stall INFINITI M35 2006 Factory Service Manual

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PRECAUTIONS
Revision: 2006 January2006 M35/M45
PRECAUTIONS PFP:00011
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NKS003NB
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WAR NING :
To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Power Generation Voltage Variable Control SystemNKS003NC
CAUTION:
For this model, the battery current sensor that is installed to the battery cable at the negative terminal
measures the charging/discharging current of the battery, and performs various controls. If the electri-
cal component or the ground wire is connected directly to the battery terminal, the current other than
that being measured with the battery current sensor is charging to or discharging from the battery.
This condition causes the malfunction of the control, and then the battery discharge may occur. Do
not connect the electrical component or the ground wire directly to the battery terminal.

SC-8
BATTERY
Revision: 2006 January2006 M35/M45
7. Press “ENTER” to begin the test. Diagnosis results are dis-
played on the tester. Refer to SC-8, "
DIAGNOSTIC RESULT
ITEM CHART" .
8. Press “ENTER”, then test output code is displayed. Record the
test output code on the repair order.
9. Toggle back to the “DIAGNOSTIC SCREEN” for test results.
NOTE:
If necessary, the tester will ask the user to determine if the bat-
tery has just been charged. Choose the appropriate selection by
pressing the up or down arrow button and then press the
“ENTER” button to make the selection.
When testing a battery installed in a vehicle that has recently
been driven, select “BEFORE CHANGE”.
If the battery has just been slow charged due to a “CHARGE &
RETEST” decision by the tester, and the tester asks the user “BEFORE CHARGE/AFTER CHARGE”,
select “AFTER CHARGE”.
DIAGNOSTIC RESULT ITEM CHART
SEL407X
SEL576X
Diagnostic item Service procedure
GOOD BATTERYBattery is OK, go to “Trouble Diagnosis”, “STARTING SYSTEM”. Refer to SC-13, "
Trouble Diagnosis with
Battery/Starting/Charging System Tester (Starting)" .
REPLACE BATTERYReplace battery.
Before replacing battery, clean the battery cable clamps and battery posts. Perform battery test again with
Battery/Starting/Charging system tester. If second test result is “Replace Battery”, then do so. Perform bat-
tery test again to confirm repair.
BAD CELL-REPLACEReplace the battery. Perform battery test again with Battery/Starting/Charging system tester to confirm
repair.
GOOD-RECHARGEPerform the slow battery charging procedure. (Initial rate of charge is 10 A for 12 hours.) Perform battery
test again with Battery/Starting/Charging system tester.
CHARGE & RETESTPerform the slow battery charging. (Initial rate of charge is 10 A for 12 hours.)
Perform battery test again with Battery/Starting/Charging system tester to confirm repair.
NOTE:
If the tester asks the user “BEFORE CHARGE/AFTER CHARGE”, select “AFTER CHARGE”.

BATTERY
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Revision: 2006 January2006 M35/M45
Removal and Installation NKS003NH
REMOVAL
1. Remove engine room cover RH.
2. Remove battery cover.
3. Remove the clips (A), and remove hoodledge cover RH (1).
4. Loosen battery terminal nuts (1), and disconnect both battery
cables from battery terminals.
CAUTION:
When disconnecting, disconnect the battery cable from the
negative terminal first.
5. Remove battery fix frame mounting nuts (2) and battery fix
frame.
6. Remove relay box (3) from the bracket.
7. Remove battery.
INSTALLATION
Installation is the reverse order of removal.
CAUTION:
When connecting, connect the battery cable to the positive terminal first.
PKIB8791E
PKIB8792E
Battery fix frame mounting nut
: 4.4 Nꞏm (0.45 kg-m, 39 in-lb)
Battery terminal nut
: 5.4 Nꞏm (0.55 kg-m, 48 in-lb)

