2011 INFINITI QX56 Back door

DIAGNOSIS SYSTEM (BCM)EXL-25
< SYSTEM DESCRIPTION > [XENON TYPE]
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ACTIVE TEST
*: Only models for Canada display this item.
FLASHER
FLASHER : CONSULT-III F unction (BCM - FLASHER)INFOID:0000000006213912
WORK SUPPORT
DOOR SW-DR
[On/Off] The switch status input from front door switch (driver side)
DOOR SW-AS
[On/Off] The switch status input from front door switch (passenger side)
DOOR SW-RR
[On/Off] The switch status input from rear door switch RH
DOOR SW- RL
[On/Off] The switch status input from rear door switch LH
DOOR SW-BK
[On/Off] The switch status input from back door switch
OPTICAL SENSOR
[On/Off] The sensor status input from optical sensor
OPTI SEN (DTCT)
[V] The value of outside brightness voltage input from the optical sensor
OPTI SEN (FILT)
[V] The value of outside brightness voltage filtered by BCM
Monitor item
[Unit] Description
Test item Operation Description
TAIL LAMP On
Transmits the position light request signal to IPDM E/R via CAN commu-
nication to turn the tail lamp ON
Off Stops the tail lamp request signal transmission
HEAD LAMP Hi
Transmits the high beam request signal via CAN communication to turn
the headlamp (HI)
Lo Transmits the low beam request signal via CAN communication to turn
the headlamp (LO)
Off Stops the high & low beam request signal transmission
FR FOG LAMP On
Transmits the front fog lights request signal to IPDM E/R via CAN com-
munication to turn the front fog lamp ON
Off Stops the front light request signal transmission
RR FOG LAMP On
NOTE:
This item is indicated, but can not tested
Off
DAYTIME RUNNING LIGHT* On
Transmits the front fog lights request signal to IPDM E/R via CAN com-
munication to turn the front fog lamp ON (daytime running light system)
Off Stops the front light request signal transmission (daytime running light
system)
ILL DIM SIGNAL On Transmits the dimmer signal to combination meter via CAN communi-
cation and dims combination meter
 Transmits the dimmer signal to AV control unit and dims display
Off Stops the dimmer signal transmission
Revision: 2010 May2011 QX56

EXL-26
< SYSTEM DESCRIPTION >[XENON TYPE]
DIAGNOSIS SYSTEM (BCM)
*: Factory setting
DATA MONITOR
ACTIVE TEST
Service item Setting item Setting
HAZARD ANSWER
BACK Lock Only With locking only
Sets the hazard warning lamp answer back function
when the door is lock/unlock with the request switch or
the key fob.
Unlk Only With unlocking only
Lock&Unlk
*With locking/unlocking
Off Without the function
Monitor item [Unit] Description
REQ SW-DR
[On/Off] The switch status input from the request switch (driver side)
REQ SW-AS
[On/Off] The switch status input from the request switch (passenger side)
PUSH SW
[On/Off] The switch status input from the push-button ignition switch
TURN SIGNAL R
[On/Off] Each switch status that BCM detects from the combination switch reading function
TURN SIGNAL L
[On/Off]
HAZARD SW
[On/Off] The switch status input from the hazard switch
RKE-LOCK
[On/Off] Lock signal status received from the remote keyless entry receiver
RKE-UNLOCK
[On/Off] Unlock signal status received from the remote keyless entry receiver
RKE-PANIC
[On/Off] Panic alarm signal status received from the remote keyless entry receiver
Test item Operation Description
FLASHER RH Outputs the voltage to blink the right side turn signal lamps.
LH Outputs the voltage to blink the left side turn signal lamps.
Off Stops the voltage to turn the turn signal lamps OFF.
Revision: 2010 May2011 QX56

EXTERIOR LAMP FUSEEXL-85
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
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EXTERIOR LAMP FUSE
Diagnosis ProcedureINFOID:0000000006213954
1.CHECK FUSE
Check that the following fuses are not fusing.
Is the inspection result normal?
YES >> The fuse is normal.
NO >> Repair the applicable circuit. And then replace the fuse.
Unit Location Fuse No. Capacity
Headlamp HI (LH) IPDM E/R #52 10 A
Headlamp HI (RH) IPDM E/R #51 10 A
Headlamp LO (LH) IPDM E/R #53 15 A
Headlamp LO (RH) IPDM E/R #54 15 A
Front fog lamp IPDM E/R #50 15 A
Parking lamp (LH)
 Front side marker lamp (LH) IPDM E/R #46 10 A
 Parking lamp (RH)
 Front side marker lamp (RH) IPDM E/R #47 10 A
 Tail lamp (Back door side LH/RH)
 Tail lamp (Body side LH)
 License plate lamp
 Rear side mark er lamp (LH) IPDM E/R #46 10 A
 Tail lamp (Body side RH)
 Rear side mark er lamp (RH) IPDM E/R #47 10 A
Stop lamp FUSE BLOCK (J/B) #7 10 A
Back-up lamp IPDM E/R #55 10 A
Revision: 2010 May2011 QX56

