2004 INFINITI QX56 Ins

PARKING, LICENSE PLATE AND TAIL LAMPS
LT-115
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Revision: August 20072004 QX56
Terminals and Reference Values for IPDM E/REKS007CJ
How to Proceed With Trouble DiagnosisEKS007CK
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 1 0 8 , "
System Description" .
3. Carry out the Preliminary Check. Refer to LT- 11 6 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Do the parking, license and tail lamps operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. Inspection End.
35 O/B Combination switch output 2
ONLighting, turn, wiper OFF
Wiper dial position 4
36 R/W Combination switch output 1
38 W/L Ignition switch (ON) ON — Battery voltage
39 W CAN-H — — —
40 R CAN-L — — —
67 B Ground ON — 0V
70 W/B Battery power supply (fusible link) OFF — Battery voltage Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
SKIA5292E
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
38 B Ground ON — 0V
39 W CAN-H — — —
40 R CAN-L — — —
57 R/LParking, license, and tail
lampONLighting switch
1ST positionOFF 0V
ON Battery voltage
59 B Ground ON — 0V

LT-116
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: August 20072004 QX56
Preliminary CheckEKS007CL
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES OR FUSIBLE LINK
Check for blown fuses or fusible link.
Refer to LT- 111 , "
Wiring Diagram — TAIL/L —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of blown fuse before installing new fuse. Refer to PG-
4, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connectors.
2. Check voltage between BCM harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between BCM and fuse or fus-
ible link.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> Inspection End.
NG >> Check ground circuit harness.
Unit Power source Fuse No.
BCMBattery f
Ignition switch ON or START position 59
IPDM E/RBattery 53
Battery (Tail lamps ON) 37
BCM
(–)Ignition switch position
(+)
OFF ACC ON
ConnectorTe r m i n a l
(wire color)
M18 38 (W/L)
Ground0V 0VBattery
voltage
M20 70 (W/B)Battery
voltageBattery
voltageBattery
voltage
WKIA1436E
BCM
Continuity
ConnectorTe r m i n a l
(wire color)
M20 67 (B) Ground Yes
LIIA0915E

PARKING, LICENSE PLATE AND TAIL LAMPS
LT-117
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Revision: August 20072004 QX56
CONSULT-II FunctionsEKS007CM
Refer to LT- 1 8 , "CONSULT-II Function (BCM)" in HEADLAMP (FOR USA).
Refer to LT- 2 1 , "
CONSULT-II Function (IPDM E/R)" in HEADLAMP (FOR USA).
Parking, License Plate and/or Tail Lamps Do Not IlluminateEKS007CN
1. CHECK COMBINATION SWITCH INPUT SIGNAL
With CONSULT-II
Select “BCM” on CONSULT-II. With “HEAD LAMP” data monitor,
make sure “LIGHT SW 1ST” turns ON-OFF linked with operation of
lighting switch.
Without CONSULT-II
Refer to LT-100, "
Combination Switch Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Check lighting switch. Refer to LT-100, "
Combination
Switch Inspection" .
2. ACTIVE TEST
With CONSULT-II
1. Select “IPDM E/R” on CONSULT-II, and select “ACTIVE TEST”
on “SELECT DIAG MODE” screen.
2. Select “EXTERNAL LAMPS” on “SELECT TEST ITEM” screen.
3. Touch “TAIL” on "ACTIVE TEST" screen.
4. Make sure parking, license plate and tail lamp operation.
Without CONSULT-II
1. Start auto active test. Refer to PG-23, "
Auto Active Test" .
2. Make sure parking, license plate and tail lamp operation.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
3. CHECK IPDM E/R
1. Select “IPDM E/R” on CONSULT-II, and select “DATA MONI-
TOR” on “SELECT DIAG MODE” screen.
2. Make sure “TAIL&CLR REQ” turns ON when lighting switch is in
1ST position.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-29, "Removal and
Installation of IPDM E/R" .
NG >> Replace BCM. Refer to BCS-19, "
Removal and Installa-
tion of BCM" . When lighting switch is in
1ST position: LIGHT SW 1ST ON
SKIA5956E
Parking, license plate and tail lamp should operate
Parking, license plate and tail lamp should operate
WKIA1438E
When lighting switch is in
1ST position: TAIL&CLR REQ ON
SKIA5958E

PARKING, LICENSE PLATE AND TAIL LAMPS
LT-119
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Revision: August 20072004 QX56
5. CHECK PARKING, LICENSE PLATE AND TAIL LAMP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector and
front combination lamp harness connector.
4. Check continuity between IPDM E/R harness connector and
license plate lamps harness connector.
5. Check continuity between IPDM E/R harness connector and
rear combination lamp harness connector.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-29, "Removal and
Installation of IPDM E/R" .
NG >> Repair harness or connector.
IPDM E/R Front combination lamp
Continuity
ConnectorTe r m i n a l
(wire color)ConnectorTe r m i n a l
(wire color)
E124 57 (R/L)RH E107
3 (R/L) Yes
LH E11
WKIA1902E
IPDM E/R License plate lamps
Continuity
ConnectorTe r m i n a l
(wire color)ConnectorTe r m i n a l
(wire color)
E124 57 (R/L) D703 + (R/L) Yes
WKIA1476E
IPDM E/R Rear combination lamp
Continuity
ConnectorTe r m i n a l
(wire color)ConnectorTe r m i n a l
(wire color)
E124 57 (R/L)RH B130
3 (R/L) Yes
LH B70
WKIA1903E