STARTING SYSTEM
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Revision: 2006 January2006 M35/M45
Removal and Installation NKS003NL
VQ35DE ENGINE MODELS (2WD)
Removal
1. Disconnect the battery cable from the negative terminal.
2. Remove engine front and rear undercover, using power tools.
3. Remove “B” terminal nut (1).
4. Disconnect “S” connector (2).
5. Remove starter motor mounting bolts (A), using power tools.
6. Remove starter motor downward from the vehicle.
Installation
Installation is the reverse order of removal.
CAUTION:
Be sure to tighten “B” terminal nut carefully.
1. Starter motor mounting bolt 2. Harness clip bracket 3. “S” connector
4. “B” terminal nut 5. “B” terminal harness 6. Starter motor
7. Oil pan : Nꞏm (kg-m, ft-lb) : Nꞏm (kg-m, in-lb)
: Engine front
PKIB8799E
PKIB8800E

SC-18
STARTING SYSTEM
Revision: 2006 January2006 M35/M45
VQ35DE ENGINE MODELS (AWD)
Removal
1. Disconnect the battery cable from the negative terminal.
2. Remove engine rear undercover, using power tools.
3. Remove exhaust mounting bracket. Refer to EM-183, "
EXHAUST MANIFOLD AND THREE WAY CATA-
LY S T" .
4. Remove “B” terminal nut (1).
5. Disconnect “S” connector (1).
6. Remove starter motor mounting bolts (A) and harness bracket
(2), using power tools.
7. Remove starter motor downward from the vehicle.
Installation
Installation is the reverse order of removal.
CAUTION:
Be sure to tighten “B” terminal nut carefully.
1. Starter motor mounting bolt 2. Oil pan 3. Starter motor
4. “B” terminal harness 5. “B” terminal nut 6. “S” connector
: Nꞏm (kg-m, ft-lb) : Engine front
PKIB8801E
PKIB8802E
PKIB8803E

STARTING SYSTEM
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Revision: 2006 January2006 M35/M45
VK45DE ENGINE MODELS
Removal
1. Disconnect the battery cable from the negative terminal.
2. Remove engine front and rear undercover, using power tools.
3. Remove left engine mounting insulator and left engine mounting
bracket. Refer to EM-244, "
ENGINE ASSEMBLY" .
4. Remove “B” terminal nut (1).
5. Disconnect “S” connector (2).
6. Remove the bolt (A) and the harness bracket (3).
7. Remove starter motor mounting bolts (B), using power tools.
8. Remove starter motor forward from the vehicle.
Installation
Installation is the reverse order of removal.
CAUTION:
Be sure to tighten “B” terminal nut carefully.
1. Starter motor 2. Starter motor mounting bolt 3. “S” connector
4. “B” terminal harness 5. “B” terminal nut 6. Cylinder block
: Nꞏm (kg-m, ft-lb) : Engine front
PKIB8797E
PKIB8798E

SC-24
CHARGING SYSTEM
Revision: 2006 January2006 M35/M45
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
Power generation voltage variable control system that controls the power generation voltage of the alternator
has been adopted. By performing the power generation voltage variable control, the engine load due to the
power generation of the alternator is reduced and fuel consumption is decreased.
Operation Description
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 perform the power generation voltage variable control according to the battery
condition.
When performing the power generation voltage variable control, ECM calculates the target power genera-
tion voltage according to the battery condition and sends the calculated value 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 controls the power generation voltage by the target power generation voltage based on
the received power generation command signal.
When there is no power generation command signal, the alternator performs the normal power generation
according to the characteristic of the IC regulator.
NOTE:
When any malfunction is detected in the power generation voltage variable control system, the power genera-
tion is performed according to the characteristic of the IC regulator of the alternator.
Main Component Part
BATTERY CURRENT SENSOR
Battery current sensor (1) is installed to the battery cable at the
negative terminal, and it detects the charging/discharging cur-
rent of the battery and sends the voltage signal to ECM accord-
ing to the current value.
SKIB5009E
PKIB8806E

