2006 INFINITI QX56 ignition

INTERIOR ROOM LAMPLT-151
C
DE
F
G H
I
J
L
M A
B
LT
Revision: November 2009 2006 QX56
Display Item List
ACTIVE TEST
Operation Procedure
1. Touch "INT LAMP" on "SELECT TEST ITEM" screen.
2. Touch "ACTIVE TEST" on "SELECT DIAG MODE" screen.
3. Touch item to be tested and check operation of the selected item.
4. During the operation check, touching "BACK" or "OFF" deactivates the operation.
Display Item List
Room/Map Lamp Control Does Not OperateEKS00BBD
1. CHECK EACH SWITCH
Select "BCM" on CONSULT-II. With "INT LAMP" data monitor, make
sure switches listed in display item list turn ON-OFF linked with
switch operation. Refer to LT- 1 5 1 , "
Display Item List" for switches
and their functions.
OK or NG
OK >> GO TO 2.
NG >> Inspect malfunctioning switch system.
Monitor item Contents
IGN ON SW "ON/OFF"Displays "IGN position (ON)/OFF, ACC position (OFF)" judged from the ignition switch sig-
nal.
KEY ON SW "ON/OFF" Displays "Key inserted (ON)/key removed (OFF)" status judged from the key switch signal.
DOOR SW-DR "ON/OFF"Displays status of the front door LH as judged from the front door switch LH signal. (Door is
open: ON/Door is closed: OFF)
DOOR SW-AS "ON/OFF"Displays "Door open (ON)/Door closed (OFF)" status, determined from front door switch RH
signal.
DOOR SW-RR "ON/OFF"Displays "Door open (ON)/Door closed (OFF)" status, determined from rear door switch RH
signal.
DOOR SW-RL "ON/OFF"Displays "Door open (ON)/Door closed (OFF)" status, determined from rear door switch LH
signal.
BACK DOOR SW "ON/OFF" Displays "Door open (ON)/Door closed (OFF)" status, determined from back door latch
(door ajar switch) signal.
KEY CYL LK-SW "ON/OFF" Displays "Door locked (ON)" status, determined from front door lock assembly LH (key cylin-
der switch) in front door LH.
KEY CYL UN-SW "ON/OFF" Displays "Door unlocked (OFF)" status, determined from front door lock assembly LH (key
cylinder switch) in front door LH.
CDL LOCK SW "ON/OFF"Displays "Door locked (ON)/Door unlocked (OFF)" status, determined from locking detection
switch in front door LH.
CDL UNLOCK SW "ON/OFF" Displays "Door unlocked (OFF)" status, determined from locking detection switch in front
door RH.
KEYLESS LOCK "ON/OFF" Displays "Locked (ON)/Other (OFF)" status, determined from lock signal.
KEYLESS UNLOCK "ON/OFF" Displays "Unlocked (ON)/Other (OFF)" status, determined from unlock signal.
Test item Description
INT LAMP Interior room lamp can be operated by any ON-OFF operations.
IGN ILLUM Ignition keyhole illumination can be operated by ON-OFF operation.
SKIA5930E

LT-152
INTERIOR ROOM LAMP
Revision: November 20092006 QX56
2. ACTIVE TEST
1. Select "BCM" on CONSULT-II. Select "INT LAMP" active test.
2. When switch is in DOOR position, use active test to make sure interior room lamp operates.
OK or NG
OK >> Replace BCM. Refer to BCS-20, "BCM" .
NG >> GO TO 3.
3. CHECK INTERIOR ROOM LAMP INPUT
1. Turn ignition switch OFF.
2. Check voltage between front room/map lamp assembly harness connector R102 terminal 1 and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 5.
4. CHECK INTERIOR ROOM LAMP CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M20 terminal 63 and front room/map lamp assembly harness connector R102
terminal 1.
OK or NG
OK >> Replace BCM if interior lamp does not work after setting the connector again. Refer to BCS-20, "
BCM" .
NG >> Repair harness or connector.
5. CHECK INTERIOR ROOM LAMP CIRCUIT
1. Disconnect BCM connector and interior room lamp connector.
2. Check continuity between BCM harness connector M20 terminal 56 and front room/map lamp assembly harness connector R102
terminal 6.
OK or NG
OK >> Replace BCM if interior lamp does not work after setting the connector again. Refer to BCS-20, "
BCM" .
NG >> Repair harness or connector between BCM and room/
map lamp.
Room lamps should turn ON.
LKIA0092E
1 - Ground
: Battery voltage should exist.
WKIA1479E
63 - 1: Continuity should exist.
WKIA1480E
56 - 6: Continuity should exist.
WKIA1481E

