2005 INFINITI FX35 Service Manual

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INFINITI FX35 2005 Service Manual PG-16
POWER SUPPLY ROUTING CIRCUIT
Revision: 2005 July 2005 FX
TKWM2525E

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INFINITI FX35 2005 Service Manual POWER SUPPLY ROUTING CIRCUIT PG-17
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Revision: 2005 July 2005 FX
Fuse AKS007VW
If fuse is blown, be sure to eliminate cause of malfunction before
installing new

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INFINITI FX35 2005 Service Manual PG-18
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2005 July 2005 FX
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7
System DescriptionAKS005S9
IPDM E

PG-18
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2005 July 2005 FX
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 compartment. It controls integrated relay via IPDM E/R control cir-
cuit.
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 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, license plate and tail 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 compressor.
5. Cooling fan control Using CAN communication line, it receives signals from ECM and controls cooling fan .
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.
Parking, license plate and tail lamps
With the ignition switch ON, the parking, license plate and tail lamps is ON.
With the ignition switch OFF, the parking, license plate 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 is OFF
A/C compressor A/C compressor is OFF
Front fog lamps Front fog lamp is OFF

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INFINITI FX35 2005 Service Manual IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) PG-19
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Revision: 2005 July 2005 FX
IPDM E/R STATUS CONTROL
In order to save power, IPDM E/R switches

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) PG-19
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Revision: 2005 July 2005 FX
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 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 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-30, "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 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. Ignition switch signal Ignition relay status Tail lamp relay
ON ON —
OFF OFF — ON OFF —
OFF ON ON (10 minutes)

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INFINITI FX35 2005 Service Manual PG-20
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2005 July 2005 FX
CONSULT-II Function (IPDM E/R)AKS005SC
CONSULT-II can display each diagnostic item using the diagnostic t

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INFINITI FX35 2005 Service Manual IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) PG-21
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Revision: 2005 July 2005 FX
4. Select the desired part to be diagnosed on the “SELECT DIAG

Page 4199 of 4731

INFINITI FX35 2005 Service Manual PG-22
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2005 July 2005 FX
DATA MONITOR
Operation Procedure
1. Touch “DATA MONITOR” on “SELECT MONITOR ITEM ” screen.
2. T

PG-22
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2005 July 2005 FX
DATA MONITOR
Operation Procedure
1. Touch “DATA MONITOR” on “SELECT MONITOR ITEM ” screen.
2. Touch “ALL SIGNALS”, “MAIN SIGNALS” or “SELECTION FROM MENU” on the “DATA MONITOR” screen.
3. Touch the required monitoring item on “SELECTION FROM MENU”. In “ALL SIGNALS”, all items are monitored. In “MAIN SIGNALS”, predetermined items are monitored.
4. Touch “START”.
5. Touch “RECORD” while monitoring to record the status of the item being monitored. To stop recording, touch “STOP”.
All Signals, Main Signals, Selection From Menu
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 cor -
rect.
*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
Operation Procedure
1. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
2. Touch item to be tested.
ALL SIGNALS All items will be monitored.
MAIN SIGNALS Monitor the predetermined item.
SELECTION FROM MENU Select any item for monitoring.
Item name CONSULT-II
screen display Display or unit SELECT MONITOR ITEM
Description
ALL
SIGNALS MAIN
SIGNALS SELECTION
FROM
MENU
Motor fan request MOTOR FAN
REQ 1/2/3/4
×× × Signal status input from ECM
Compressor request AC 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/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 defog-
ger request 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
request THFT HRN REQ ON/OFF
××Signal status input from BCM
Horn chirp HORN CHIRP ON/OFF ××Output status of IPDM E/R
Cornering lamp
request CRNRNG LMP
REQ
*2OFF/LEFT/
RIGHT ××
Signal status input from BCM

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INFINITI FX35 2005 Service Manual IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) PG-23
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Revision: 2005 July 2005 FX
3. Touch “START”, and confirm its operation.
4. Touch “ST

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