ignition INFINITI FX35 2008 Service Manual

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)
System DescriptionINFOID:0000000001328870
 IPDM E/R (Intelligent Power Distribution Module Engi ne Room) integrates the relay box and fuse block
which were originally placed in engine compartment. It c ontrols 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, and hood switch signal reception, etc.
 It controls operation of each electrical pa rt via ECM, BCM and CAN communication lines.
CAUTION:
None of the IPDM E/R-integr ated relays can be removed.
SYSTEMS CONTROLLED BY IPDM E/R
IPDM E/R receives a request signal fr om each control unit with CAN communication. It controls each system.
CAN COMMUNICATION LINE CONTROL
With CAN communication, by connecting each control uni t using two communication lines (CAN-L line, CAN-H
line), it is possible to transmit maximum amount of in formation with minimum wiring. Each control unit can
transmit and receive data, and reads necessary information only.
Fail- Safe Control
 When CAN communication with other control units is impos sible, 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:
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.
Control system Transmit control unit Control part
Lamp control BCM  Headlamps (HI, LO)
 Front fog lamps
 Parking, license plate, side marker and tail lamps
Wiper control BCM Front wipers
Rear window defogger control BCM Rear window defogger
A/C compressor control ECM A/C compressor (magnet clutch)
Cooling fan control ECM Cooling fan
Horn control BCM Horn
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.
Parking, license plate side marker, and
tail lamps  With the ignition switch ON, the parking, license plate, side marker and tail lamps is ON.
 With the ignition switch OFF, the parking, license plate, side marker and tail 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 wiper Until 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
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PG-18
< SERVICE INFORMATION >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
 All systems controlled by IPDM E/R are stopped. When 3 seconds have elapsed after CAN communica-
tion with other control units is st opped, 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 communication
status.
CAN Communication System DescriptionINFOID:0000000001328871
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/recei ves data but selectively reads required data only.
CAN Communication UnitINFOID:0000000001328872
Refer to LAN-43, "CAN System Specification Chart".
Function of Detecting I gnition Relay MalfunctionINFOID:0000000001328873
 When contact point of integrated ignition relay is st uck and cannot be turned OFF, IPDM E/R turns ON park-
ing, license plate, side marker and tail lamps for 10 minutes to indicate ignition relay malfunction.
 When a state of ignition relay having built-in does not agr ee 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.
CONSULT-III Function (IPDM E/R)INFOID:0000000001328874
CONSULT-III can display each diagnostic item using the diagnostic test mode shown following.
Self Diagnostic Result
Display Item List
Ignition switch signal Ignition relay status Tail lamp relay
ON ON —
OFF OFF — ON OFF —
OFF ON ON (10 minutes)
Inspection Item, Diagnosis Mode Description
Self Diagnostic Result The IPDM E/R performs diagnosis of the CAN communication and self-diagnosis.
Data Monitor The input/output data of the IPDM E/R is displayed in real time.
CAN Diag Support Monitor The result of transmit/receive diagnosis of CAN communication can be read.
Active test The IPDM E/R sends a drive signal to electronic components to check their operation.
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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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NOTE: The details for display of the period are as follows:
 CRNT: Error currently de tected with IPDM E/R.
 PAST: Error detected in the past and memorized with IPDM E/R.
DATA MONITOR
NOTE:
 Perform monitoring of IPDM E/R data with the ignition switch ON. When the ignition switch is at ACC, the display may not be co rrect.
 *1: The vehicle without the Intelligent Key system displays only ON without change.
 *2:The cornering lamp item is displayed, but it cannot be monitored.
ACTIVE TEST
DTC Display Items Malfunction detecting condition TIME
Possible causes
CRNT PAST
— NO DTC IS DETECT-
ED.FURTHER TEST-
ING MAY BE
REQUIRED. ————
U1000 CAN COMM CIRCUIT  If CAN communication reception/transmission
data has a malfunction, or if any of the control
units malfunction, data reception/transmission
cannot be confirmed.
