2007 NISSAN 350Z alternator

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STARTING & CHARGING SYSTEM
K ELECTRICAL
CONTENTS
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Revision: 2006 November2007 350Z
STARTING & CHARGING SYSTEM
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
Precautions for Battery Service ................................ 2
PREPARATION ........................................................... 3
Special Service Tools ............................................... 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
CHARGING THE BATTERY ................................. 6
Trouble Diagnoses with Battery Service Center ....... 7
Removal and Installation .......................................... 7
REMOVAL ............................................................. 7
INSTALLATION ..................................................... 7
STARTING SYSTEM .................................................. 8
System Description .................................................. 8
M/T MODELS ........................................................ 8
A/T MODELS ........................................................ 9
Wiring Diagram — START — ................................. 10
M/T MODELS ...................................................... 10
A/T MODELS ...................................................... 12
Trouble Diagnoses with Starting/Charging System
Tester (Starting) ...................................................... 13
DIAGNOSTIC PROCEDURE 1 ........................... 14
DIAGNOSTIC PROCEDURE 2 ........................... 15MINIMUM SPECIFICATION OF CRANKING
VOLTAGE REFERENCING COOLANT TEM-
PERATURE ......................................................... 16
Removal and Installation ........................................ 17
REMOVAL ........................................................... 17
INSTALLATION ................................................... 18
Disassembly and Assembly .................................... 19
TYPE: S114-928 .................................................. 19
INSPECTION AFTER DISASSEMBLY ................ 19
CHARGING SYSTEM ............................................... 20
System Description ................................................. 20
MALFUNCTION INDICATOR .............................. 20
Wiring Diagram — CHARGE — ............................. 21
Trouble Diagnoses with Starting/Charging System
Tester (Charging) .................................................... 22
PRELIMINARY INSPECTION ............................. 23
DIAGNOSTIC PROCEDURE 1 ........................... 23
DIAGNOSTIC PROCEDURE 2 ........................... 24
DIAGNOSTIC PROCEDURE 3 ........................... 24
DIAGNOSTIC PROCEDURE 4 ........................... 24
Removal and Installation ........................................ 26
REMOVAL ........................................................... 26
ALTERNATOR PULLEY INSPECTION ............... 27
INSTALLATION ................................................... 27
Disassembly and Assembly .................................... 28
TYPE: A3TJ1991 ................................................. 28
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 29
Battery .................................................................... 29
Starter ..................................................................... 29
Alternator ................................................................ 29

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CHARGING SYSTEM
Revision: 2006 November2007 350Z
CHARGING SYSTEMPFP:23100
System DescriptionNKS0000E
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 140A 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 23 for the charge warning lamp.
Ground is supplied with power and ground supplied

to terminal 17 of combination meter

through alternator terminal 3 (“L” terminal)

through case ground.
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.

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CHARGING SYSTEM
Revision: 2006 November2007 350Z
Trouble Diagnoses with Starting/Charging System Tester (Charging)NKS0000G
For charging system testing, use Starting/Charging System Tester (J-44373). For details and operating
instructions, refer to Technical Service Bulletin.
*1SC-23, "Check “L” Terminal Circuit
(Open)"
*2SC-24, "Check “L” Terminal Circuit
(Short)"
*3SC-24, "Check “S” Terminal Circuit"
*4SC-24, "Check “B” Terminal Circuit"*5SC-27, "ALTERNATOR PULLEY
INSPECTION"
SKIB0527E

CHARGING SYSTEM
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Revision: 2006 November2007 350Z
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 terminals connection.
2. CHECK FUSE AND FUSIBLE LINK
Check for blown alternator and combination meter fuses and fusible links.
OK or NG
OK >> GO TO 3.
NG >> Be sure eliminate cause of malfunction before installing new fuse and fusible link.
3. CHECK ALTERNATOR DRIVE BELT TENSION
Check alternator drive belt tension. Refer to EM-12, "
Checking Drive Belts" .
OK or NG
OK >> INSPECTION END
NG >> Repair as needed.
DIAGNOSTIC PROCEDURE 1
Check “L” Terminal Circuit (Open)
1. CHECK “L” TERMINAL CONNECTION
1. Turn ignition switch OFF.
2. Check if “L” terminal is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair “L” terminal connection. Confirm repair by performing complete Starting/Charging system
test. Refer to Technical Service Bulletin.
2. CHECK “L” TERMINAL CIRCUIT (OPEN)
1. Disconnect alternator connector.
2. Apply ground to alternator harness connector terminal.
3. Check condition the charge warning lamp with the ignition
switch in the ON position.
OK or NG
OK >> Go to SC-22, "Trouble Diagnoses with Starting/Charging
System Tester (Charging)" .
NG >> Check the following.

