2003 NISSAN TEANA charging system

CHASSIS AND BODY MAINTENANCE
MA-37
C
D
E
F
G
H
I
J
K
MA
B
MA

1. Check for fluid leakage.
2. With the engine warmed up, drive the vehicle in an urban area.
When ambient temperature is 20°C (68°F), it takes about 10
minutes for the CVT fluid to warm up to 50 to 80°C (122 to
176°F).
3. Park the vehicle on a level surface.
4. Apply parking brake firmly.
5. With engine at idle, while depressing brake pedal, move shift
selector throughout the entire shift range.
6. Pull out the CVT fluid level gauge from the CVT fluid charging
pipe after pressing the tab on the CVT fluid level gauge to
release the lock.
7. Wipe fluid off the CVT fluid level gauge. Insert the CVT fluid
level gauge rotating 180° from the originally installed position,
then securely push the CVT fluid level gauge until it meets the
top end of the CVT fluid charging pipe.
CAUTION:
When wiping away the CVT fluid level gauge, always use
lint-free paper, not a cloth rag.
8. Place the selector lever in “P” or “N” and make sure the fluid
level is within the specified range.
CAUTION:
When reinstalling CVT fluid level gauge, insert it into the
CVT fluid charging pipe and rotate it to the original installa-
tion position until it is securely locked.
9. Check CVT fluid condition.

If CVT fluid is very dark or smells burned, check operation of
CVT. Flush cooling system after repair of CVT.

If CVT fluid contains frictional material (clutches, bands, etc.),
replace radiator and flush cooler line using cleaning solvent
and compressed air after repair of CVT. Refer to CO-37,
"RADIATOR" .
SMA146B
SCIA1933E
SCIA1931E
SCIA1932E
ATA0022D

HARNESS
PG-63
C
D
E
F
G
H
I
J
L
MA
B
PG

Wiring Diagram Codes (Cell Codes) BKS002FS
Use the chart below to find out what each wiring diagram code stands for.
Refer to the wiring diagram code in the alphabetical index to find the location (page number) of each wiring
diagram.
Code Section Wiring Diagram Name
A/C ATC Air Conditioner
ABS BRC Anti-Lock Brake System
AFS LT Adaptive Front Lighting System
APPS1 EC Accelerator Pedal Position Sensor
APPS2 EC Accelerator Pedal Position Sensor
APPS3 EC Accelerator Pedal Position Sensor
ASC/BS EC Automatic Speed Control Device (ASCD) Brake Switch
ASC/SW EC Automatic Speed Control Device (ASCD) Steering Switch
ASCBOF EC Automatic Speed Control Device (ASCD) Brake Switch
ASCIND EC Automatic Speed Control Device (ASCD) Indicator
AT/IND DI A/T Indicator Lamp
AUDIO AV Audio
AUT/DP SE Automatic Drive Positioner
AUTO/L LT Auto Light Control
BA/FTS AT A/T Fluid Temperature Sensor and TCM Power Supply
BACK/L LT Back-Up Lamp
BRK/SW EC Brake Switch
CAN AT CAN Communication Line
CAN CVT CAN Communication Line
CAN EC CAN Communication Line
CAN LAN CAN System
CHARGE SC Charging System
CHIME DI Warning Chime
CIGAR WW Cigarette Lighter
COMBSW LT Combination Switch
COMM AV Audio Visual Communication Line
COOL/F EC Cooling Fan Control
CVTIND DI CVT Indicator Lamp
D/LOCK BL Power Door Lock
DEF GW Rear Window Defogger
ECM/PW EC ECM Power Supply for Back-Up
ECTS EC Engine Coolant Temperature Sensor
EMNT EC Electronic Controlled Engine Mount
ENGSS AT Engine Speed Signal
ETC1 EC Electric Throttle Control Function
ETC2 EC Electric Throttle Control Motor Relay
ETC3 EC Electric Throttle Control Motor
F/FOG LT Front Fog Lamp
F/LID BL Fuel Lid Opener
F/PUMP EC Fuel Pump
FRO2 EC Heated Oxygen Sensor 1 Heater