 When the data in CAN communication is not re- ceived before the specified time ××
Any of or several items
below have errors.
 TRANSMIT DIAG
ECM
 BCM/SEC
Item name
CONSULT-III screen dis-
play Display or unit MAIN SIG-
NALS Description
Motor fan request MOTOR FAN REQ 1/2/3/4 ×Signal status input from ECM
Compressor request A C COMP REQ On/Off ×Signal status input from ECM
Tail & clear request TAIL&CLR REQ On/Off ×Signal status input from BCM
H/L LO request HL LO REQ On/Off ×Signal status input from BCM
H/L HI request HL HI REQ On/Off ×Signal status input from BCM
FR fog request FR FOG REQ On/Off ×Signal status input from BCM
FR wiper request FR WIP REQ Stop/1LOW/Lo/Hi ×Signal status input from BCM
Wiper auto stop WIP AUTO STOP ACT P/STOP P ×Output status of IPDM E/R
Wiper protection WIP PROT Off/BLOCK ×Control status of IPDM E/R
Starter request ST RLY REQ
*1On/Off Status of input signal
Ignition relay status IGN RLY On/Off ×Ignition relay status monitored with
IPDM E/R
Rear window defogger re-
quest RR DEF REQ On/Off
×Signal status input from BCM
Oil pressure switch OIL P SW Open/Close Signal status input in IPDM E/R
Hood switch HOOD SW On/Off Input signal status
Theft warning horn re-
quest THFT HRN REQ On/Off Signal st
atus input from BCM
Horn chirp HORN CHIRP On/Off Ou tput status of IPDM E/R
Cornering lamp request CRNRNG LMP REQ
*2Off Signal status input from BCM
Test item CONSULT-III screen display Description
Tail lamp operation TAIL LAMP With a certain On-Off operation, the tail lamp relay can be operated.
Rear window defogger opera-
tion REAR DEFOGGER
With a certain On-Off operation, the rear window defogger relay can be
operated.
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PG-20
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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
NOTE:
This item is displayed, but cannot be tested.
Auto Active TestINFOID:0000000001328875
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 wipers
 Parking, license plate, side marker and tail lamps
 Front fog lamps
 Headlamps (Hi, Lo)
 A/C compressor (magnetic clutch)
 Cooling fan
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, pre ss drivers 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 chir ps 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:
Be sure to inspect BL-38, "
Check Door Switch" when the auto active t est cannot be performed.
INSPECTION IN AUTO ACTIVE TEST MODE
When auto active test mode is actuated, the following eight steps are repeated three times.
Front wiper (HI, LO) operation FRONT WIPER With a certain operation (Off, Hi, Lo),
the front wiper relay (Lo, Hi) can
be operated.
Cooling fan operation MOTOR FAN With a certain operation (1, 2, 3, 4), the cooling fan can be operated.
Lamp (HI, LO, FOG) opera-
tion LAMPSWith a certain operation (Off, Hi, Lo, Fog), the lamp relay (Lo, Hi, Fog)
can be operated.
Cornering lamp operation CORNERING LAMP
NOTE—
Horn operation HORN With a certain On-Off operation, the horn relay can be operated. Test item CONSULT-III screen display Description
PKIB6583E
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PG-24
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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link blown, be sure to e liminate cause of malfunction before installing new one.
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector.
3. Check voltage between IPDM E/R harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK GROUND CIRCUIT
1. Disconnect IPDM E/R harness connectors.
2. Check continuity between IPDM E/R harness connectors and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
U1000 CAN COMM CIRCUITINFOID:0000000001366489
1.PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result” of IPDM E/R.
Is
“CAN COMM CIRCUIT” displayed?
YES >> Refer to LAN-43, "CAN System Specification Chart".
