2007 INFINITI M35 ECO mode

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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IPDM E/R STATUS CONTROL
In order to save power, IPDM E/R switches status by itself based on each operating condition.
1. CAN communication status

CAN communication is normally performed with other control units.

Individual unit control by IPDM E/R is normally performed.

When sleep request signal is received from BCM, mode is switched to sleep transient status.
2. Sleep transient status

Process to stop CAN communication is activated.

All systems controlled by IPDM E/R are stopped. When 3 seconds have elapsed after CAN communi-
cation with other control units is stopped, mode switches to sleep status.
3. Sleep status

IPDM E/R operates in low power mode.

CAN communication is stopped.

When a change in CAN communication line is detected, mode switches to CAN communication status.

When a change hood switch or ignition switch signal is detected, mode switches to CAN communica-
tion status.
CAN Communication System DescriptionNKS004E3
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicles are equipped with many electronic control units and each control unit shares information and links
with other control units during operation (not independent). In CAN communication, control units are con-
nected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission
with less wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitNKS004E4
Refer to LAN-50, "CAN System Specification Chart" .
Function of Detecting Ignition Relay MalfunctionNKS004E5

When contact point of integrated ignition relay is stuck and cannot be turned OFF, IPDM E/R turns ON tail
and parking lamps for 10 minutes to indicate ignition relay malfunction.

When a state of ignition relay having built-in does not agree with a state of Ignition switch signal input by a
CAN communication from BCM, IPDM E/R lets tail lamp relay operate.
NOTE:
When the ignition switch is turned ON, the tail lamps are OFF.
Rear window defogger Rear window defogger relay OFF
A/C compressor A/C relay OFF
Front fog lamps Front fog lamp relay OFF Controlled system Fail-safe mode
Ignition switch signal Ignition relay status Tail lamp relay
ON ON —
OFF OFF —
ON OFF —
OFF ON ON (10 minutes)

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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Auto Active TestNKS004E7
DESCRIPTION
In auto active test mode, operation inspection can be performed when IPDM E/R sends a drive signal to the
following systems:

Rear window defogger

Front wiper (LO, HI)

Tail lamps, parking lamps and license plate lamps

Front fog lamps

Headlamps (LO, HI)

A/C compressor (magnetic clutch)

Cooling fan

Oil pressure warning lamp
OPERATION PROCEDURE
1. Close hood and front door (passenger side), and then lift wiper arms away from windshield (to prevent
glass damage by wiper operation).
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
2. Turn ignition switch OFF.
3. Turn ignition switch ON, and within 20 seconds, press driver's door switch 10 times (close other doors).
Then turn ignition switch OFF.
4. Turn ignition switch ON within 10 seconds after ignition switch OFF.
5. When auto active test mode is actuated, horn chirps once. Oil pressure warning lamp starts blinking.
6. After a series of operations is repeated three times, auto active test is completed.
NOTE:
When auto active test mode has to be cancelled halfway, turn ignition switch OFF.
CAUTION:

Never start the engine.

If the engine starting operation is made, delete DTC on the self-diag results of CONSULT-II.
Refer to BL-79, "
CONSULT-II Application Items" .

Be sure to inspect GW-50, "Check door Switch" when the auto active test cannot be performed.

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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2007 April2007 M35/M45
INSPECTION IN AUTO ACTIVE TEST MODE
When auto active test mode is actuated, the following eight steps are repeated three times.
(A): Oil pressure warning lamp is blinking when the auto active test operating.
Operation steps
PKIC0273E
Test item Operation time/ frequency
1 Rear window defogger 10 seconds
2 Front wiper LO 5 seconds → HI 5 seconds
3 Tail lamps, parking lamps, license plate lamps 10 seconds
4 Front fog lamps 10 seconds
5 Headlamp (LO) 10 seconds
6 Headlamp (HI) ON-OFF 5 times
7 A/C compressor (magnetic clutch) ON-OFF 5 times
8 Cooling fan LO 5 seconds → HI 5 seconds

PG-42
PDU (POWER DISTRIBUTION UNIT)
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3. PUSH-BUTTON IGNITION SWITCH INDICATOR GROUND CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit connector and
push-button ignition switch connector.
3. Check continuity between push-button ignition switch connector.
OK or NG
OK >> Check harness condition.
NG >> Repair or replace harness.
PDU Communication Circuit System 1NKS004EO
1. CHECK PDU COMMUNICATION CIRCUIT 1
1. Turn ignition switch OFF.
2. Check voltage between Intelligent Key unit connector and
ground.
OK or NG
OK >> Check harness condition.
NG >> GO TO 2.
AB
Continuity
Intelligent Key
unit connectorTe r m i n a lPush-button
ignition switch
connectorTerminal
M328
M275
Ye s 96
10 7
Push-button ignition
switch connectorTerminal Continuity
M275
Ground No 6
7
PIIB6123E
Intelligent Key
unit connectorTerminal ConditionVoltage (V)
(Approx)
M3342 GroundDriver side door is opened
(PDU wake up mode)0
Push-button ignition switch is in
lock state, 30 seconds after all
doors are closed (PDU sleep
mode)Battery
voltage
45 GroundPush-button ignition switch is in
LOCK positionBattery
voltage
Push-button ignition switch is in
ACC position0
Push-button ignition switch is in
ON position0
PIIB6124E

PRECAUTIONS
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PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NGS000CZ
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.
WARNING:

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 Necessary for Steering Wheel Rotation After Battery DisconnectNGS000D0
NOTE:

This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).

Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK″ position.

Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-III.

PS-30
POWER STEERING OIL PUMP
Revision: 2007 April2007 M35/M45
POWER STEERING OIL PUMPPFP:49110
On-Vehicle Inspection and ServiceNGS000DE
CHECKING RELIEF OIL PRESSURE
CAUTION:
Make sure that belt tension is normal before starting the following procedure.
1. Connect the hydraulic pressure gauge [SST] between oil pump
discharge connector and high-pressure hose. Bleed air from the
hydraulic circuit while opening valve fully. Refer to PS-8, "
Air
Bleeding Hydraulic System" .
2. Start engine. Run engine until oil temperature reaches 50 to
80°C (122 to 176°F).
CAUTION:

Leave the valve of the hydraulic pressure gauge [SST]
fully open while starting and running engine. If engine is
started with the valve closed, the hydraulic pressure in
oil pump goes up to the relief pressure along with
unusual increase of oil temperature.

Be sure to keep hose clear of belts and other parts when
engine is started.
3. Fully close the hydraulic pressure gauge [SST] valve with
engine at idle and measure the relief oil pressure.
CAUTION:
Never keep valve closed for 10 seconds or longer.
4. Open the valve slowly after measuring. Repair oil pump if the
relief oil pressure is outside the standard. Refer to PS-31, "
Dis-
assembly and Assembly (Models with VK45DE)" , PS-35, "Disassembly and Assembly (Models with
VQ35DE)" .
5. After inspection, disconnect the hydraulic pressure gauge [SST] from hydraulic circuit, then add fluid and
bleed air. Refer to PS-8, "
Air Bleeding Hydraulic System" .
Removal and InstallationNGS000DF
REMOVAL
1. Drain power steering fluid from reservoir tank.
2. Remove undercover from vehicle with a power tool.
3. Loosen drive belt. Refer to EM-16, "
DRIVE BELTS" (VQ35DE), EM-174, "DRIVE BELTS" (VK45DE).
4. Remove drive belt from oil pump pulley.
5. Remove piping of high pressure and low pressure (drain fluid from their pipings). Refer to PS-39,
"HYDRAULIC LINE" .
6. Remove power steering oil pump mounting bolts, and then remove power steering oil pump. Refer to PS-
39, "Removal and Installation" .
INSTALLATION
Installation is the reverse order of removal. For tightening torque, refer to PS-39, "HYDRAULIC LINE" .

Perform the following procedure after installing.
–Adjust belt tension (VQ35DE). Refer to EM-16, "Tension Adjustment" .
–About the installation of VK45DE drive belt, refer to EM-174, "Tension Adjustment" .
–Bleed air. Refer to PS-8, "Air Bleeding Hydraulic System" . Relief oil pressure:
8,520 - 9,320 kpa (86.9 - 95.1 kg/cm
2 , 1,235 - 1,351 psi)
SGIA0915E

FRONT OIL SEAL
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6. Install attachment to side flange, and then pull out the side
flange with the sliding hammer.

For VQ35DE models
NOTE:
Circular clip installation position: Final drive side

For VK45DE models
NOTE:
Circular clip installation position: Final drive side
7. Remove propeller shaft. Refer to PR-8, "
Removal and Installa-
tion" .
8. Measure the total preload with the preload gauge.
NOTE:
Record the preload measurement.
9. Put matching mark (B) on the end of the drive pinion. The
matching mark (B) should be in line with the matching mark (A)
on companion flange (1).
CAUTION:
For matching mark, use paint. Do not damage companion
flange and drive pinion.
NOTE:
The matching mark (A) on the final drive companion flange (1)
indicates the maximum vertical runout position.
10. Remove drive pinion lock nut using the flange wrench.Tool number A: KV40104100 ( — )
B: ST36230000 (J-25840-A)
SDIA1582E
Tool number A: KV40101000 ( — )
B: ST36230000 (J-25840-A)
SDIA1583E
Tool number A: ST3127S000 (J-25765-A)
PDIA0977E
PDIA0750J
PDIA0978E

RFD-14
SIDE OIL SEAL
Revision: 2007 April2007 M35/M45
SIDE OIL SEALPFP:33142
Removal and InstallationNDS000F6
REMOVAL
1. Remove center muffler with a power tool. Refer to EX-3, "EXHAUST SYSTEM" .
2. Remove rear wheel sensor. Refer to BRC-54, "
WHEEL SENSOR" .
3. Remove drive shaft from final drive with a power tool. Then suspend it by wire etc. Refer to RAX-8, "
REAR
DRIVE SHAFT" .
4. Install attachment to side flange, and then pull out the side
flange with the sliding hammer.

For VQ35DE models
NOTE:
Circular clip installation position: Final drive side

For VK45DE models
NOTE:
Circular clip installation position: Final drive side
5. Remove side oil seal, using a flat-bladed screwdriver.
CAUTION:
Be careful not to damage gear carrier.
INSTALLATION
1. Apply multi-purpose grease to side oil seal lips.
2. Install side oil seal until it becomes flush with the case end,
using the drift.
CAUTION:

Do not reuse oil seal.

When installing, do not incline oil seal.Tool number A: KV40104100 ( — )
B: ST36230000 (J-25840-A)
SDIA1582E
Tool number A: KV40101000 ( — )
B: ST36230000 (J-25840-A)
SDIA1583E
SDIA1584E
Tool number : KV38100200 (J-26233)
SDIA1585E