INFINITI QX4 2005 Factory Service Manual

LT-134
INTERIOR ROOM LAMP
Revision: October 20052005 QX56
WKWA1212E

INTERIOR ROOM LAMP
LT-135
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L
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B
LT
Revision: October 20052005 QX56
Wiring Diagram — INT/L —EKS00BB8
WKWA2422E

LT-136
INTERIOR ROOM LAMP
Revision: October 20052005 QX56
WKWA1214E

INTERIOR ROOM LAMP
LT-137
C
D
E
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J
L
MA
B
LT
Revision: October 20052005 QX56
WKWA1215E

LT-138
INTERIOR ROOM LAMP
Revision: October 20052005 QX56
WKWA2496E

INTERIOR ROOM LAMP
LT-139
C
D
E
F
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H
I
J
L
MA
B
LT
Revision: October 20052005 QX56
WKWA2497E

LT-140
INTERIOR ROOM LAMP
Revision: October 20052005 QX56
WKWA2426E

INTERIOR ROOM LAMP
LT-141
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LT
Revision: October 20052005 QX56
WKWA1219E

LT-142
INTERIOR ROOM LAMP
Revision: October 20052005 QX56
Terminals and Reference Values for BCMEKS00BB9
Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
1BR/WIgnition keyhole illumi-
nation signalOFFDoor is locked. (SW OFF) Battery voltage
Door is unlocked. (SW ON) 0V
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 detection
signalOFFVehicle key is removed. 0V
Vehicle key is inserted. Battery voltage
38 W/L Ignition power supply ON — Battery voltage
39 L CAN-H — — —
40 P 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
49 R Luggage lamp output OFFAny door is open (ON) 0V
All doors are closed (OFF) 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
LT-143
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LT
Revision: October 20052005 QX56
How to Proceed With Trouble DiagnosisEKS00BBA
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 1 3 0 , "
System Description" .
3. Carry out the Preliminary Check. Refer to LT-143, "
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.
Preliminary CheckEKS00BBB
INSPECTION FOR POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES OR FUSIBLE LINK
Check for blown BCM fuses or fusible link.
Refer to LT-135, "
Wiring Diagram — INT/L —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse
or fusible link. Refer to PG-4, "
POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connectors.
2. Check voltage between BCM connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between BCM and fuse or fusible link.
3. CHECK GROUND CIRCUIT
Check continuity between BCM and ground.
OK or NG
OK >> Inspection End.
NG >> Check harness ground circuit.
Unit Power source Fuse and fusible link No.
BCMBatteryf
22
Ignition switch ON or START position 59
Terminals Ignition switch position
(+)
(–) OFF ON
ConnectorTerminal
(Wire color)
M2057 (Y/R)
GroundBattery voltage Battery voltage
70 (W/B) Battery voltage Battery voltage
M18 38 (W/L) 0V Battery voltage
WKIA1478E
Terminals
Continuity
ConnectorTe r m i n a l
(Wire color)
M20 67 (B) Ground Yes
LIIA0915E