2011 INFINITI QX56 window

INT-16
< REMOVAL AND INSTALLATION >
REAR DOOR FINISHER
REAR DOOR FINISHER
Exploded ViewINFOID:0000000006220243
Removal and InstallationINFOID:0000000006220244
CAUTION:
 When removing, always use a remover tool that is made of plastic.
 Never damage the body.
1. Rear door finisher 2. Bumper rubber 3. Door finisher cap
4. Inside handle escutcheon 5. Rear door grip cap 6. Step lamp
7. Power window switch finisher 8. Power window switch 9. Tweeter grille
10. Rear door garnish 11. Rear door tweeter 12. Rear door panel
13. Rear door inside handle 14. Rear door inside seal: Clip
: Pawl
JMJIA4423ZZ
Revision: 2010 May2011 QX56

REAR DOOR FINISHERINT-17
< REMOVAL AND INSTALLATION >
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REMOVAL
1. Fully open door window.
2. Remove door finisher cap (1) using a small flat-bladed screw- driver (A) as shown by the arrow in the figure, and then remove
rear door finisher mounting bolt.
CAUTION:
Use a small flat-bladed screwdriver wrapped in tape (B).
3. Insert a remover tool (A) between rear door grip cap (1) and rear door grip to disengage rear door grip cap fixing pawls as shown
by the arrow in the figure, and then remove fixing screws.
4. Remove step lamp, and then disconnect step lamp harness connector. Refer to INL-74, "
Removal and
Installation".
5. Remove bumper rubber.
6. Insert a remover tool (A) between rear door finisher and rear door panel to disengage the clips as shown by the arrow in the
figure.
CAUTION:
Insert a remover tool into the part shown in the figure
(between the clips and the door panel).
7. Disconnect mood lamp harness connector.
8. Disconnect power window switch harness connector and clamp.
9. Disconnect lock knob cable and inside handle cable from rear inside handle.
10. Remove rear door finisher from rear door panel.
11. Remove the following parts after removing rear door finisher.  Mood lamp.
 Power window switch. Refer to PWC-74, "
Removal and Installation".
 Rear door inside handle. Refer to DLK-244, "
INSIDE HANDLE : Removal and Installation".
 Rear door tweeter. Refer to AV-218, "
Removal and Installation".
INSTALLATION
Note the following items, and install in the reverse order of removal.
CAUTION:
 Visualy check the clips and pawls for deformation and damage during installation. Replace with new
ones if necessary.
 When installing rear door finish er, check that clips and pawls are secu rely fitted in body panel holes,
and press them in.
: Pawl
JMJIA4013ZZ
: Pawl
JMJIA4016ZZ
: Clip
JMJIA4017ZZ
Revision: 2010 May2011 QX56

LAN-30
< SYSTEM DESCRIPTION >[CAN]
SYSTEM
P range signal T R R
R range signal T R R
Shift position signal R R T R R R R R
Tow mode indicator lamp
signalTR
Pre-roll over signal T R
Pre-tensioner operation
signal TR
AFS OFF indicator lamp
signal TR
A/C switch operation signal T R
Rear window defogger
switch signal TR
System selection signal T R
System setting signal TR R
RT
RT
Automatic back door re-
quest signal TR
Back door lock status signal T R
Buzzer output signal TR
RT
Buzzer request signal TR
RT
Dimmer signal T R R
Door switch signal T R R R R
Door unlock signal T R
Front fog light request sig-
nal TR
Front wiper request signal T R R
Handle position signal T R
Headlamp washer request
signal TR
High beam request signal T R R
Horn reminder signal T R
Ignition switch ON signal TRRR
RT
Ignition switch signal T R
Interlock/PNP switch signal TR
RT
Key ID signal T R
Key switch signal T R
Key warning lamp signal T R
Low beam request signal T R Signal name
ECM
4WD
ABS
TCM
A-BAG
AFSAV
BCM
CGW
HVAC
M&A
STRG
TPMS
IPDM-E ADP
PSB
E-SUS ICC
PWBD
Revision: 2010 May2011 QX56

