NISSAN NAVARA 2005 Repair Workshop Manual

SC-18
CHARGING SYSTEM
3.CONTINUITY INSPECTION
1. Disconnect combination meter connector.
2. Check continuity between combination meter connector terminal 2 and alternator connector terminal 3.
OK or NG
OK >> Replace combination meter. (Do not replace alternator, since it is normal.)
NG >> Repair the harnesses or connectors. (Do not replace alternator, since it is normal.)
4.CHARGE WARNING LAMP INSPECTION
1. Turn ignition switch OFF.
2. Connect alternator connector.
3. Turn ignition switch ON.
Does charge warning lamp illuminate?
YES >> Repair alternator connector. (Poor connection and inter-
mittent problem) (Do not replace alternator, since it is
normal.)
NO >> Replace alternator. (circuit malfunction in alternator)
VOLTAGE DETECTION LINE AND CHARGE WARNING LAMP INSPECTION
INSPECTION PROCEDURE
1.CHARGE WARNING LAMP INSPECTION
1. Turn ignition switch OFF.
2. Remove alternator connector.
3. Turn ignition switch ON.
Does charge warning lamp stay ON?
YES >> GO TO 6.
NO >> GO TO 2.
2.VOLTAGE INSPECTION
Check voltage between alternator connector terminal 4 and ground.
Is the inspection result 12V or more?
YES >> Replace alternator.
NO >> GO TO 3.2 - 3 : Continuity should exist.
MKIB0555E
MKIB0555E
4 - Ground : 12V or more
MKIB1726E

CHARGING SYSTEM
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3.CONNECTOR INSPECTION
1. Turn ignition switch OFF.
2. Check alternator connector and terminal 4 (alternator side, and harness side) for damage, deformation or
improper connection.
OK or NG
OK >> GO TO 4.
NG >> Repair terminals and connectors.
4.CHECK FUSE
Check if any of the following fuses in the alternator are blown.
lCheck 15A fuse
OK or NG
OK >> GO TO 5.
NG >> If fuse is blownout, be sure to eliminate cause of malfunction befer installing new fuse.
5.CONTINUITY INSPECTION
1. Turn ignition switch OFF.
2. Disconnect combination meter connector.
3. Check continuity between combination meter connector terminal 2 and ground, and combination meter
connector terminal 2 and alternator terminal 3.
OK or NG
OK >> Replace combination meter. (Do not replace alternator, since it is normal.)
NG >> Repair the harnesses or connectors. (Do not replace alternator, since it is normal.)2 - Ground : Continuity should not exist.
2 - 3 : Continuity should exist.

SC-20
CHARGING SYSTEM
INSPECTION OF INSUFFICIENT ALTERNATOR POWER GENERATION
CAUTION:
Check them using charged battery performed battery inspection.
1.VOLTAGE INSPECTION
1. Increase engine speed to 2,500 rpm.
2. Turn electrical load to ON. (Headlamp LO turns on, blower fan
motor maximum airflow amount)
3. Check battery voltage.
Is the inspection result 12.8V to 15.1V?
YES >> GO TO 2.
NO >> Replace alternator. (Alternator power generation error.)
2.CURRENT INSPECTION
1. Turn ignition switch OFF.
2. Disconnect the battery ground cable.
3. Attach current measurement probe for CONSULT-II to the harness for alternator terminal B.
(If the probe can not be attached properly, then connect the sub-
harness between alternator terminal B and the vehicle side har-
ness as shown in figure, and attach the probe to sub-harness.)
4. Connect battery ground cable.
5. Increase engine speed to 2,500 rpm.
6. Turn electrical load to ON. (Headlamp LO turns on, blower fan
motor maximum airflow amount, rear window defogger)
7. Check alternator terminal B current.
CAUTION:
Be careful of rotating parts because the engine is running.
Is the inspection result 30A or more?
YES >> GO TO dark current inspection. Refer toSC-21, "DARK CURRENT INSPECTION". (Alternator is
normal. Do not replace.)
NO >> Replace alternator. (Alternator power generation error.)
INSPECTION OF EXCESSIVE ALTERNATOR POWER GENERATION
1.ALTERNATOR VOLTAGE INSPECTION
1. Increase engine speed to 2,500 rpm.
2. Check battery voltage.
Is the inspection result 16V or less?
YES >> GO TO 2.
NO >> Replace alternator. (Excessive alternator power genera-
tion.)
MKIA0067E
MKIA0068E
MKIA0067E

