Air INFINITI QX56 2004 Factory Service Manual

PARKING, LICENSE PLATE AND TAIL LAMPS
LT-119
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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

LT-142
INTERIOR ROOM LAMP
Revision: August 20072004 QX56
Terminals and Reference Values for BCMEKS007D1
How to Proceed With Trouble DiagnosisEKS007D2
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT-130, "
System Description" .
3. Carry out the Preliminary Check. Refer to LT- 1 4 3 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the interior room lamp operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. Inspection End.
Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
12 R/LFront door switch RH
signalOFFFront door switch
RHON (open) 0V
OFF (closed) Battery voltage
13 GRRear door switch RH
signalOFFRear door switch
RHON (open) 0V
OFF (closed) Battery voltage
22 W/VPower window switch
serial link——
37 B/RKey-in switch detec-
tion signalOFFVehicle key is removed. 0V
Vehicle key is inserted. Battery voltage
38 W/L Ignition power supply ON — Battery voltage
39 W CAN-H — — —
40 R CAN-L — — —
42 GRGlass hatch ajar
switch signalOFFGlass hatch ajar
switchON (open) 0V
OFF (closed) Battery voltage
43 R/BBack door latch (door
ajar switch) signalOFFBack door latch
(door ajar switch)ON (open) 0V
OFF (closed) Battery voltage
47 SBFront door switch LH
signalOFFFront door switch
LHON (open) 0V
OFF (closed) Battery voltage
48 R/YRear door switch LH
signalOFFRear door switch
LHON (open) 0V
OFF (closed) Battery voltage
56 R/GBattery saver output
signalOFF30 minutes after ignition switch is turned
to OFF0V
ON — Battery voltage
57 Y/R Battery power supply OFF — Battery voltage
62 R/W Step lamp signal OFFAny door is open (ON) 0V
All doors are closed (OFF) Battery voltage
63 LInterior room/map
lamp signalOFFEach interior lamp
switch in DOOR
positionAny door
switchON
(open)0V
OFF
(closed)Battery voltage
67 B Ground ON — 0V
70 W/B Battery power supply OFF — Battery voltage
PIIA2344J

INTERIOR ROOM LAMP
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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-19, "Removal and Installa-
tion of 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 (L) 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 (L) and front room/map lamp assembly harness connector
R102 terminal 1 (L).
OK or NG
OK >> Replace BCM if interior lamp does not work after setting
the connector again. Refer to BCS-19, "
Removal and
Installation of 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 (R/G) and front room/map lamp assembly harness connector
R102 terminal 6 (R/G).
OK or NG
OK >> Replace BCM if interior lamp does not work after setting
the connector again. Refer to BCS-19, "
Removal and
Installation of BCM" .
NG >> Repair harness or connector between BCM and room/
map lamp. Room lamps should turn ON.
LKIA0092E
Battery voltage should exist.
WKIA1479E
Continuity should exist.
WKIA1480E
Continuity should exist.
WKIA1481E

LT-148
INTERIOR ROOM LAMP
Revision: August 20072004 QX56
Personal Lamp Control Does Not Operate (Room/Map Lamps Operate)EKS007D6
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 1 , "
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 (R/G) 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 (R) and personal lamp harness
connector terminal 1 (R).
OK or NG
OK >> Replace personal lamp.
NG >> Repair harness or connector.
SKIA5930E
Battery voltage should exist.
WKIA1482E
Continuity should exist.
WKIA1908E

INTERIOR ROOM LAMP
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All Step/Foot/Puddle Lamps Do Not OperateEKS007D7
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 4 6 , "
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 + (R/G) 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 (R/W) and front step lamp LH harness connector D11 termi-
nal – (R/W).
OK or NG
OK >> Replace BCM if step lamp does not work after setting
the connector again. Refer to BCS-19, "
Removal and
Installation of BCM" .
NG >> Repair harness or connector.
4. CHECK STEP LAMP CIRCUIT
1. Disconnect BCM connector and step lamp LH connector.
2. Check continuity between BCM harness connector M20 terminal
56 (R/G) and front step lamp LH harness connector D11 termi-
nal + (R/G).
OK or NG
OK >> Replace BCM if step lamp does not work after setting
the connector again. Refer to BCS-19, "
Removal and
Installation of BCM" .
NG >> Repair harness or connector.
SKIA5930E
Battery voltage should exist.
LKIA0306E
Continuity should exist.
WKIA1484E
Continuity should exist.
WKIA1485E