EXL-110
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
TAIL LAMP CIRCUIT
- Tail lamp (back door side)
- License plate lamp
3. Check continuity between IPDM E/R harness connec
tor and rear combination lamp harness connector.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace harness.
4.CHECK TAIL LAMP SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the following connectors.
- IPDM E/R
- Front combination lamp
- Rear combination lamp
- Tail lamp (back door side)
- License plate lamp
3. Check continuity between IP DM E/R harness connector and ground.
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> Repair or replace harness.
5.CHECK TAIL LAMP GROUND OPEN CIRCUIT
Check continuity between rear combination lamp harness connector and ground.
Is the inspection result normal?
YES >> Replace rear combination lamp.
NO >> Repair or replace harness.
BACK DOOR SIDE
BACK DOOR SIDE : Co mponent Function CheckINFOID:0000000006238402
1.CHECK TAIL LAMP (BODY SIDE) OPERATION
Check that the tail lamp (body side) is turned ON.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Refer to EXL-109, "
BODY SIDE : Component Function Check".
2.CHECK TAIL LAMP (BACK DOOR SIDE) OPERATION
CONSULT-III ACTIVE TEST
1. Select “EXTERNAL LAMPS” of IPDM E/R active test item.
2. With operating the lighting switch, check that the tail lamp (back door side) is turned ON.
IPDM E/R Rear combination lamp
Continuity
Connector Terminal Connector Terminal
RH E1438 B232
1 Existed
LH 44 B60
IPDM E/R
GroundContinuity
Connector Terminal
RH E1438
Not existed
LH 44
Rear combination lamp
GroundContinuity
Connector Terminal
RH B232 4 Existed
LH B60
Revision: 2010 May2011 QX56

TAIL LAMP CIRCUITEXL-111
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
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Is the inspection result normal?
YES >> Tail lamp (back door side) circuit is normal.
NO >> Refer to E X L - 111 , "
BACK DOOR SIDE : Diagnosis Procedure".
BACK DOOR SIDE : Diagnosis ProcedureINFOID:0000000006238403
1.CHECK TAIL LAMP (BACK DOOR SIDE) BULB
Check the applicable lamp bulb.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace bulb.
2.CHECK TAIL LAMP (BACK DOOR SIDE) OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and tail lamp (back door side) connector.
3. Check continuity between IPDM E/R harness connec tor and tail lamp (back door side) harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness.
3.CHECK TAIL LAMP (BACK DOOR SIDE) GROUND OPEN CIRCUIT
Check continuity between tail lamp (back door side) harness connector and ground.
Is the inspection result normal?
YES >> Check corresponding bulb socket and harness. Repair or replace if necessary.
NO >> Repair or replace harness. TAIL : Tail lamp (back door side) ON
Off : Tail lamp (back door side) OFF
IPDM E/R Tail lamp (back door side)
Continuity
Connector Terminal Connector Terminal
LH E14 44 D169
1 Existed
RH D117
Tail lamp (back door side)
GroundContinuity
Connector Terminal
LH D169 2Existed
RH D117
Revision: 2010 May2011 QX56

