egr INFINITI FX35 2004 Service Manual

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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2004 November 2004 FX35/FX45
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7
System DescriptionAKS005S9

IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse block
which were originally placed in engine room. It controls integrated relay via IPDM E/R control circuit.

IPDM E/R-integrated control circuit performs ON-OFF operation of relay, CAN communication control, oil
pressure switch signal, hood switch signal reception, etc.

It controls operation of each electrical part via ECM, BCM and CAN communication lines.
CAUTION:
None of the IPDM E/R-integrated relays can be removed.
SYSTEMS CONTROLLED BY IPDM E/R
1. Lamp control
Using CAN communication line, it receives signal from BCM and controls the following lamps:

Headlamps (Hi, Lo)

Parking lamps

Tail lamps

Front fog lamps
2. Wiper control
Using CAN communication line, it receives signals from BCM and controls the front wipers.
3. Rear window defogger relay control
Using CAN communication line, it receives signals from BCM and controls the rear window defogger
relay.
4. A/C compressor control
Using CAN communication line, it receives signals from ECM and controls the A/C relay.
5. Cooling fan control
Using CAN communication line, it receives signals from ECM and controls cooling fan relay.
6. Horn control
Using CAN communication line, it receives signals from BCM and controls horn relay.
CAN COMMUNICATION LINE CONTROL
With CAN communication, by connecting each control unit using two communication lines (CAN L line, CAN H
line), it is possible to transmit maximum amount of information with minimum wiring. Each control unit can
transmit and receive data, and reads necessary information only.
1. Fail-safe control

When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control.
After CAN communication recovers normally, it also returns to normal control.

Operation of control parts by IPDM E/R during fail-safe mode is as follows:
Controlled system Fail-safe mode
Headlamp

With the ignition switch ON, the headlamp (low) is ON.

With the ignition switch OFF, the headlamp (low) is OFF.
Tail and parking lamps

With the ignition switch ON, the tail and parking lamps is ON.

With the ignition switch OFF, the tail and parking lamps is OFF.
Cooling fan

With the ignition switch ON, the cooling fan HI operates.

With the ignition switch OFF, the cooling fan stops.
Front wiperUntil the ignition switch is turned off, the front wiper LO and HI remains in the same status it
was in just before fail−safe control was initiated.
Rear window defogger Rear window defogger relay OFF
A/C compressor A/C compressor OFF
Front fog lamps Front fog lamp relay OFF

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 waiting status.
2. Sleep waiting status

Process to stop CAN communication is activated.

All systems controlled by IPDM E/R are stopped. When 1 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 current-consumption 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 DescriptionAKS005SA
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 UnitAKS00AOF
Refer to LAN-6, "CAN Communication Unit" .
Function of Detecting Ignition Relay MalfunctionAKS005SB

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 IPDM E/R 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 lamp is OFF.
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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Concept of Auto Active Test

IPDM E/R actuates auto active test mode when it receives door switch signal from BCM via CAN commu-
nication line. Therefore, when auto active test mode is activated successfully, CAN communication
between IPDM E/R and BCM is normal.

If any of systems controlled by IPDM E/R cannot be operated, possible cause can be easily diagnosed
using auto active test.
Diagnosis chart in auto active test mode
Symptom Inspection contents Possible cause
Any of front wipers, tail
and parking lamps, front
fog lamps, and head
lamps (Hi, Lo) do not
operate.Perform auto active
test. Does system in
question operate?YES

BCM signal input system
NO

Lamp/wiper motor malfunction

Lamp/wiper motor ground circuit malfunction

Harness/connector malfunction between IPDM E/R and system in question

IPDM E/R (integrated relay) malfunction
Rear window defogger
does not operate.Perform auto active
test. Does rear win-
dow defogger oper-
ate?YES

BCM signal input circuit
NO

Rear window defogger relay circuit

Open circuit of rear window defogger

IPDM E/R malfunction
A/C compressor does
not operate.Perform auto active
test. Does mag-
netic clutch oper-
ate?YES

BCM signal input circuit

CAN communication signal between BCM and ECM.