LT-150
INTERIOR ROOM LAMP
Revision: August 20072004 QX56
All Interior Room Lamps Do Not OperateEKS007D8
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 (R/G) 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-19, "
Removal and Installa-
tion of BCM" .
Ignition Keyhole Illumination Control Does Not OperateEKS007TS
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-146, "
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-19, "Removal and Installa-
tion of BCM" .
NG >> GO TO 3.
3. CHECK IGNITION KEYHOLE ILLUMINATION INPUT
1. Check voltage between ignition keyhole illumination harness
connector M150 terminal + (R/G) and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 6.Battery voltage should exist.
WKIA1486E
SKIA5930E
Keyhole illumination should turn ON.
SKIA3992E
Battery voltage should exist.
WKIA1909E

INTERIOR ROOM LAMP
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4. CHECK IGNITION KEYHOLE ILLUMINATION BULB
1. Disconnect ignition keyhole illumination connector.
2. 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 (BR/W) and keyhole illumination harness connector M150 ter-
minal – (BR/W).
OK or NG
OK >> Replace BCM if ignition keyhole illumination does not
work after setting the connector again. Refer to BCS-19,
"Removal and Installation of BCM" .
NG >> Repair harness or connector.
6. CHECK IGNITION KEYHOLE ILLUMINATION CIRCUIT
1. Disconnect BCM connector and keyhole illumination connector.
2. Check continuity between BCM harness connector M19 terminal
56 (R/G) and keyhole illumination harness connector M150 ter-
minal + (R/G).
OK or NG
OK >> Replace BCM if ignition keyhole illumination does not
work after setting the connector again. Refer to BCS-19,
"Removal and Installation of BCM" .
NG >> Repair harness or connector.Continuity should exist.
WKIA1910E
Continuity should exist.
WKIA1911E
Continuity should exist.
WKIA1912E

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

LT-154
ILLUMINATION
Revision: August 20072004 QX56

to power liftgate switch terminal 4

to front room/map lamp assembly (console box illumination) terminal 8

to AV switch terminal 4

to hazard switch terminal 4

to audio unit terminal 7

to rear sonar system OFF switch terminal 4

to 4WD switch terminal 8 (with 4-wheel drive)

to front air control terminal 24 and

to rear power vent window switch terminal 6

to DVD player terminal 10 (with DVD entertainment system)

to pedal adjusting switch terminal 6

to A/T device terminal 12

to front heated seat switches terminal 6

to VDC OFF switch terminal 4

to tow mode switch terminal 4

to headlamp aiming switch terminal 4

to clock terminal 4 and

to combination meter terminal 18.
Ground is supplied

to illumination control switch terminal 3

to glove box lamp terminal –

to display control unit terminal 3

to rear heated seat switches terminal 6

to electric brake (pre-wiring) terminal 1 and

to compass and thermometer terminal 7

through grounds M57, M61 and M79, and

to NAVI control unit terminal 30

to rear air control terminal 3 and

to rear audio remote control unit terminal 15

through grounds B117 and B132.
With power and ground supplied, illumination lamps illuminate.
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 1ST or 2ND position (or if auto light system is acti-
vated), and the ignition switch is turned from ON or ACC to OFF, the battery saver control function is activated.
Under this condition, the illumination lamps remain illuminated for 5 minutes, then the illumination lamps are
turned off.
When the lighting switch is turned from OFF to 1ST or 2ND position (or if auto light system is activated) after
illumination lamps are turned off by the battery saver control, the illumination lamps illuminate again.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionEKS007DB
Refer to LAN-5, "CAN COMMUNICATION" .