LAN
SYSTEMLAN-31
< SYSTEM DESCRIPTION > [CAN]
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Meter display signal
TR
RT
Oil pressure switch signal TR
RT
Position light request signal T R R
Rear fog light status signal T R
Rear window defogger con-
trol signal TR
RT
Sleep wake up signal T R R R R R R
Starter control relay signal T R
Starter relay status signal TRR
RT
Starting mode signal T R
Steering lock relay signal TRR
RT
Theft warning horn request
signal TR
Turn indicator signal R T R R
A/C display signal R T
A/C ON signal R T
Ambient temperature signal T R
Blower fan ON signal R T
Distance to empty signal R T
Fuel level low warning sig-
nal RT
Fuel level sensor signal R T
Manual mode shift down
signal RT
Manual mode shift up sig-
nal RT
Manual mode signal R T
Non-manual mode signal R T
Odometer signal R T
Parking brake switch signal R R T R R
Sleep-ready signal RT
RT
RT
Tow mode switch signal R T
Wake up signal RT
RT
Steering angle sensor mal-
function signal RR T R R
Steering angle sensor sig-
nal RR RR T R R
Steering angle speed signal R T R R Signal name
ECM
4WD
ABS
TCM
A-BAG AFS
AV
BCM
CGW
HVAC M&A
STRG
TPMS
IPDM-E
ADPPSB
E-SUS ICC
PWBD
Revision: 2010 May2011 QX56

PCS-6
< SYSTEM DESCRIPTION >[IPDM E/R]
SYSTEM
NOTE:
BCM controls the starter relay.
RELAY CONTROL SYSTEM : Fail-SafeINFOID:0000000006220163
CAN COMMUNICATION CONTROL
When CAN communication with ECM and BCM is impossible,
IPDM E/R performs fail-safe control. After CAN
communication recovers normally, it also returns to normal control.
If No CAN Communication Is Available With ECM
If No CAN Communication Is Available With BCM
Control relay Input/output Transmi t unit Control part Reference page
 Headlamp low relay
 Headlamp high relay  Low beam request signal
 High beam request signal
BCM (CAN)
 Headlamp (LO)
 Headlamp (HI) EXL-10
Front fog lamp relay Front fog light request signal BCM (CAN) Front fog lamp
EXL-20
Tail lamp relay Position light request signal BCM (CAN) Parking lamp
 License plate
lamp
Tail lamp
 Side marker lamp EXL-18
Illuminations
INL-6
 Front wiper relay
 Front wiper high relayFront wiper request signal BCM (CAN)
Front wiper motorWW-7Front wiper stop position sig-
nal Front wiper motor
Rear window defogger
relay Rear window defogger control
signal
BCM (CAN)
Rear window defog-
ger
DEF-6
Horn relay
 Theft warning horn
relay  Theft warning horn request
signal
 Horn reminder signal BCM (CAN)
Horn (high)
Horn (low) SEC-17
 Starter relayNOTE
 Starter control relayStarter control rela
y signal BCM (CAN)
Starter motorSEC-10
,
SEC-10Steering lock unit condition
signal Steering lock unit
Starter relay control signal TCM
Steering lock relay Steering lock relay signal BCM (CAN)
Steering lock unitSEC-10
Steering lock unit condition
signal Steering lock unit
A/T shift selector (detention
switch) signal A/T shift selector
(detention switch)
A/C relay A/C compressor request sig-
nal ECM (CAN)
A/C compressor
(Magnet clutch) HAC-17
Headlamp washer relay
Headlamp washer request
signal BCM (CAN)Headlamp washer
pump WW-13
 Ignition relay
 Ignition relay-2
 Ignition relay-3Ignition switch ON signal BCM (CAN)
Each control unit,
sensor, actuator and
relay (ignition power
supply)PCS-29Vehicle speed signal
Combination meter
(CAN)
Push-button ignition switch
signal Push-button ignition
switch
Control part Fail-safe operation
Cooling fan  Transmits the pulse duty signal (PWM signal) 100% when the ignition switch is turned ON.
 Transmits the pulse duty signal (PWM signal) 0% when the ignition switch is turned OFF.
A/C compressor A/C relay OFF
Alternator Transmits the power generation command signal (PWM signal) 0%
Revision: 2010 May2011 QX56