CAN communication signal between ECM and IPDM E/R
NO

Magnetic clutch malfunction

Harness/connector malfunction between IPDM E/R and magnetic clutch

IPDM E/R (integrated relay) malfunction
Cooling fan does not
operate.Perform auto active
test. Does cooling
fan operate?YES

ECM signal input circuit

CAN communication signal between ECM and IPDM E/R
NO

Cooling fan motor malfunction

Harness/connector malfunction between IPDM E/R and cooling fan motor

IPDM E/R (integrated relay) malfunction
Oil pressure warning
lamp does not operate.Perform auto active
test. Does oil pres-
sure warning lamp
blink?YES

Harness/connector malfunction between IPDM E/R and oil pressure switch

Oil pressure switch malfunction

IPDM E/R malfunction
NO

CAN communication signal between BCM and Unified Meter and A/C Amp

Combination meter

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HARNESS
Revision: 2004 November 2004 FX35/FX45
H/AIM LT Headlamp Aiming Control System
H/LAMP LT Headlamp
HORN WW Horn
HSEAT SE Heated Seat
I/KEY BL Intelligent Key System
I/MIRR GW Inside Mirror (Auto Anti-Dazzling Mirror)
IATS EC Intake Air Temperature Sensor
ICC ACS Intelligent Cruise Control System
ICC/BS EC ICC Brake Switch
ICC/SW EC ICC Steering Switch
ICCBOF EC ICC Brake Switch
IGNSYS EC Ignition System
ILL LT Illumination
INF/D AV Vehicle Information and Integrated Switch System
INJECT EC Injector
IVCB1 EC Intake Valve Timing Control Solenoid Valve Bank 1
IVCB2 EC Intake Valve Timing Control Solenoid Valve Bank 2
IVCSB1 EC Intake Valve Timing Control Position Sensor Bank 1
IVCSB2 EC Intake Valve Timing Control Position Sensor Bank 2
IVTB1 EC Intake Valve Timing Control System (Bank 1)
IVTB2 EC Intake Valve Timing Control System (Bank 2)
KEYLES BL Remote Keyless Entry System
KS EC Knock Sensor
M/ANT AV Manual Antenna
MAFS EC Mass Air Flow Sensor
MAIN EC Main Power Supply And Ground Circuit
MES AV Mobile Entertainment System
METER DI Speedometer, Tachometer, Temp., And Fuel Gauges
MIL/DL EC Mil&Data Link Connectors
MIRROR GW Power Door Mirror
MMSW AT Manual Mode Switch
NATS BL Nissan Anti - Theft System
NAVI AV Navigation System
NONDTC AT Non-Detective Items
O2H1B1 EC Heated Oxygen Sensor 1 Heater Bank 1
O2H1B2 EC Heated Oxygen Sensor 1 Heater Bank 2
O2H2B1 EC Heated Oxygen Sensor 2 Heater Bank 1
O2H2B2 EC Heated Oxygen Sensor 2 Heater Bank 2
O2S1B1 EC Heated Oxygen Sensor 1 Bank 1
O2S1B2 EC Heated Oxygen Sensor 1 Bank 2
O2S2B1 EC Heated Oxygen Sensor 2 Bank 1
O2S2B2 EC Heated Oxygen Sensor 2 Bank 2
P/SCKT WW Power Socket
PGC/V EC Evap Canister Purge Volume Control Solenoid Valve Code Section Wiring Diagram Name

PR-4
FRONT PROPELLER SHAFT
Revision: 2004 November 2004 FX35/FX45
FRONT PROPELLER SHAFTPFP:37200
On-Vehicle ServiceADS000KL
PROPELLER SHAFT VIBRATION
If vibration is present at high speed, inspect propeller shaft runout first.
1. Measure propeller shaft runout at several points by rotating final
drive companion flange with your hands.
2. If runout still exceeds specifications, disconnect propeller shaft
at the final drive companion flange; then rotate companion
flange 90, 180, 270 degrees and reconnect propeller shaft.
3. Check runout again. If runout still exceeds specifications,
replace propeller shaft assembly.
4. Check the vibration by driving the vehicle.
APPEARANCE CHECKING

Inspect propeller shaft tube surface for dents or cracks. If damaged, replace propeller shaft assembly.
Removal and InstallationADS000KM
REMOVAL
1. Remove the front and rear engine undercover with power tool.
2. Remove the front cross bar with power tool. Refer to FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
3. Remove the exhaust front tube bracket with power tool. Refer to EX-3, "
EXHAUST SYSTEM" .
4. Disconnect the heated oxygen sensor harness connector.
5. Remove the exhaust front tube mounting nuts with power tool. Refer to EX-3, "
EXHAUST SYSTEM" .
6. Remove the right bank catalytic converter with power tool. Refer to EM-26, "
Removal and Installation"
(VQ35DE) or EM-178, "Removal and Installation" (VK45DE).
7. Remove the power steering piping mounting bolts. Refer to PS-
41, "HYDRAULIC LINE" .
8. Remove the power steering gear box fixing bolts to secure work-
ing area for removal of propeller shaft. Refer to PS-19, "
POWER
STEERING GEAR AND LINKAGE" .
CAUTION:
Be careful not to damage the steering gear box piping dur-
ing removal.Propeller shaft runout limit : 0.6 mm (0.024 in) or less
SDIA1759E
SDIA1515E
1. Propeller shaft assembly 2. O-ring
SDIA1516E

