction detected>>Check applicable parts, and repair or replace corresponding parts.

CHECK HARNESS BETWEEN IPDM AND GENERATOR

Disconnect generator connector E205 and IPDM E/R connector E122.

Check continuity between generator harness connector E205
terminal 4 and IPDM E/R harness connector E122 terminal 37.

Check continuity between generator harness connector E205
terminal 4 and ground.

OK or NG

>> Replace IPDM E/R. Refer to

PG-28, "Removal and

Installation of IPDM E/R"

>> Repair harness or connector between IPDM E/R and

generator.

Removal and Installation

EKS009J5

REMOVAL

Disconnect the negative battery terminal.

Remove the fan shroud. Refer to

CO-11, "Removal and Installation"

4 – 37

Continuity should exist.

4 – Ground

Continuity should not exist.

SKIB2697E

Generator

Engine block

Generator stay

WKIA3191E

CHARGING SYSTEM

SC-31

2005 Pathfinder

Remove the drive belt. Refer to

EM-13, "Removal and Installation"

Remove generator stay, using power tools.

Remove the generator upper bolt, using power tools.

Disconnect the generator harness connectors.

Remove the generator.

GENERATOR PULLEY INSPECTION

Perform the following.

●

Make sure that the generator pulley does not rattle.

●

Make sure that the generator pulley nut is properly tightened.

INSTALLATION

Installation is in the reverse order of removal.

●

Install the generator and check tension of drive belt. Refer to

EM-13, "Tension Adjustment"

CAUTION:

Be sure to tighten terminal "1" nut carefully.

●

For this model, the power generation voltage variable control system that controls the power generation
voltage of the generator has been adopted. Therefore, the power generation voltage variable control sys-
tem operation inspection should be performed after replacing the generator, and then make sure that the
system operates normally. Refer to

SC-29, "Power Generation Variable Voltage Control System Inspec-

tion"

Generator pulley nut

: 118 N·m (12.0 kg-m, 87 ft-lb)

Terminal "1" nut

: 10.8 N·m (1.1 kg-m, 8 ft-lb)