CHARGING SYSTEM
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2.BATTERY VOLTAGE INSPECTION
1. Turn ignition switch OFF.
2. Disconnect alternator connector.
3. Turn ignition switch ON.
4. Check voltage between alternator connector terminal 4 and
ground.
Is the inspection result 12V or more?
YES >> Replace alternator. (Alternator power generation error)
NO >> GO TO 3.
3.CHECK FUSE
Check if any of the following fuses in the alternator are blown.
lCheck 15A fuse
OK or NG
OK >> Repair the harnesses.
NG >> If fuse is blownout, be sure to eliminate cause of malfunction befer installing new fuse.
DARK CURRENT INSPECTION
Dark Current: Small current while ignition switch is “OFF”.
NOTE:
lIf battery ground cable is disconnected from battery terminal, a large dark current may not be reproduced.
When battery discharge occurs, never disconnect battery terminal while using ammeter.
lDo not connect CONSULT-II CONVERTER to data link connector when measuring dark current. CON-
SULT-II power should be supplied using AC adapter or internal battery.
1. Attach current measurement probe for CONSULT-II to battery
ground cable. Refer toSC-22, "
OPERATION PROCEDURE OF
CURRENT MEASUREMENT PROBE FOR CONSULT-II".
2. Check that all electrical equipment is turned OFF.
3. Remove key. Close and lock doors. Check that room lamp turns
off.
4. Measure dark current. Is it 50mA or less? Refer toSC-22,
"OPERATION PROCEDURE OF CURRENT MEASUREMENT
PROBE FOR CONSULT-II".
NOTE:
Dark current stable time is different due to equipment and use of
the vehicle. If it is not 50mA or less after leaving for 1 minute, measure dark current again after leaving for
30 minutes or more.
If YES, GO TO 7. If NO, GO TO 5.
5. Remove and install fuses one by one. Search for the fuse that greatly changes dark current.
NOTE:
If dark current is greatly reduced when removing the fuse, and even if dark current is not greatly increased
when installing it again, the fuse circuit may be the cause.
6. Check that dark current changes when moving the suspect circuit harness. If dark current changes, check
harness for short. If dark current does not change, electronic unit in the circuit may not be entering the
energy-saving mode when it turns OFF. If it does not enter the energy-saving mode, replace electronic
unit.
7. No malfunction for alternator and electrical equipment. Electric load may be larger than alternator generat-
ing ability. Check the customer's usage.4 - Ground : 12V or more
MKIB1726E
MKIA0070E

SC-22
CHARGING SYSTEM
OPERATION PROCEDURE OF CURRENT MEASUREMENT PROBE FOR CONSULT-II
For details, refer to the supplied “CONSULT-II Current Probe Operation Manual”.
1. Turn current probe power supply OFF and connect to CONSULT-II. (Red: CH1, Black: Ground)
2. Touch “SUB MODE”.
3. Touch “Extending Measurement Mode” on “SUB MODE” screen.
4. CAUTION is displayed, touch “OK”.
5. Set current probe range switch at the range to measure, turn
current probe power supply ON. When measuring dark current,
set 4A range. (Check that POWER indicator turns on. Refer to
CONSULT-II Current Probe Operation Manual.)
6. Touch the same measuring range at CONSULT-II.
NOTE:
If current probe measuring range is different from CONSULT-II
measuring range, incorrect value is displayed.
7. Adjust 0 point of current probe or CONSULT-II. (Do not clamp
anything to probe.)
NOTE:
If 0 point is dislocated greatly, adjust at current probe side gen-
erally.
8. Align current direction mark, clamp harness, and measure cur-
rent. If current direction is incorrect, it is displayed negative
value.
NOTE:
lWhen current is measured, close probe joint securely.
lIf multiple harnesses are clamped, measurement cannot be
performed. Always clamp only one.
MKIA0071E
MKIA0072E
MKIA0073E
MKIA0074E

CHARGING SYSTEM
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Removal and InstallationEKS00MZE
REMOVAL
1. Disconnect negative battery cable.
2. Remove intercooler hose and duct
3. Disconnect alternator harness.
4. Remove drive belt. Refer toEM-12, "
Checking Drive Belts".
5. Remove alternator upper mounting bolt.
6. Remove alternator lower mounting nut and bolt .
7. Remove alternator.
INSTALLATION
Install in the reverse order of removal, taking care of the following point.
lInstall alternator, and check tension of drive belt. Refer toEM-13, "Deflection Adjustment".
CAUTION:
Be sure to tighten alternator terminal 1 mounting nut carefully.
Disassembly and AssemblyEKS00PD1
LHD MODELS
MKIB1992E
YD engine models - B terminal nut:
: 7.9 - 11.0 N·m (0.8 - 1.11 kg-m, 70 - 97 in-lb)
1. Rear bearing 2. Rotor 3. Retainer
4. Front bearing 5. Through bolt 6. Front cover
7. Washer 8. Pulley 9. Stator
10. IC voltage regulator assembly 11. Diode assembly 12. Rear cover
13. B terminal
MKIB2000E