PCS-8
< SYSTEM DESCRIPTION >[IPDM E/R]
SYSTEM
POWER CONTROL SYSTEM : System Diagram
INFOID:0000000006220164
POWER CONTROL SYSTEM : System DescriptionINFOID:0000000006220165
COOLING FAN CONTROL
IPDM E/R outputs cooling fan control signal (PWM signal ) to the electrically-controlled cooling fan coupling
according to the status of the cooling fan speed request signal received from ECM via CAN communication.
Refer to EC-41, "
COOLING FAN CONTROL : System Diagram".
ALTERNATOR CONTROL
IPDM E/R outputs power generation command signal (PWM signal ) to the alternator according to the status of
the power generation command value signal received from ECM via CAN communication. Refer to CHG-7,
"POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM : System Diagram".
SIGNAL BUFFER SYSTEM
SIGNAL BUFFER SYSTEM : System DiagramINFOID:0000000006220166
SIGNAL BUFFER SYSTEM : System DescriptionINFOID:0000000006220167
 IPDM E/R reads the status of the oil pressure switch and transmits the oil pressure switch signal to BCM via
CAN communication. Refer to MWI-15, "
OIL PRESSURE WARNING LAMP : System Diagram".
 IPDM E/R reads the status of the hood switch and tr ansmits the hood switch signal to BCM via CAN commu-
nication. Refer to SEC-17, "
VEHICLE SECURITY SYSTEM : System Diagram".
 IPDM E/R receives the rear window defogger control signal from BCM via CAN communication and trans- mits it to ECM and AV control unit via CAN communication. Refer to DEF-6, "
System Diagram".
POWER CONSUMPTION CONTROL SYSTEM
JMMIA0491GB
JPMIA0952GB
Revision: 2010 May2011 QX56

PCS-10
< SYSTEM DESCRIPTION >[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis DescriptionINFOID:0000000006220170
AUTO ACTIVE TEST
Description
In auto active test, the IPDM E/R sends a drive si
gnal to the following systems to check their operation.
 Oil pressure warning lamp
 Rear window defogger
 Front wiper (LO, HI)
 Parking lamp
 License plate lamp
 Tail lamp
 Side marker lamp
 Front fog lamp
 Headlamp (LO, HI)
 A/C compressor (magnet clutch)
Operation Procedure
CAUTION:
Never perform auto active test in the following conditions.
 Engine is running.
 CONSULT-III is connected.
1. Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper
operation)
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
2. Turn the ignition switch OFF.
3. Turn the ignition switch ON, and within 20 seconds, pr ess the driver door switch 10 times. Then turn the
ignition switch OFF.
CAUTION:
Close passenger door.
4. Turn the ignition switch ON within 10 seconds. Af ter that the horn sounds once and the auto active test
starts.
CAUTION:
Engine starts when igniti on switch is turned ON while brake pedal is depressed.
5. The oil pressure warning lamp starts blinking when the auto active test starts.
6. After a series of the following operations is repeated 3 times, auto active test is completed.
NOTE:
 When auto active test has to be cancelled halfway through test, turn the ignition switch OFF.
 When auto active test is not activated, door swit ch may be the cause. Check door switch. Refer to DLK-117,
"ComponentFunctionCheck".
Inspection in Auto Active Test
When auto active test is actuated, the following operation sequence is repeated 3 times.
Operation
sequence Inspection location Operation
1 Oil pressure warning lamp Blinks continuously during operation of auto active test
2 Rear window defogger 10 seconds
3 Front wiper LO for 5 seconds → HI for 5 seconds
4 Parking lamp
 License plate lamp
 Tail lamp
 Side marker lamp
 Front fog lamp 10 seconds
Revision: 2010 May2011 QX56

PCS
DIAGNOSIS SYSTEM (IPDM E/R)PCS-11
< SYSTEM DESCRIPTION > [IPDM E/R]
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Concept of auto active test
 IPDM E/R starts the auto active test with the door
switch signals transmitted by BCM via CAN communica-
tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto
active test starts successfully.
 The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.
Diagnosis chart in auto active test
5 Headlamp LO for 10 seconds →HI ON ⇔ OFF 5 times
6 A/C compressor (magnet clutch) ON ⇔ OFF 5 times
Operation
sequence Inspection location Operation
JMMIA0492GB
Symptom Inspection contents Possible cause
Rear window defogger does not operate Perform auto active test.
Does the rear window defog-
ger operate?YES BCM signal input circuit
NO  Rear window defogger
 Rear window defogger
ground circuit
 Harness or connector be- tween IPDM E/R and rear
window defogger
 IPDM E/R
Any of the following components do not operate
Parking lamp
 License plate lamp
Tail lamp
 Side marker lamp
 Front fog lamp
 Headlamp (HI, LO)
 Front wiper (HI, LO) Perform auto active test.
Does the applicable system
operate?YES BCM signal input circuit
NO  Lamp or motor
 Lamp or motor ground cir-
cuit
 Harness or connector be- tween IPDM E/R and appli-
cable system
 IPDM E/R
A/C compressor does not operate Perform auto active test.
Does the magnet clutch oper-
ate?YES
 A/C auto amp. signal input
circuit
 CAN communication signal
between A/C auto amp. and
ECM
 CAN communication signal
between ECM and IPDM E/
R
NO  Magnet clutch
 Harness or connector be-
tween IPDM E/R and mag-
net clutch
 IPDM E/R
Revision: 2010 May2011 QX56