SC-1
STARTING & CHARGING SYSTEM
K ELECTRICAL
CONTENTS
C
D
E
F
G
H
I
J
L
M
SECTION SC
A
B
SC

STARTING & CHARGING SYSTEM
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
PREPARATION ........................................................... 3
Commercial Service Tools ........................................ 3
BATTERY .................................................................... 4
How to Handle Battery ............................................. 4
METHODS OF PREVENTING OVER-DIS-
CHARGE ............................................................... 4
CHECKING ELECTROLYTE LEVEL .................... 5
SPECIFIC GRAVITY CHECK ............................... 5
Battery Test and Charging Chart .............................. 7
CHART I ................................................................ 7
CHART II ............................................................... 8
A: SLOW CHARGE ............................................... 9
B: STANDARD CHARGE .................................... 10
C: QUICK CHARGE ............................................ 12
Removal and Installation ........................................ 13
REMOVAL ........................................................... 13
INSTALLATION ................................................... 13
STARTING SYSTEM ................................................ 14
System Description ................................................ 14
Wiring Diagram — START — ................................. 15
A/T MODELS ...................................................... 15
CVT MODELS ..................................................... 16
Trouble Diagnosis .................................................. 17
Removal and Installation ........................................ 18VQ23DE AND VQ35DE MODELS ...................... 18
REMOVAL ........................................................... 18
INSTALLATION ................................................... 18
QR20DE MODELS .............................................. 19
REMOVAL ........................................................... 19
INSTALLATION ................................................... 19
Disassembly and Assembly .................................... 20
DISASSEMBLY ................................................... 20
INSPECTION ...................................................... 23
ASSEMBLY ......................................................... 26
CHARGING SYSTEM ............................................... 27
System Description ................................................. 27
MALFUNCTION INDICATOR .............................. 27
Wiring Diagram — CHARGE — ............................. 28
Trouble Diagnosis ................................................... 29
WITH IC REGULATOR ........................................ 29
Removal and Installation ........................................ 30
VQ23DE AND VQ35DE MODELS ...................... 30
QR20DE MODELS .............................................. 32
Disassembly and Assembly .................................... 33
DISASSEMBLY ................................................... 34
INSPECTION ...................................................... 35
ASSEMBLY ......................................................... 36
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 38
Battery .................................................................... 38
Starter ..................................................................... 38
Alternator ................................................................ 38

CHARGING SYSTEM
SC-27
C
D
E
F
G
H
I
J
L
MA
B
SC

CHARGING SYSTEMPFP:23100
System DescriptionBKS001MJ
The alternator 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:

through 10A fuse (No. 36, located in the fuse and fusible link block)

to alternator terminal 4 (“S” terminal).
“B” terminal supplies power to charge the battery and operate the vehicle's electrical system. Output voltage is
controlled by the IC regulator at terminal 4 (“S” terminal) detecting the input voltage.
The charging circuit is protected by the 120A fusible link (letter A, located in the fusible link holder).
The alternator is grounded to the engine block.
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 8 for the charge warning lamp.
Ground is supplied:

to combination meter terminal 22

through alternator terminal 3 (“L” terminal)

to alternator terminal “E”

through ground E2.
The charge warning lamp will illuminate. When the alternator 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 malfunction is indicated.
MALFUNCTION INDICATOR
The IC regulator warning function activates to illuminate charge warning lamp, if any of the following symp-
toms occur while alternator is operating:

Excessive voltage is produced.

No voltage is produced.

SC-28
CHARGING SYSTEM

Wiring Diagram — CHARGE —BKS001MK
TKWM4763E

CHARGING SYSTEM
SC-29
C
D
E
F
G
H
I
J
L
MA
B
SC

Trouble DiagnosisBKS001ML
Before performing an alternator test, make sure that the battery is fully charged. A 30-volt voltmeter and suit-
able test probes are necessary for the test. The alternator can be checked easily by referring to the Inspection
Table.

Before starting, inspect the fusible link.

Use fully charged battery.
WITH IC REGULATOR
NOTE:

If the inspection result is OK even though the charging system is malfunctioning, check the “B” terminal
connection (Check the tightening torque) and voltage drop.

Check condition of rotor coil, rotor slip ring, brush and stator coil. If necessary, replace malfunctioning
parts with new ones.
SKIB0466E

SC-30
CHARGING SYSTEM

Removal and InstallationBKS0027E
VQ23DE AND VQ35DE MODELS
Removal
1. Disconnect negative battery cable.
2. Remove engine undercover, using power tools.
3. Remove radiator. Refer to CO-37, "
RADIATOR" in “ENGINE COOLING SYSTEM (CO)” section.
4. Remove alternator and air conditioner compressor belt. Refer to EM-129, "
Removal and Installation" in
“ENGINE MECHANICAL (EM)” section.
5. Remove idler pulley.
6. Remove alternator mounting nut, using power tools.
7. Remove through bolt.
8. Disconnect alternator connector.
9. Remove B terminal nut.
10. Remove ground harness clip and ground harness mounting nut.
1. Through-bolt 2. Cylinder block 3. Timing chain case
4. Alternator mounting nut 5. Alternator 6. Alternator connector
7. B terminal harness 8. B terminal nut 9. Alternator mounting bolt
10. Alternator bracket 11. Alternator bracket mounting bolt
PKIA2926J
PKIA2431E
PKIA2432E

CHARGING SYSTEM
SC-31
C
D
E
F
G
H
I
J
L
MA
B
SC

11. Remove alternator mounting bolt, using power tools.
12. Remove alternator bracket mounting bolt and alternator bracket.
13. Remove alternator to the direction of upper side the vehicle.
Installation
Note the following, and install in the reverse order of removal.

Install alternator, and check tension of belt. Refer to EM-128, "Checking Drive Belts" in “ENGINE
MECHANICAL (EM)” section.
CAUTION:
Be sure to tighten B terminal nut carefully.
PKIA2433E