2006 INFINITI QX56 Factory Service Manual

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Page 2657 of 3383

INFINITI QX56 2006 Factory Service Manual PG-16
POWER SUPPLY ROUTING CIRCUIT
Revision: November 20092006 QX56
WKWA3830E

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INFINITI QX56 2006 Factory Service Manual POWER SUPPLY ROUTING CIRCUITPG-17
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Revision: November 2009 2006 QX56
Fuse EKS00GKH
If fuse is blown, be sure to eliminate cause of incident before
installing new fuse.
Use f

Page 2659 of 3383

INFINITI QX56 2006 Factory Service Manual PG-18
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: November 20092006 QX56
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7
System DescriptionEKS00BN2
I

PG-18
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: November 20092006 QX56
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7
System DescriptionEKS00BN2
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 relays via IPDM E/R control cir-
cuits.
IPDM E/R-integrated control circuits perform ON-OFF operation of relays, CAN communication control,
etc.
It controls operation of each electrical component 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 lines, it receives signals from the BCM and controls the following lamps:
Headlamps (Hi, Lo)
Parking lamps
Tail and license lamps
Front fog lamps
2. Wiper control Using CAN communication lines, it receives signals from the BCM and controls the front wipers.
3. Rear window defogger relay control Using CAN communication lines, it receives signals from the BCM and controls the rear window defogger
relay.
4. A/C compressor control Using CAN communication lines, it receives signals from the ECM and controls the A/C compressor
(magnetic clutch).
5. Starter control Using CAN communication lines, it receives signals from the BCM and controls the starter relay.
6. Cooling fan control Using CAN communication lines, it receives signals from the ECM and controls the cooling fan relays.
7. Horn control Using CAN communication lines, it receives signals from the BCM and controls the 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 a 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 returns to normal operation, 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 are ON.
With the ignition switch OFF, the tail and parking lamps are 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

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INFINITI QX56 2006 Factory Service Manual IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)PG-19
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Revision: November 2009 2006 QX56
IPDM E/R STATUS CONTROL
In order to save power, IPDM E/R switches status a

Page 2661 of 3383

INFINITI QX56 2006 Factory Service Manual PG-20
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: November 20092006 QX56
CONSULT-II Function IPDM E/REKS00BN5
CONSULT-II can display each diagnostic item using the diagnosti

Page 2662 of 3383

INFINITI QX56 2006 Factory Service Manual IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)PG-21
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Revision: November 2009 2006 QX56
4. Select the desired part to be diagnosed on the "SELECT DIAG
MODE" scree

Page 2663 of 3383

INFINITI QX56 2006 Factory Service Manual PG-22
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: November 20092006 QX56
5. Touch “RECORD” while monitoring to record the status of the item being monitored. To stop rec

Page 2664 of 3383

INFINITI QX56 2006 Factory Service Manual IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)PG-23
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Revision: November 2009 2006 QX56
All Signals, Main Signals, Selection From Menu
NOTE:
Perform monitoring o

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)PG-23
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Revision: November 2009 2006 QX56
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 in ACC posi-
tion, display may not be correct.
(*1) This item is displayed, but does not function.
ACTIVE TEST
Operation Procedure
1. Touch “ACTIVE TEST” on “SELECT DIAG-MODE ” screen.
2. Touch item to be tested, and check operation.
3. Touch “START”.
4. Touch "STOP" while testing to stop the operation.
Item name CONSULT-II
screen display Display or unit Monitor item selection
Description
ALL
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
Motor fan request MOTOR FAN
REQ
1/2/3/4
X X X Signal status input from ECM
Compressor
request AC COMP REQ ON/OFF
X XX Signal status input from ECM
Parking, license,
and tail lamp
request TAIL & CLR REQ ON/OFF
X XX Signal status input from BCM
Headlamp low
beam request HL LO REQ ON/OFF
X XX Signal status input from BCM
Headlamp high
beam request HL HI REQ ON/OFF
X XX Signal status input from BCM
Front fog request FR FOG REQ ON/OFF X XX Signal status input from BCM
Front wiper
request FR WIP REQSTOP/1LOW/
LOW/HI
X X
X Signal status input from BCM
Wiper auto stop WIP AUTO
STOPACT P/STOP P X X
X Output status of IPDM E/R
Wiper protection WIP PROT OFF/Block X XX Control status of IPDM E/R
Starter request ST RLY REQ ON/OFF XX
Status of input signal
NOTE
Ignition relay
status IGN RLY ON/OFF
X XXIgnition relay status monitored
with IPDM E/R
Rear defogger
request RR DEF REQ ON/OFF
X XX Signal status input from BCM
Oil pressure
switch OIL P SW (*1) OPEN/CLOSE X
XSignal status input from IPDM
E/R
Hood switch HOOD SW OFF XSignal status input from IPDM
E/R
Theft warning
horn request THFT HRN REQ ON/OFF
XX Signal status input from BCM
Horn chirp HORN CHIRP ON/OFF XX Output status of IPDM E/R
Daytime running
lamp request DTRL REQ ON/OFF
XX Signal status input from BCM
Test nameCONSULT-II screen display Description
Rear defogger output REAR DEFOGGER With a certain ON-OFF operation, the rear defogger relay can be oper-
ated.
Front wiper (HI, LO) output FRONT WIPER With a certain operation (OFF, HI ON, LO ON), the front wiper relay
(Lo, Hi) can be operated.
Cooling fan output MOTOR FAN With a certain operation (1, 2, 3, 4), the cooling fan can be operated.

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