NO >> Refer to GI-25, "
How to Perform Efficient Diagnosis for an Electrical Incident".
Removal and Installation of IPDM E/RINFOID:0000000001328880
REMOVAL
1. Remove battery. Refer to SC-6, "Removal and Installation".
Terminal No. Power source Fuse and fusible link No.
1
Battery power E
2 C
— 71
78
Te r m i n a l s
Voltage (Ap-
prox.)
(+) (-)
IPDM E/R connector Terminal Ground
E3 1
Battery voltage
2
PKIB6562E
IPDM E/R connector Terminal
GroundContinuity
E8 38
E9 50
Ye s
60
SKIA6184E
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PG-62
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HARNESS
H/AIM LT Headlamp Aiming Control System
H/LAMP LT Headlamp
H/PHON AV Hands Free Telephone
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
LDW DI Lane Departure Warning System
M/ANT AV Manual Antenna
MAFS EC Mass Air Flow Sensor
MAIN AT Main Power Supply and Ground Circuit
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 Connector
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
O2H2B1 EC Heated Oxygen Sensor 2 Heater Bank 1
O2H2B2 EC Heated Oxygen Sensor 2 Heater 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
PHASE EC Camshaft Position Sensor (PHASE) Code Section Wiri
ng Diagram Name
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PS-2
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PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001612911
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty 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 w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SUPPLEMENTAL RESTRAINT SYS-
TEM” and “SEAT BELTS” of this Service Manual.
WARNING:
• To avoid rendering the SRS inopera tive, 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 performed by
an authorized NISS AN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the “SUPPLEMEN TAL RESTRAINT SYSTEM”.
 Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000001612914
NOTE:
 This Procedure is applied only to models with In telligent 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 pow er 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.
Precaution for Steering SystemINFOID:0000000001327705
 In case of removing steering gear assembly, make the final tightening with grounded and unloaded vehicle
condition, and then check wheel alignment.
 Observe the following precautions when disassembling.
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RF-10
< SERVICE INFORMATION >
SUNROOF
SUNROOF
Component Parts and Harness Connector LocationINFOID:0000000001328033
System DescriptionINFOID:0000000001328034
Power supplied at all time
 through 50A fusible link (letter M, located in the fuse and fusible link box)
 to BCM terminal 55.
 through 15A fuse [No.22, located in the fuse block (J/B)]
 to BCM terminal 42.
 through BCM terminal 54
 to sunroof motor assembly terminal 7.
When ignition switch ON or START position,
Power is supplied
 through 15A fuse [No.1, located in the fuse block (J/B)]
 to BCM terminal 38.
 through BCM terminal 53
 to sunroof motor assembly terminal 9.
Ground is supplied
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SUNROOFRF-11
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 to BCM terminal 49 and 52
 through body grounds M35, M45, M85 and R6.
TILT UP / SLIDE CLOSE OPERATION
When tilt up / slide close switch is pressed,
Ground is supplied
 to sunroof motor assembly terminal 1
 through sunroof switch terminal 3
 through sunroof switch terminal 2
 through body grounds M35, M45, M85 and R6.
Then, the sunroof tilt up / slide close.
TILT DOWN / SLIDE OPEN OPERATION
When tilt down / slide open switch is pressed,
Ground is supplied
 to sunroof motor assembly terminal 5
 through sunroof switch terminal 1
 through sunroof switch terminal 2
 through body grounds M35, M45, M85 and R6.
Then, the sunroof tilt down / slide open.
AUTO OPERATION
The power sunroof AUTO feature makes it possible to slide open and slide close or tilt up and tilt down the
sunroof without holding the sunroof switch in the down or up / tilt up or tilt down position.
RETAINED POWER OPERATION
When the ignition switch is turned to OFF position fr om ON position, power is supplied for 45 seconds.
 through BCM terminal 53.
 to sunroof motor assembly terminal 9.
When power is supplied, the sunroof can be operated.