Harness for open between combination meter and alternator

Harness for open between combination meter and fuse

Charge warning lamp (Combination meter)
Unit Power source (Power supply terminals) Fuse and fusible link No.
Alternator Battery (“S” terminal) 36, letter B, letter A
Combination meter Ignition switch ON (“L” terminal) 14
Alternator
connectorTerminal
GroundCondition
Ignition switch
positionCharge warning
lamp
F58 3 ON illuminate
PKIB8807E

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CHARGING SYSTEM
Revision: 2006 November2007 350Z
DIAGNOSTIC PROCEDURE 2
Check “L” Terminal Circuit (Short)
1. CHECK “L” TERMINAL CIRCUIT (SHORT)
1. Turn ignition switch OFF.
2. Disconnect alternator connector.
3. Turn ignition switch ON.
Charge warning lamp should light up?
YES >> Check the following.

Harness for short between combination meter and alternator

Charge warning lamp (Combination meter)
NO >> Go to SC-22, "
Trouble Diagnoses with Starting/Charging System Tester (Charging)" .
DIAGNOSTIC PROCEDURE 3
Check “S” Terminal Circuit
1. CHECK “S” TERMINAL CONNECTION
1. Turn ignition switch OFF.
2. Check if “S” terminal is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair “S” terminal connection. Confirm repair by performing complete Starting/Charging system
test. Refer to Technical Service Bulletin.
2. CHECK “S” TERMINAL CIRCUIT
1. Disconnect alternator connector.
2. Check voltage between alternator harness connector and
ground.
OK or NG
OK >> Go to SC-22, "Trouble Diagnoses with Starting/Charging
System Tester (Charging)" .
NG >> Harness for open between alternator and fuse.
DIAGNOSTIC PROCEDURE 4
Check “B” Terminal Circuit
1. CHECK “B” TERMINAL CONNECTION
1. Turn ignition switch OFF.
2. Check if “B” terminal is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair “B” terminal connection. Confirm repair by performing complete Starting/Charging system
test. Refer to Technical Service Bulletin.
Terminals
Voltage (Approx.) (+)
(–)
Alternator connector Terminal
F58 4 Ground Battery voltage
PKIB8808E

CHARGING SYSTEM
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Revision: 2006 November2007 350Z
2. CHECK “B” TERMINAL CIRCUIT
Check voltage between alternator “B” terminal and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between alternator and fusible
link.
3. CHECK “B” TERMINAL CONNECTION (VOLTAGE DROP TEST)
1. Start engine, then engine running at idle and warm.
2. Check voltage between battery positive terminal and alternator
“B” terminal.
OK or NG
OK >> Go to SC-22, "Trouble Diagnoses with Starting/Charging
System Tester (Charging)" .
NG >> Check harness between battery and alternator for poor continuity.
Te r m i n a l s
Voltage (Approx.) (+)
(–)
Alternator “B” terminal Terminal
E205 1 Ground Battery voltage
PKIB8809E
Terminals
Voltage
(Approx.)
(+)(–)
Alternator “B” terminal Terminal
Battery positive
terminalE205 1 Less than 0.2 V
PKIB8810E

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CHARGING SYSTEM
Revision: 2006 November2007 350Z
Removal and Installation NKS0000H
REMOVAL
1. Open the driver and front passenger window, and then disconnect the battery cable from the negative ter-
minal.
CAUTION:
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent
any interference between the window edge and the vehicle when the door is opened/closed. Dur-
ing normal operation, the window slightly raises and lowers automatically to prevent any window
to vehicle interference. The automatic window function will not work with the battery discon-
nected.
2. Remove engine undercover, using power tools.
3. Remove air cleaner assembly and harness clip. Refer to EM-15, "
AIR CLEANER AND AIR DUCT" .
4. Remove radiator cooling fan assembly. Refer to CO-21, "
COOLING FAN" .
5. Remove alternator and power steering oil pump belt. Refer to EM-12, "
Removal and Installation" .
6. Disconnect alternator connector (1).
7. Remove “B” terminal mounting nut (2).
8. Remove the harness bracket bolts (A).
1. “B” terminal mounting nut 2. “B” terminal harness 3. Alternator connector
4. Alternator mounting bolt 5. Alternator stay mounting bolt 6. Alternator stay
7. Alternator
:Vehicle front
Refer to GI-11, "
Components" for symbols not described on the above.
PKID1185E
SKIB2605J

CHARGING SYSTEM
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Revision: 2006 November2007 350Z
9. Remove oil pressure switch harness clip (C) from alternator stay
(1).
10. Disconnect oil pressure switch connector (D) and oil tempera-
ture sensor connector (E).
11. Remove alternator mounting bolt (B) and alternator stay mount-
ing bolt (F) using power tools, then remove alternator stay.
12. Remove alternator mounting bolt (A), using power tools.
13. Remove alternator assembly downward from the vehicle.
ALTERNATOR PULLEY INSPECTION
Perform the following.

Make sure that alternator pulley does not rattle.

Make sure that alternator pulley nut is tight.
INSTALLATION
Installation is the reverse order of removal.

Install alternator, and check tension of belt. Refer to EM-12, "Checking Drive Belts" .
CAUTION:
Be sure to tighten “B” terminal nut carefully.
PKID1145E
Alternator pulley nut:
: 118 N·m (12.0 kg-m, 87 ft-lb)