2006 INFINITI M35 battery

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)

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STARTING SYSTEM
Revision: 2006 January2006 M35/M45
STARTING SYSTEM PFP:00011
System Description NKS003NI
Power is supplied at all times
through 15A fuse (No. 78, located in the IPDM E/R)
to CPU of IPDM E/R,
through 15A fuse (No. 71, located in the IPDM E/R)
to CPU of IPDM E/R.
Ground is supplied
to IPDM E/R terminals 38 and 51
from grounds E22 and E43.
When the selector lever in the P or N position, power is supplied
from TCM, and through A/T assembly terminal 9
to IPDM E/R terminal 53.
And then provided that IPDM E/R receives a starter relay ON signal with CAN communication, starter relay is
energized.
With the ignition switch in the START position, power is supplied
through IPDM E/R terminal 3
to starter motor terminal 1.
The starter motor plunger closes and provides a closed circuit between the battery and starter motor. The
starter motor is grounded to the engine block. With power and ground supplied, cranking occurs and the
engine starts.

STARTING SYSTEM
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Revision: 2006 January2006 M35/M45
Trouble Diagnosis with Battery/Starting/Charging System Tester (Starting)NKS003NK
NOTE:
To ensure a complete and thorough diagnosis, the battery, starter and alternator test segments must be done
as a set from start to finish.
1. Turn off all loads on the vehicle electrical system.
2. Perform battery test with Battery/Starting/Charging system
tester. Refer to SC-7, "
Trouble Diagnosis with Battery/Starting/
Charging System Tester (Battery)" .
3. Press “ENTER” to begin the starting system test.
4. Start the engine.
5. Diagnostic result is displayed on the tester. Refer to SC-13,
"DIAGNOSTIC RESULT ITEM CHART" .
NOTE:
If the starter performs normally but the engine does not start,
perform engine diagnosis.
For intermittent “NO CRANK” or “NO STARTER OPERA-
TION” incidents, go to DIAGNOSTIC PROCEDURE 2.
DIAGNOSTIC RESULT ITEM CHART
SEL408X
SEL409X
SEL410X
Diagnostic item Service procedure
CRANKING VOLTAGE NORMAL
Go to SC-14, "
WORK FLOW" .
CRANKING VOLTAGE LOW
CHARGE BATTERYPerform the slow battery charging procedure. (Initial rate of charge is 10A for 12 hours.) Perform
battery test again with Battery/Starting/Charging system tester. Refer to SC-7, "
Trouble Diagnosis
with Battery/Starting/Charging System Tester (Battery)" .
REPLACE BATTERYBefore replacing battery, clean the battery cable clamps and battery posts. Perform battery test
again with Battery/Starting/Charging system tester. Refer to SC-7, "
Trouble Diagnosis with Bat-
tery/Starting/Charging System Tester (Battery)" . If second test result is “REPLACE BATTERY”,
then do so. Perform battery test again to confirm repair.

SC-14
STARTING SYSTEM
Revision: 2006 January2006 M35/M45
WORK FLOW
*1SC-7, "Trouble Diagnosis with Bat-
tery/Starting/Charging System Tester
(Battery)"
*2SC-16, "MINIMUM SPECIFICATION
OF CRANKING VOLTAGE REFER-
ENCING COOLANT TEMPERA-
TURE"
*3SC-15, "Check “B” Terminal Circuit"
*4SC-16, "Check “S” Connector Cir-
cuit"
SKIB1369E

STARTING SYSTEM
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Revision: 2006 January2006 M35/M45
DIAGNOSTIC PROCEDURE 1
Check “B” Terminal Circuit
CAUTION:
Perform diagnosis under the condition that engine cannot start by the following procedure.
1. Remove fuel pump fuse.
2. Crank or start the engine (where possible) until the fuel pressure is released.
1. CHECK “B” TERMINAL CIRCUIT
1. Turn ignition switch OFF.
2. Make sure that starter motor “B” terminal connection is clean
and tight.
3. Check voltage between starter motor “B” terminal and ground.
OK or NG
OK >> GO TO 2.
NG >> Check harness between battery and starter motor for open circuit.
2. CHECK BATTERY CABLE CONNECTION STATUS (VOLTAGE DROP TEST)
Check voltage between starter motor battery positive terminal and
starter motor “B” terminal.
OK or NG
OK >> GO TO 3.
NG >> Check harness between the battery and the starter motor for poor continuity.
3. CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)
Check voltage between starter motor case and battery negative ter-
minal.
OK or NG
OK >> “B” terminal circuit is OK. Further inspection necessary.
Refer to SC-14, "
WORK FLOW" .
NG >> Check the starter motor case and ground for poor conti-
nuity.
Terminals
Voltage (Approx.) (+)
(–)
Starter motor
“B” terminalTerminal
E203 2 Ground Battery voltage
PKIB8793E
Terminals
ConditionVoltage
(Approx.)
(+)(–)
Starter motor
“B” terminalTerminal
Battery positive
terminalE203 2 When the ignition
switch is in
START positionLess than
0.5 V
PKIB8794E
Terminals
Condition Voltage (Approx.)
(+) (–)
Starter motor
caseBattery negative
terminalWhen the ignition
switch is in START
positionLess than 0.2 V
PKIB8795E

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STARTING SYSTEM
Revision: 2006 January2006 M35/M45
DIAGNOSTIC PROCEDURE 2
Check “S” Connector Circuit
CAUTION:
Perform diagnosis under the condition that engine cannot start by the following procedure.
1. Remove fuel pump fuse.
2. Crank or start the engine (where possible) until the fuel pressure is released.
1. CHECK “S” CONNECTOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect starter motor connector.
3. Check voltage between starter motor harness connector and
ground.
OK or NG
OK >> “S” connector circuit is OK. Further inspection necessary. Refer to SC-14, "WORK FLOW" .
NG >> Check the following.
Ignition switch and PDU
IPDM E/R
Harness between starter motor and IPDM E/R
MINIMUM SPECIFICATION OF CRANKING VOLTAGE REFERENCING COOLANT TEMPERA-
TURE
Te r m i n a l s
ConditionVoltage
(Approx.) (+)
(–)
Starter motor
connectorTe r m i n a l
F9 (VQ35DE)
E210 (VK45DE)1 GroundWhen the ignition
switch is in
START positionBattery voltage
PKIB8796E
Engine coolant temperature [C (F)] Voltage [V]
30 to 20 (22 to 4) 8.6
19 to 10 (2 to 14) 9.1
9 to 0 (16 to 32) 9.5
More than 1 (More than 34) 9.9

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