EXL-114
< SYMPTOM DIAGNOSIS >[XENON TYPE]
EXTERIOR LIGHTING SYSTEM SYMPTOMS
Each lamp is not turned ON/OFF with lighting switch
AUTO. Combination switch
 Harness between combination
switch and BCM
BCM Combination switch
Refer to
BCS-80, "
Symptom Table".
 Optical sensor
 Harness between optical sen- sor and BCM
BCM Optical sensor
Refer to
EXL-102, "
Component
Function Check".
Front fog lamp is not
turned ON. One side
 Front fog lamp bulb
 Harness between IPDM E/R
and front fog lamp
 Front fog lamp
 IPDM E/R Front fog lamp circuit
Refer to
EXL-94, "
Component
Function Check".
Both sides Symptom diagnosis
“BOTH SIDE FRONT FOG LAMPS ARE NOT TURNED ON”
Refer to
EXL-120, "
Diagnosis Procedure".
Parking lamp is not turned ON.  Parking lamp bulb
 Harness between IPDM E/R
and front combination lamp
 Front combination lamp
 IPDM E/R Parking lamp
circuit
Refer to EXL-96, "
Component
Function Check".
Front side marker lamp is not turned ON.  Front side marker lamp bulb
 Harness between IPDM E/R
and front combination lamp
 Front combination lamp
 IPDM E/R Front side marker lamp circuit
Refer to
EXL-98, "
Component
Function Check".
Tail lamp or rear side
marker lamp is not turned
ON. Body side
 Harness between IPDM E/R
and rear combination lamp
 Rear combination lamp Tail lamp circuit (body side)
Refer to
EXL-109, "
BODY SIDE :
Component Function Check".
Back door side  Harness between IPDM E/R
and tail lamp (back door side)
 Tail lamp (back door side) Tail lamp circuit (back door side)
Refer to
EXL-110, "
BACK DOOR
SIDE : Component Function
Check".
License plate lamp is not turned ON.  License plate lamp bulb
 Harness between IPDM E/R
and license plate lamp
 License plate lamp License plate lamp circuit
Refer to
EXL-112, "
Component
Function Check".
Tail lamp, rear side marker lamp and license plate
lamp are not turned ON. Fuse
 Harness between IPDM E/R
and rear combination lamp (LH)
 IPDM E/R Tail lamp circuit (body side)
Refer to
EXL-109, "
BODY SIDE :
Component Function Check".
 Parking lamp, side marker lamp, tail lamp and li- cense plate lamp are not turned ON.
 Parking lamp, side marker lamp, tail lamp and li- cense plate lamp are not turned OFF.
(Each illumination is turned ON/OFF.) Symptom diagnosis
“PARKING, LICENSE PLATE, SIDE MARKER LAMP AND TAIL LAMPS
ARE NOT TURNED ON”
Refer to
EXL-119, "
Diagnosis Procedure".
Tail lamp indicator is not turned ON.
(Parking, side marker lamp and tail lamps are turned
ON.) Combination meter Combination meter
Data monitor “LIGHT IND”
 BCM (HEAD LAMP) Active test “TAIL LAMP”
Turn signal lamp does not
blink. Indicator lamp is nor-
mal.
(Applicable side per-
forms the high flasher
activation.)
 Harness between BCM and
each turn signal lamp
 Turn signal lamp bulb Turn signal lamp circuit
Refer to
EXL-99, "
Component
Function Check".
Indicator lamp is includ-
ed.  Combination switch
 Harness between combination
switch and BCM
BCM Combination switch
Refer to
BCS-80, "
Symptom Table".
Symptom Possible cause Inspection item
Revision: 2010 May2011 QX56

LICENSE PLATE LAMPEXL-143
< REMOVAL AND INSTALLATION > [XENON TYPE]
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LICENSE PLATE LAMP
Exploded ViewINFOID:0000000006369489
Removal and InstallationINFOID:0000000006369490
CAUTION:
Disconnect the battery negative terminal or remove the fuse.
REMOVAL
1. Remove back door trim. Refer to INT-39, "Removal and Installation".
2. Disconnect license plate lamp connector.
3. Remove back door finisher center upper.
4. Remove license plate lamp while pushing a resin clip, and then remove license plate lamp.
INSTALLATION
Install in the reverse order of removal.
ReplacementINFOID:0000000006369491
CAUTION:
 Disconnect the battery negative terminal or remove the fuse.
 Never touch the glass of bulb directly by hand. Keep grease and other oily matters away from it.
Never touch bulb by hand while it is lit or right after being turned off.
 Never leave bulb out of lamp reflector for a long time because dust, moisture smoke, etc. may affect
the performance of lamp. When replacing bu lb, be sure to replace it with new one.
LICENSE PLATE LAMP BULB
1. Remove back door trim. Refer to INT-39, "Removal and Installation".
2. Disconnect license plate lamp connector.
1. License plate lamp harness 2. License plate lamp bulb socket 3. License plate lamp bulb
4. License plate lamp 5. Back door finisher center upper
JMLIA1122ZZ
Revision: 2010 May2011 QX56

EXT-2
FRONT PILLAR FINISHER ...............................40
Exploded View ..................................................... ...40
Removal and Installation ........................................40
REAR SPOILER ................................................41
Exploded View ..................................................... ...41
Removal and Installation ........................................41
DRIP MOLDING .................................................43
Exploded View ..................................................... ...43
Removal and Installation ...................................... ...43
BACK DOOR FINISHER ...................................44
Exploded View ..................................................... ...44
Removal and Installation .........................................44
SIDE STEP ........................................................45
Exploded View ..................................................... ...45
Removal and Installation .........................................45
Revision: 2010 May2011 QX56