2008 NISSAN LATIO service

LT-102
< SERVICE INFORMATION >
INTERIOR ROOM LAMP
Check continuity between interior room lamp harness connector R7
(A) terminal 2 and map lamp harness connector R3 (B) terminal 5.
OK or NG
OK >> GO TO 9.
NG >> Repair harness or connector.
9.CHECK CIRCUIT BETWEEN MAP LAMP AND BCM
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M20 (A) ter-
minal 63 and map lamp harness connector R2 (B) terminal 2.
OK or NG
OK >> Replace BCM if room lamp does not work after setting
the connector again. Refer to BCS-18, "
Removal and
Installation of BCM" .
NG >> Repair harness or connector.
Interior Room Lamp Control Does Not Operate (Without Map Lamp)INFOID:0000000001704477
1.CHECK EACH SWITCH
Select "BCM" on CONSULT-III. With "INT LAMP" data monitor, make sure switches listed in display item list
turn ON-OFF linked with switch operation. Refer to LT-99, "
CONSULT-III Function (BCM)" 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-III. Select "INT LAMP" active test.
2. When room lamp switch is in DOOR position, make sure room lamp operates.
OK or NG
OK >> Replace BCM. Refer to BCS-18, "Removal and Installation of BCM" .
NG >> GO TO 3.
3.CHECK ROOM LAMP INPUT VOLTAGE
1. Turn ignition switch OFF.
2. Check voltage between interior room lamp harness connector
R7 terminal 3 and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 6.
4.CHECK ROOM LAMP 2 - 5 : Continuity should exist.
WKIA5556E
63 - 2 : Continuity should exist.
WKIA5518E
Room lamp should operate.
3 - Ground : Battery voltage should exist.
WKIA5610E

INTERIOR ROOM LAMP
LT-103
< SERVICE INFORMATION >
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1. Disconnect room lamp connector.
2. Check continuity between room lamp terminals.
OK or NG
OK >> GO TO 5.
NG >> Check bulb. If OK, replace room lamp. Refer to LT-103, "
Bulb Replacement" .
5.CHECK ROOM LAMP CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M20 (A) ter-
minal 56 and room lamp harness connector R7 (B) terminal 3.
OK or NG
OK >> GO TO 6.
NG >> Repair harness or connector.
6.CHECK ROOM LAMP CIRCUIT
1. Disconnect BCM connector and room lamp connector.
2. Check continuity between BCM harness connector M20 (A) ter-
minal 63 and room lamp harness connector R7 (B) terminal 2.
OK or NG
OK >> Replace BCM if interior lamp does not work after setting
the connector again. Refer to BCS-18, "
Removal and
Installation of BCM" .
NG >> Repair harness or connector.
Bulb ReplacementINFOID:0000000001704478
ROOM LAMP
1. Remove lens (1) by inserting suitable tool and releasing LH
(switch side first).
2. Remove bulb (2).
3. Installation is in the reverse order of removal.
NOTE:
Insert the lens hook end RH side first to install lens.
Removal and InstallationINFOID:0000000001704479
ROOM LAMP
Room lamp
Condition Continuity
Te r m i n a l
23 Room lamp switch is in
DOOR positionYe s
Room lamp switch is in OFF
positionNo
WKIA5609E
56 - 3 : Continuity should exist.
WKIA5559E
63 - 2 : Continuity should exist.
WKIA5560E
PKIC1048E

LT-104
< SERVICE INFORMATION >
INTERIOR ROOM LAMP
Removal
1. Remove lens (1) and remove the room lamp by pulling down to
release the room lamp metal clips (A).
2. Disconnect connector and remove room lamp.
Installation
Installation is in the reverse order of removal.
PKIC1049E

ILLUMINATION
LT-105
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ILLUMINATION
System DescriptionINFOID:0000000001704480
The control of the illumination lamps operation is dependent upon the position of the lighting switch. When the
lighting switch is placed in the 1ST or 2ND position, the BCM (body control module) receives input signal
requesting the illumination lamps to illuminate. This input signal is communicated to IPDM E/R (intelligent
power distribution module engine room) across CAN communication lines. CPU (central processing unit)
located in the IPDM E/R controls the tail lamp relay coil. This relay, when energized, directs power to the illu-
mination lamps, which then illuminate.
Power is supplied at all times
• to ignition relay, located in IPDM E/R,
• to tail lamp relay, located in IPDM E/R,
• through 15A fuse (No. 52, located in IPDM E/R) and
• through 20A fuse (No. 53, located in IPDM E/R)
• to CPU located in IPDM E/R,
• through 40A fusible link (letter g , located in fuse and fusible link box)
• to BCM terminal 70, and
• through 10A fuse [No. 8, located in fuse block (J/B)]
• to BCM terminal 57.
With the ignition switch in the ON or START position, power is supplied
• to ignition relay, located in IPDM E/R, and
• through 10A fuse [No. 6, located in fuse block (J/B)]
• to BCM terminal 38.
With the ignition switch in the ACC or ON position, power is supplied
• through 10A fuse [No. 20, located in fuse block (J/B)]
• to BCM terminal 11.
Ground is supplied
• to BCM terminal 67
• through grounds M57 and M61, and
• to IPDM E/R terminals 39 and 59
• through grounds E15 and E24.
ILLUMINATION OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position, BCM receives input signal requesting the illumination
lamps to illuminate. This input signal is communicated to IPDM E/R across CAN communication lines. CPU
located in the IPDM E/R controls the tail lamp relay coil, which, when energized, directs power
• through 10A fuse (No. 37, located in IPDM E/R)
• through IPDM E/R terminal 29
• to microphone terminal 3 (with Bluetooth)
• to illumination control switch terminal 1
• to glove box lamp terminal 1 (with glovebox lamp)
• to audio unit terminal 9
• to front air control terminal 5
• to A/T device terminal 3 (with 4-speed A/T)
• to CVT device terminal 3 (with CVT)
• to hazard switch terminal 3
• to combination meter terminal 12
• to door mirror remote control switch terminal 16, and
Ground is supplied
• to microphone terminal 2 (with Bluetooth)
• to glove box lamp terminal 2 (with glove box lamp), and
• to illumination control switch terminal 3
• through grounds M57 and M61.
The illumination control switch controls illumination intensity by varying the ground to the following
• through illumination control switch terminal 2
• to audio unit terminal 8
• to front air control terminal 6
• to A/T device terminal 4 (with 4-speed A/T)
• to CVT device terminal 3 (with CVT)
• to hazard switch terminal 4

LT-106
< SERVICE INFORMATION >
ILLUMINATION
• to combination meter terminal 13,
• to door mirror remote control switch terminal 15,
With power and ground supplied, illumination lamps illuminate.
EXTERIOR LAMP BATTERY SAVER CONTROL
Refer to LT-72, "System Description" .
CAN Communication System DescriptionINFOID:0000000001704481
Refer to LAN-6, "System Description" .

ILLUMINATION
LT-107
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SchematicINFOID:0000000001704482
ALLWA0129GB

LT-108
< SERVICE INFORMATION >
ILLUMINATION
Wiring Diagram - ILL -
INFOID:0000000001704483
LKWA0344E

ILLUMINATION
LT-109
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LKWA0345E