FRONT PROPELLER SHAFT
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9. Put matching marks on propeller shaft flange and companion
flange on the front drive as shown.
CAUTION:
For matching mark, use paint. Never damage the propeller
shaft flange and companion flange on the front drive.
10. Set the transmission jack at the transfer, remove the mounting
bolts and rear engine mounting bracket. On the VK45DE engine,
lower the transmission jack about 40 - 50 mm (0.16 - 0.20 in).
11. Remove the bolts and then remove the propeller shaft from the
front final drive and transfer.
INSPECTION
1. As shown in the figure, while fixing yoke on one side, check axial
play of joint. If outside the standard, replace propeller shaft
assembly.
2. Check propeller shaft for bend and damage. If damage is
detected, replace propeller shaft assembly.
INSTALLATION
Note the following, install in the reverse order of removal.

Install the propeller shaft into the transfer.

Install the propeller shaft onto the front final drive flange while
matching marks that are marked during removal.

Tighten the drive flange bolts to specified torque.
CAUTION:
Do not reuse the bolts and nuts. Always replace it with a
new one.

After installation, check the vibration by driving the vehicle. If the
vibration is present, remove the propeller shaft from the final
drive companion flange and turn the propeller shaft 90, 180 or
270 degrees and reinstall the propeller shaft to the companion
flange.
Recheck the vibration by driving the vehicle.
SDIA1517E
SDIA1518E
Journal axial play : 0 mm (0 in)
PDA0005D
SDIA1517E

PR-6
REAR PROPELLER SHAFT
Revision: 2004 November 2004 FX35/FX45
REAR PROPELLER SHAFTPFP:37000
Service InformationADS000KK
Do not support the rear cover (aluminium), when supporting the gear carrier with a transmission jack.
On-Vehicle ServiceADS000KE
PROPELLER SHAFT VIBRATION
CAUTION:
If vibration is present at high speed, check mounting between propeller shaft and companion flange.
If vibration is present at high speed, check propeller shaft runout first.
1. Measure propeller shaft runout at several points by rotating final
drive companion flange with your hands.
2. If runout still exceeds specifications, disconnect propeller shaft
at final drive companion flange: then rotate companion flange
90, 180, 270 degrees and reconnect propeller shaft.
3. Check runout again. If runout still exceeds specifications,
replace propeller shaft assembly.
4. Perform driving test to check.
5. If the runout exceeds the service limit, do the following:

Remove the propeller shaft from the final drive companion flange.

Turn the propeller shaft 60, 120, 180, 240, 300 degrees and reinstall the propeller shaft to the compan-
ion flange, then measure the runout again.

If the runout still exceeds the service limit, replace the propeller shaft assembly.

Check the vibration by driving the vehicle.
APPEARANCE AND NOISE INSPECTION

Inspect propeller shaft tube surface for dents or cracks. If damaged, replace propeller shaft assembly.

If center bearing is noisy or damaged, replace propeller shaft assembly.Propeller shaft runout limit : 0.6 mm (0.024 in) or less
SDIA1781E

REAR PROPELLER SHAFT
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3. If the propeller shaft or final drive has been replaced, connect
the propeller shaft and final drive as follows:
NOTE:
Avoid damaging the rebro joint boot, protect it with a shop towel
or equivalent.

Install the propeller shaft while aligning its matching mark A
with the mark C on the joint as close as possible.

Tighten the joint bolts/nuts to specified torque.
CAUTION:
Do not reuse the bolts, and washers. Always replace the
them with new ones.

After installation, check the vibration by driving the vehicle. If the vibration is present, remove the pro-
peller shaft from the final drive companion flange.

Turn the propeller shaft 60, 120, 180, 240 or 300 degrees and reinstall the propeller shaft to the com-
panion flange, then measure the runout again by driving the vehicle on each angle position.
Disassembly and AssemblyADS000KN
DISASSEMBLY
Center Bearing
NOTE:

The joint cannot be disassembled.