INTERIOR ROOM LAMPLT-153
C
DE
F
G H
I
J
L
M A
B
LT
Revision: November 2009 2006 QX56
Personal Lamp Control Does Not Operate (Room/Map Lamps Operate)EKS00BBE
1. CHECK EACH DOOR SWITCH
Select "BCM" on CONSULT-II. With "INT LAMP" data monitor, make
sure switches listed in display item list turn ON-OFF linked with
switch operation. Refer to LT- 1 3 6 , "
SWITCH OPERATION" for
switches and their function.
OK or NG
OK >> GO TO 2.
NG >> Inspect malfunctioning door switch.
2. CHECK PERSONAL LAMP OUTPUT
1. Turn ignition switch OFF.
2. Confirm lamp switch is in the DOOR position.
3. Disconnect personal lamp connector.
4. Open any door.
5. Check voltage between personal lamp harness connector termi- nal 3 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK PERSONAL LAMP CONTROL CIRCUIT
1. Disconnect front room/map lamp assembly connector.
2. Check continuity between front room/map lamp assembly har- ness connector R102 terminal 2 and personal lamp harness
connector terminal 1.
OK or NG
OK >> Replace personal lamp.
NG >> Repair harness or connector.
SKIA5930E
3 - Ground : Battery voltage should exist.
WKIA1482E
2 - 1 : Continuity should exist.
WKIA1908E

LT-154
INTERIOR ROOM LAMP
Revision: November 20092006 QX56
All Step/Foot/Puddle Lamps Do Not OperateEKS00BBF
1. CHECK EACH DOOR SWITCH
Select "BCM" on CONSULT-II. With "INT LAMP" data monitor, make
sure switches listed in display item list turn ON-OFF linked with
switch operation. Refer to LT- 1 5 1 , "
Display Item List" for switches
and their functions.
OK or NG
OK >> GO TO 2.
NG >> Inspect malfunctioning switch system.
2. CHECK STEP LAMP POWER SUPPLY
1. Turn ignition switch OFF.
2. Check voltage between front step lamp LH harness connector D11 terminal + and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
3. CHECK STEP LAMP CONTROL CIRCUIT
1. Disconnect BCM connector and front step lamp LH connector.
2. Check continuity between BCM harness connector M20 terminal 62 and front step lamp LH harness connector D11 terminal –.
OK or NG
OK >> Replace BCM if front step lamp does not work after set- ting the connector again. Refer to BCS-20, "
BCM" .
NG >> Repair harness or connector.
4. CHECK STEP LAMP CIRCUIT
1. Disconnect BCM connector and front step lamp LH connector.
2. Check continuity between BCM harness connector M20 terminal 56 and front step lamp LH harness connector D11 terminal +.
OK or NG
OK >> Replace BCM if front step lamp does not work after set- ting the connector again. Refer to BCS-20, "
BCM" .
NG >> Repair harness or connector.
SKIA5930E
+ - Ground : Battery voltage should exist.
LKIA0306E
– - 62 : Continuity should exist.
WKIA1484E
+ - 56: Continuity should exist.
WKIA1485E

INTERIOR ROOM LAMPLT-155
C
DE
F
G H
I
J
L
M A
B
LT
Revision: November 2009 2006 QX56
All Interior Room Lamps Do Not OperateEKS00BBG
1. CHECK POWER SUPPLY CIRCUIT
1. All interior room lamp switches are OFF.
2. Turn ignition switch ON.
3. Check voltage between BCM harness connector M20 terminal 56 and ground.
OK or NG
OK >> Repair harness or connector. To prevent making a short circuit, be sure to disconnect battery negative cable
after repairing harness, and then reconnect.
NG >> Replace BCM. Refer to BCS-20, "
BCM" .
Ignition Keyhole Illumination Control Does Not OperateEKS00BBH
1. CHECK EACH SWITCH
Select "BCM" on CONSULT-II. With "INT LAMP" data monitor, make
sure switches listed in display item list turn ON-OFF linked with
switch operation. Refer to LT- 1 5 1 , "
Display Item List" for switches
and their functions.
OK or NG
OK >> GO TO 2.
NG >> Inspect malfunctioning switch system.
2. ACTIVE TEST
1. Select "BCM" on CONSULT-II. Select "INT LAMP".
2. Select "IGN ILLUM" active test to make sure lamp operates.
OK or NG
OK >> Replace BCM. Refer to BCS-20, "BCM" .
NG >> GO TO 3.
3. CHECK IGNITION KEYHOLE ILLUMINATION INPUT
1. Check voltage between ignition keyhole illumination harness connector M150 terminal + and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 6. 56 - Ground
: Battery voltage should exist.
WKIA1486E
SKIA5930E
Ignition keyhole illumination should turn ON.
SKIA3992E
+ - Ground: Battery voltage should exist.
WKIA1909E