The retained power operation is canceled when the driver or passenger side door is opened.
RAP signal period can be changed by CONSULT-III. Refer to RF-15, "
CONSULT-III Function (BCM)".
ANTI-PINCH FUNCTION
The CPU of sunroof motor monitors the sunroof motor operation and the sunroof position (fully-closed or
other) by the signals from sunroof motor.
When sunroof motor detects an interruption during the following slide close and tilt down operation, sunroof
switch controls the motor for open and the sunroof will operate until full up position (when tilt down operate) or
125 mm (4.92 in) or more in an open direction (when slide close operate).
 close operation and tilt down when ignition switch is in the ON position.
 close operation and tilt down during retained power operation.
MEMORY RESET PROCEDURE
1. Please observe the following instructions while confirming the sunroof operation.
NOTE:
Do not disconnect the electronic power while the sunroof is operating or within 5 seconds after the sunroof
stops. (to wipe-out the memory of lid position and operating friction.)
2. Initialization of system should be conducted after the following conditions.
 When the battery is out or connector is disconnected wh ile sunroof is operating or within 5 seconds after
sunroof stops.
 When the sunroof motor is changed.
 When an emergency handle is used.
 When the sunroof does not operate normally. (Incomplete initialization conditions)
INITIALIZATION PROCEDURE
If the sunroof does not close or open automatically, us e the following procedure to return sunroof operation to
normal.
1. Close the sunroof if it is not in the closed positi on. It may be necessary to repeatedly push the switch to
close the sunroof.
2. Press and hold the TILT UP switch. Do not release the switch, keep pressure on it. After 10 seconds of
depressing, the sunroof will tilt up, then stop. Release the button.
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RF-14
< SERVICE INFORMATION >
SUNROOF
Terminal and Reference Value for BCM
INFOID:0000000001328038
Terminal and Reference Valu e for Sunroof Motor AssemblyINFOID:0000000001328039
Te r -
minal Wire
color ItemSignal
Input/
Output Condition
Voltage (V)
(Approx.)
Ignition
switch OPeration or condition
12 P/B Front door switch
(passenger side) signal
Input OFFOPEN (ON) 0
CLOSE (OFF) Battery voltage
38 W/L Ignition switch (ON) Input Ignition switch (ON or START) position Battery voltage
42 L/R Power source (Fuse) Input OFF — Battery voltage
49 B Ground (signal) — ON — 0
52 B Ground (power) — ON — 0
53 Y/B RAP signal Output Ignition switch ON Battery voltage
OFF Within 45 seconds after ignition switch is
turned to OFF position
Battery voltage
When driver side or passenger side door
open in power window timer is operates. 0
54 W Power window power supply Output OFF — Battery voltage
55 G Power source (Fusible link) Input OFF — Battery voltage
62 W Front door switch
(driver side) signal Input OFFOPEN (ON) 0
CLOSE (OFF) Battery voltage
Te r -
minal Wire
color Item Signal
Input/
Output Condition
Voltage (V)
(Approx.)
Ignition
switch Operation or condition
1BR Sunroof switch (Tilt up/
Slide close) signal Input ONIgnition switch ON and sunroof
switch in TILT UP/SLIDE
CLOSE position
0
Other than above Battery voltage
5LG Sunroof switch
(Tilt down/Slide open)
signal
Input ONIgnition switch ON and sunroof
switch in TILT DOWN/SLIDE
OPEN position
0
Other than above Battery voltage
7W Power window power
supply
Input OFF — Battery voltage
8 G Vehicle speed signal Input ON Speedometer operated
[When vehicle speed is approx.
40 km/h (25 MPH)]
9 SB RAP signal Input Ignition switch ON Battery voltage
OFF Within 45 seconds after ignition
switch is turned to OFF position
Battery voltage
When driver side or passenger
side door open in power window
timer is operates. 0
10 B Ground — ON — 0
ELF1080D
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