The center bearing can be disassembled.
1. Remove the propeller shaft assembly from the vehicle. Refer to PR-8, "
REMOVAL" .
2. Put matching marks on propeller shaft and center flange, then
disassemble the 1st and 2nd propeller shaft.
CAUTION:
For matching mark, use paint. Never damage the propeller
shaft flange and center flange.
3. Put matching marks onto the center flange and propeller shaft
end as shown.
4. Stake center flange lock nut with a punch (except 3F80A-
1VL107- type/VK45DE, AWD).
SDIA0768E
SDIA1538E
SDIA1539E

PS-46
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2004 November 2004 FX35/FX45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Steering WheelAGS000H7
Steering AngleAGS000H8
Steering ColumnAGS000H9
Steering Outer Socket and Inner SocketAGS000HA
End play of the axle direction for steering wheel 0 mm (0 in)
Steering wheel play on the outer circumference 0 − 35 mm (0 − 1.38 in)
Inner wheel
Degree minute (Decimal degree)Minimum 32°00′ (32.0°)
Nominal 35°00′ (35.0°)
Maximum 36°00′ (36.0°)
Outer wheel
Degree minute (Decimal degree)Nominal 30°00′ (30.0°)
Steering column length “ L1 ” 572 mm (22.52 in)
SGIA0556E
Steering gear typePR26AM
Tie-rod ball joint outer socketSwinging torque 0.3 − 2.9 N·m (0.03 − 0.29 kg-m, 3 − 25 in-lb)
Measurement on spring balance

Measuring point: cotter pin hole of stud4.84 − 46.7 N (0.50 − 4.7 kg, 4 − 34 lb)
Rotating torque 0.3 − 2.9 N·m (0.03 − 0.29 kg-m, 3 − 25 in-lb)
Axial end play 0.5 mm (0.020 in) or less
Tie-rod ball joint inner socketSwinging torque 1.0 − 7.8 N·m (0.11 − 0.79 kg-m, 9 − 69 in-lb)
Measurement on spring balance

Measuring point: L mark see below,
L=83.2 mm (3.276 in).12.1 − 93.7 N (1.3 − 9.5 kg, 9 − 69 lb)
Axial end play 0.2 mm (0.08 in) or less
SGIA0358E

RF-4
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Revision: 2004 November 2004 FX35/FX45
SQUEAK AND RATTLE TROUBLE DIAGNOSESPFP:00000
Work FlowAIS0059I
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist when the noise occurs. Use the Diag-
nostic Worksheet during the interview to document the facts and conditions when the noise occurs and any
customer's comments; refer to RF-8, "
Diagnostic Worksheet" . This information is necessary to duplicate the
conditions that exist when the noise occurs.

The customer may not be able to provide a detailed description or the location of the noise. Attempt to
obtain all the facts and conditions that exist when the noise occurs (or does not occur).

If there is more than one noise in the vehicle, be sure to diagnose and repair the noise that the customer
is concerned about. This can be accomplished by test driving the vehicle with the customer.

After identifying the type of noise, isolate the noise in terms of its characteristics. The noise characteristics
are provided so the customer, service adviser and technician are all speaking the same language when
defining the noise.

Squeak —(Like tennis shoes on a clean floor)
Squeak characteristics include the light contact/fast movement/brought on by road conditions/hard sur-
faces=higher pitch noise/softer surfaces=lower pitch noises/edge to surface=chirping

Creak—(Like walking on an old wooden floor)
Creak characteristics include firm contact/slow movement/twisting with a rotational movement/pitch
dependent on materials/often brought on by activity.

Rattle—(Like shaking a baby rattle)
Rattle characteristics include the fast repeated contact/vibration or similar movement/loose parts/missing
clip or fastener/incorrect clearance.

Knock —(Like a knock on a door)
Knock characteristics include hollow sounding/sometimes repeating/often brought on by driver action.

Tick—(Like a clock second hand)
Tick characteristics include gentle contacting of light materials/loose components/can be caused by driver
action or road conditions.

Thump—(Heavy, muffled knock noise)
Thump characteristics include softer knock/dead sound often brought on by activity.

Buzz—(Like a bumble bee)
Buzz characteristics include high frequency rattle/firm contact.

Often the degree of acceptable noise level will vary depending upon the person. A noise that you may
judge as acceptable may be very irritating to the customer.

Weather conditions, especially humidity and temperature, may have a great effect on noise level.
SBT842