LT-156
INTERIOR ROOM LAMP
Revision: November 20092006 QX56
4. CHECK IGNITION KEYHOLE ILLUMINATION BULB
1. Turn ignition switch OFF.
2. Disconnect ignition keyhole illumination connector.
3. Check continuity between ignition keyhole illumination terminals + and –.
OK or NG
OK >> GO TO 5.
NG >> Replace ignition keyhole illumination.
5. CHECK IGNITION KEYHOLE ILLUMINATION CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M18 terminal 1 and ignition keyhole illumination harness connector M150 ter-
minal –.
OK or NG
OK >> Replace BCM if ignition keyhole illumination does not work after setting the connector again. Refer to BCS-20,
"BCM" .
NG >> Repair harness or connector.
6. CHECK IGNITION KEYHOLE ILLUMINATION CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and keyhole illumination connector.
3. Check continuity between BCM harness connector M20 terminal 56 and ignition keyhole illumination harness connector M150
terminal +.
OK or NG
OK >> Replace BCM if ignition keyhole illumination does not work after setting the connector again. Refer to BCS-20,
"BCM" .
NG >> Repair harness or connector. + - –
: Continuity should exist.
WKIA3556E
– - 1 : Continuity should exist.
WKIA1911E
+ - 56: Continuity should exist.
WKIA1912E

ILLUMINATIONLT-157
C
DE
F
G H
I
J
L
M A
B
LT
Revision: November 2009 2006 QX56
ILLUMINATIONPFP:27545
Component Parts and Harness Connector LocationEKS00BBI
System DescriptionEKS00BBJ
Control of the illumination lamps operation is dependent upon the position of the lighting switch (combination
switch). When the lighting switch is placed in the 1ST or 2ND position (or if the auto light system is activated)
the BCM (body control module) receives input signal requesting the illumination lamps to illuminate. This input
signal is communicated to the IPDM E/R (intelligent power distribution module engine room) across the CAN
communication lines. The CPU (central processing unit) of the IPDM E/R controls the tail lamp relay coil. This
relay, when energized, directs power to the illumination lamps, which then illuminate.
Power is supplied at all times

to ignition relay, located in the IPDM E/R, and

to tail lamp relay, located in the IPDM E/R, and

through 50A fusible link (letter f , located in the fuse and fusible link box)

to BCM terminal 70, and

through 20A fuse (No. 53, located in the IPDM E/R)

to CPU of the IPDM E/R, and

through 10A fuse [No.19, located in fuse block (J/B)]
WKIA3471E

LT-158
ILLUMINATION
Revision: November 20092006 QX56

to combination meter terminal 8
With the ignition switch in the ON or START position, power is supplied

to ignition relay, located in the IPDM E/R, and

through 10A fuse (No. 59, located in the fuse and relay box)

to BCM terminal 38, and

through 10A fuse [No. 14, located in the fuse block (J/B)]

to combination meter terminal 24.
Ground is supplied

to BCM terminal 67 and

to combination meter terminal 17

through grounds M57, M61 and M79, and

to IPDM E/R terminals 38 and 59

through grounds E9, E15 and E24.
ILLUMINATION OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position (or if the auto light system is activated), the BCM receives
input signal requesting the illumination lamps to illuminate. This input signal is communicated to the IPDM E/R
across the CAN communication lines. The CPU of the IPDM E/R controls the tail lamp relay coil, which, when
energized, directs power

through 10A fuse (No. 36, located in the IPDM E/R)

through IPDM E/R terminal 49

to illumination control switch terminal 1

to power liftgate switch terminal 3

to front room/map lamp assembly (console box illumination) terminal 7

to hazard switch terminal 3

to rear sonar system OFF switch terminal 3

to glove box lamp terminal 1

to display control unit terminal 14

to 4WD shift switch terminal 7 (with 4-wheel drive)

to front air control terminal 23

to rear power vent window switch terminal 5

to DVD player terminal 12 (with DVD entertainment system)

to NAVI control unit terminal 61

to pedal adjusting switch terminal 5

to electric brake (pre-wiring) terminal 4 (with trailer tow)

to front and rear heated seat switch LH and RH terminal 5

to A/T device terminal 11

to VDC OFF switch terminal 3

to tow mode switch terminal 3

to headlamp aiming switch terminal 3

to clock terminal 3, and

through 10A fuse (No. 37, located in the IPDM E/R)

through IPDM E/R terminal 57

to AV switch terminal 3

to audio unit terminal 8

to rear air control terminal 1 and

to rear audio remote control unit terminal 6.
Illumination is controlled

through illumination control switch terminal 2

to power liftgate switch terminal 4