SC-24
CHARGING SYSTEM
RHD MODELS
DisassemblyEKS00MZG
REAR COVER
CAUTION:
Rear cover may be hard to remove because a ring is used to lock outer race of rear bearing. To facili-
tate removal of rear cover, heat just bearing box section with a 200W soldering iron.
Do not use a heat gun, as it can damage diode assembly.
REAR BEARING
CAUTION:
lDo not reuse rear bearing after removal. Replace with a new one.
lDo not lubricate rear bearing outer race.
1. Rear bearing 2. Rotor 3. Retainer
4. Front bearing 5. Through bolt 6. Front cover
7. Washer 8. Pulley 9. Stator
10. IC voltage regulator assembly 11. Diode assembly 12. Rear cover
13. B terminal
MKIB2001E
SEL032Z

CHARGING SYSTEM
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InspectionEKS00MZH
ROTOR CHECK
1. Resistance test
lNot within the specified values... Replace rotor.
2. Insulator test
lContinuity exists... Replace rotor.
3. Check slip ring for wear.
lNot within the specified values... Replace rotor.
BRUSH CHECK
1. Check smooth movement of brush.
lNot smooth... Check brush holder and clean.
2. Check brush for wear.
lReplace brush if it is worn down to the limit line.
PULLEY CHECK (WITH CLUTCH TYPE)
1. Check for locking (Outer ring is turned counterclockwise when
viewed from the rear).
lIf it rotates in both directions... Replace pulley.
2. Check for dragging (Outer ring is turned clockwise when viewed
from the rear).
lIf it locks or unusual resistance is felt... Replace pulley.
STATOR CHECK
1. Continuity test
lNo continuity... Replace stator.Resistance : Refer to SDS.SC-37,
"Alternator"
Slip ring minimum
outer diameter: Refer to SDS.SC-37,
"Alternator"SEL033Z
SEL631DA
PKIA0458E
SEL108E

SC-26
CHARGING SYSTEM
2. Ground test
lContinuity exists... Replace stator.
AssemblyEKS00MZI
RING FITTING IN REAR BEARING
lFix ring into groove in rear bearing so that it is as close to the
adjacent area as possible.
CAUTION:
Do not reuse rear bearing after removal.
REAR COVER INSTALLATION
1. Fit brush assembly, diode assembly, regulator assembly and
stator.
2. Push brushes up with fingers and install them to rotor.
Take care not to damage slip ring sliding surface.
SEL109E
SEL044Z
SEL048Z
SEL049Z

STARTING SYSTEM
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STARTING SYSTEMPFP:00011
System DescriptionEKS00MZJ
A/T MODELS
Power is supplied at all times:
lto starter motor terminal 1 and
lthrough 40A fusible link (letterJ, located in the fuse and fusible link box)
lto ignition switch terminal 1.
with the ignition switch in the START position, power is supplied:
lfrom ignition switch terminal 5
lto IPDM E/R terminal 21.
With the ignition switch in the ON or START position, power is supplied to IPDM E/R CPU, and
the selector lever in the P or N position, power is supplied:
lthrough A/T assembly terminal 9
lto IPDM E/R terminal 48.
Ground is supplied at all times:
lto IPDM E/R terminals 38 and 59
lfrom body grounds E21, E41 and E61.
Then the starter relay is turned ON.
The IPDM E/R starter relay is energized and power is supplied:
lfrom terminal 19 of IPDM E/R
lto terminal 2 of the starter motor.
The starter motor plunger closes and provides a closed circuit between the battery and the starter motor. The
starter motor is grounded to the cylinder block. With power and ground supplied, the starter motor operates.
M/T MODELS
Power is supplied at all times:
lto starter motor terminal 1 and
lthrough 40A fusible link (letterJ, located in the fuse and fusible link box)
lto ignition switch terminal 1.
with the ignition switch in the START position, power is supplied:
lfrom ignition switch terminal 5
lto IPDM E/R terminal 21.
With the start signal is input to IPDM E/R CPU, power is supplied:
lthrough IPDM E/R terminal 14
lto IPDM E/R terminal 48.
Ground is supplied at all times:
lto IPDM E/R terminals 38 and 59
lfrom body grounds E21, E41 and E61.
Then the starter relay is turned ON.
The IPDM E/R starter relay is energized and power is supplied:
lfrom terminal 19 of IPDM E/R
lto terminal 2 of the starter motor.
The starter motor plunger closes and provides a closed circuit between the battery and the starter motor. The
starter motor is grounded to the cylinder block. With power and ground supplied, the starter motor operates.