LT-120
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: August 20072004 QX56
6. CHECK GROUND
1. Check continuity between front combination lamp harness con-
nector and ground.
2. Check continuity between license lamps plate harness connec-
tor and ground.
3. Check continuity between rear combination lamp harness con-
nector and ground.
OK or NG
OK >> Check bulbs.
NG >> Repair harness or connector.
Parking, License Plate and Tail Lamps Do Not Turn OFF (After Approx. 10 Min-
utes)
EKS007CO
1. CHECK IPDM E/R
1. Turn ignition switch ON. Turn the combination switch (lighting switch) to the OFF position. Turn ignition
switch OFF.
2. Verify that the parking, license plate, and tail lamps turn on and off after approximately 10 minutes.
OK or NG
OK >> Ignition relay malfunction. Refer to PG-18, "Function of Detecting Ignition Relay Malfunction" .
NG >> Inspection End.
Front combination lamp
Continuity
ConnectorTe r m i n a l
(wire color)
RH E107
4 (B) Ground Yes
LH E11
WKIA1904E
License plate lamps
Continuity
ConnectorTerminal
(wire color)
D703 – (B) Ground Yes
WKIA1080E
Rear combination lamp
Continuity
ConnectorTe r m i n a l
(wire color)
RH B130
1 (B) Ground Yes
LH B70
WKIA1905E

PARKING, LICENSE PLATE AND TAIL LAMPS
LT-121
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Revision: August 20072004 QX56
Front Parking LampEKS007CP
BULB REPLACEMENT
For bulb replacement, refer to LT- 3 2 , "FRONT PARKING LAMP (INNER OR OUTER)" or LT-32, "FRONT
SIDE MARKER LAMP" .
Tail LampEKS007CQ
BULB REPLACEMENT
The tail lamp bulbs are not serviceable separately. Replace rear combination lamp. Refer to LT-122, "Removal
and Installation" .
License Plate LampEKS007TR
BULB REPLACEMENT
1. Remove back door lower finisher. Refer to EI-41, "Removal and Installation" .
2. Turn bulb socket counterclockwise to remove it.
3. Pull bulb from socket.
Installation is in the reverse order of removal.

LT-122
REAR COMBINATION LAMP
Revision: August 20072004 QX56
REAR COMBINATION LAMPPFP:26554
Bulb Replacement (Turn Signal)EKS007CR
NOTE:
The tail/stop lamp bulbs are LEDs and are not serviceable separately.
1. Remove rear combination lamp mounting bolts.
2. Pull rear combination lamp to remove from the vehicle.
3. Turn bulb socket counterclockwise and unlock it.
4. Remove bulb.
Installation is in the reverse order of removal.
Removal and InstallationEKS007CS
1. Remove rear combination lamp mounting bolts.
2. Pull rear combination lamp to remove from the vehicle.
3. Disconnect rear combination lamp connectors.
Installation is in the reverse order of removal.
WKIA1393E
Rear combination lamp
mounting bolts: 2.4 Nm (0.24 kg-m, 21 in-lb)
WKIA1393E

LT-130
INTERIOR ROOM LAMP
Revision: August 20072004 QX56
System DescriptionEKS007CY
When room lamp and personal lamp switch is in DOOR position, room lamp and personal lamp ON/OFF is
controlled by timer according to signals from switches including key switch and key lock solenoid, front door
switch LH, unlock signal from keyfob, door lock and unlock switch, front door lock assembly LH (key cylinder
switch), ignition switch, and glass hatch ajar switch.
When room lamp and personal lamp turns ON, there is a gradual brightening over 1 second. When room lamp
and personal lamp turns OFF, there is a gradual dimming over 1 second.
The room lamp and personal lamp timer is controlled by the BCM (body control module).
Room lamp and personal lamp timer control settings can be changed with CONSULT-II.
Ignition keyhole illumination turns ON when front door LH is opened (door switch ON) or key is removed from
key cylinder. Illumination turns OFF when front door LH is closed (door switch OFF).
Step and foot lamp turns ON when front or rear doors are opened (door switch ON). Lamp turns OFF when
front and rear doors are closed (all door switches OFF).
POWER SUPPLY AND GROUND
Power is supplied at all times

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

to key switch and key lock solenoid terminal 3, and

through 15A fuse [No. 22, located in the fuse block (J/B)]

to BCM terminal 57, and

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

to BCM terminal 70.
When the key is inserted in key switch and key lock solenoid, power is supplied

through the key switch and key lock solenoid terminal 4

to BCM terminal 37.
With the ignition switch in the ON or START position, power is supplied

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

to BCM terminal 38.
Ground is supplied

to BCM terminal 67

through grounds M57, M61 and M79.
When the front door LH is opened, ground is supplied

to BCM terminal 47

through case ground of front door switch LH.
When the front door RH is opened, ground is supplied

to BCM terminal 12

through case ground of front door switch RH.
When the rear door LH is opened, ground is supplied

to BCM terminal 48

through case ground of rear door switch LH.
When the rear door RH is opened, ground is supplied

to BCM terminal 13

through case ground of rear door switch RH.
When the liftgate is opened, ground is supplied

to BCM terminal 43

through back door latch (door ajar switch) terminal 7

through back door latch (door ajar switch) terminal 8

through grounds B7 and B19.
When the glass hatch is opened, ground is supplied

to BCM terminal 42

through case ground of glass hatch ajar switch.