Combination INFINITI QX56 2004 Factory Service Manual

PARKING, LICENSE PLATE AND TAIL LAMPS
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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

PARKING, LICENSE PLATE AND TAIL LAMPS
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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

LT-118
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: August 20072004 QX56
4. CHECK INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect front combination lamp, license plate lamp and rear combination lamp connectors.
3. Turn ignition switch ON.
4. Select “IPDM E/R” on CONSULT-II, and select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
5. Select “TAIL LAMP” on “SELECT TEST ITEM” screen.
6. Touch “ON” on "ACTIVE TEST" screen.
7. When tail lamp is operating, check voltage between front combination lamp, license plate lamp, rear com-
bination lamp harness connector and ground.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Start auto active test. Refer to PG-23, "
Auto Active Test" .
3. When tail lamp is operating, check voltage between front combination lamp, license plate lamp, rear com-
bination lamp harness connector and ground.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
Front combination lamp
(–) Voltage (+)
ConnectorTe r m i n a l
(wire color)
RH E107
3 (R/L) Ground Battery voltage
LH E11
WKIA1900E
License plate lamp
(–) Voltage (+)
ConnectorTe r m i n a l
(wire color)
D703 + (R/L) Ground Battery voltage
WKIA1076E
Rear combination lamp
(–) Voltage (+)
ConnectorTe r m i n a l
(wire color)
RH B130
3 (R/L) Ground Battery voltage
LH B70
WKIA1901E

PARKING, LICENSE PLATE AND TAIL LAMPS
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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
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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

INTERIOR ROOM LAMP
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When the front door LH or RH is unlocked by the door lock and unlock switch, BCM receives serial data

to BCM terminal 22

through main power window and door lock/unlock switch terminal 14 or power window and door lock/
unlock switch RH terminal 16

through main power window and door lock/unlock switch terminal 17 or power window and door lock/
unlock switch RH terminal 11

through grounds M57, M61 and M79.
When the front door LH is unlocked by the key, the BCM receives serial data

to BCM terminal 22

through main power window and door lock/unlock switch terminal 14

through main power window and door lock/unlock switch terminal 6

through front door lock assembly LH (key cylinder switch) terminal 6

through front door lock assembly LH (key cylinder switch) terminal 5

through grounds M57, M61 and M79.
When a signal, or combination of signals is received by BCM, ground is supplied

to door mirror LH and RH terminal 13

to front room/map lamp assembly terminal 1

through front room/map lamp assembly terminal 2

to personal lamps terminal 1

through BCM terminal 63, and

to cargo lamp terminal 1

through BCM terminal 49.
With power and ground supplied, the lamps illuminate.
SWITCH OPERATION
When any door switch is ON (door is opened), ground is supplied

to front and rear step lamps LH and RH and foot lamp LH and RH terminal –

through BCM terminal 62.
And power is supplied

through BCM terminal 56

to front and rear step lamps LH and RH terminal +

to ignition keyhole illumination terminal +

to door mirror LH and RH terminal 12

to front room/map lamp assembly terminal 6

to vanity lamps terminal 1

to personal lamps terminal 3

to cargo lamp terminal 2, and

to foot lamp LH and RH terminal +.
When map lamp switch is ON, ground is supplied

to front room/map lamp assembly terminal 5

through grounds M57, M61 and M79.
When vanity lamp (LH and RH) is ON, ground is supplied

to vanity lamp (LH and RH) terminal 2

through grounds M57, M61 and M79.
When cargo lamp is ON, ground is supplied through cargo lamp case ground.
ROOM LAMP TIMER OPERATION
When lamp switch is in DOOR position, and when all conditions below are met, BCM performs timer control
(maximum 30 seconds) for interior room lamp and map lamp ON/OFF.
Power is supplied

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

LT-152
ILLUMINATION
Revision: August 20072004 QX56
ILLUMINATIONPFP:27545
Component Parts and Harness Connector LocationEKS007D9
System DescriptionEKS007DA
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 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)]

to combination meter terminal 8, and
WKIA3399E

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

to ignition relay in the IPDM E/R, 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 +

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 25

to pedal adjusting switch terminal 5

to electric brake (pre-wiring) terminal 4

to heated seat switches 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

to compass and thermometer terminal 4, 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