SC-32
CHARGING SYSTEM
Revision: 2006 January2006 M35/M45
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 fuse and fusible link.
OK or NG
OK >> GO TO 3.
NG >> Be sure to eliminate cause of malfunction before installing new fuse.
3. CHECK “E” TERMINAL CONNECTION
Check if “E” terminal (alternator ground harness) is clean and tight.
OK or NG
OK >> GO TO 4.
NG >> Repair “E” terminal connection.
4. CHECK ALTERNATOR DRIVE BELT TENSION
Check alternator drive belt tension. Refer to EM-15, "
Checking Drive Belts" (VQ35DE) or EM-174, "Checking
Drive Belts" (VK45DE).
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 Battery/Starting/Charging
system test. Refer to SC-28, "
Trouble Diagnoses with Battery/Starting/Charging System Tester
(Charging)" .
Unit Power source (Power supply terminals) Fuse and fusible link No.
Alternator Battery (“S” terminal) 36
Combination meter Ignition switch ON (“L” terminal) 14

CHARGING SYSTEM
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Revision: 2006 January2006 M35/M45
Power Generation Voltage Variable Control System Operation InspectionNKS003NQ
CAUTION:
For this model, the battery current sensor that is installed to the battery cable at the negative ter-
minal measures the charging/discharging current of the battery, and performs various controls. If
the electrical component or the ground wire is connected directly to the battery terminal, the cur-
rent other than that being measured with the battery current sensor is charging to or discharging
from the battery. This condition causes the malfunction of the control, and then the battery dis-
charge may occur. Never connect the electrical component or the ground wire directly to the bat-
tery 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
1. CHECK ECM (CONSULT-II)
Perform ECM self-diagnosis with CONSULT-II. Refer to EC-133, "
CONSULT-II Function (ENGINE)"
(VQ35DE) or EC-846, "CONSULT-II Function (ENGINE)" (VK45DE).
Self
-diagnostic results content
No malfunction detected>> GO TO 2.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.
2. CHECK OPERATION OF POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
1. Connect CONSULT-II and start the engine.
2. The selector lever is in “P” or “N” position and all of the electric
loads and A/C, etc. are turned OFF.
3. Select “ALTERNATOR DUTY” at “ACTIVE TEST” of “ENGINE”,
and then check the value of “BATTERY VOLT” monitor when
DUTY value of “ALTERNATOR DUTY” is set to 40.0 %.
4. Check the value of “BATTERY VOLT” monitor when DUTY value
of “ALTERNATOR DUTY” is set to 80.0%.
OK or NG
OK >> INSPECTION END
NG >> GO TO 3. (The charging condition of the battery should
be normal.)
3. CHECK IPDM E/R (CONSULT-II)
Perform IPDM E/R self-diagnosis with CONSULT-II. Refer to PG-20, "
CONSULT-II Function (IPDM E/R)" .
Self
-diagnostic results content
No malfunction detected>> GO TO 4.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts. “BATTERY VOLT”
2 seconds after setting the
DUTY value of “ALTERNA-
TOR DUTY” to 40.0 %: 12 - 13.6 V
PKIB4503E
“BATTERY VOLT”
20 seconds after setting
the DUTY value of “ALTER-
NATOR DUTY” to 80.0 %: +0.5 V or more against
the value of “BATTERY
VOLT” monitor when
DUTY value is 40.0 %
PKIB4504E

CHARGING SYSTEM
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Revision: 2006 January2006 M35/M45
Removal and Installation NKS003NR
VQ35DE ENGINE MODELS
Removal (2WD Models)
1. Disconnect the battery cable from the negative terminal.
2. Remove engine front undercover, using power tools.
3. Remove alternator and power steering oil pump belt. Refer to EM-15, "
DRIVE BELTS" .
4. Disconnect alternator connector (1).
5. Remove “B” terminal nut (2).
6. Remove the harness bracket bolts (A).
7. Remove oil pressure switch harness clip (A) from alternator stay.
8. Disconnect oil pressure switch connector (1).
9. Remove alternator mounting bolt (B) and alternator stay mount-
ing bolt (C) using power tools, then remove alternator stay (2).
10. Remove alternator mounting bolt (D), using power tools.
11. Remove alternator assembly downward from the vehicle.
1. “B” terminal nut 2. “B” terminal harness 3. Alternator connector
4. Alternator mounting bolt 5. Alternator stay mounting bolt 6. Alternator stay
7. Alternator : Nꞏm (kg-m, ft-lb) : Engine front
PKIB8815E
SKIB2605J
PKIB8817E