NISSAN LATIO 2007 Service Repair Manual

INTERIOR ROOM LAMP
LT-93
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through BCM terminal 56

to map lamp terminal 4.
When interior room lamp switch is ON, ground is supplied

to interior room lamp terminal 1

through map lamp (with map lamp) terminal 7

through map lamp (with map lamp) terminal 1

through grounds M57 and M61.
Power is supplied

through BCM terminal 56

through map lamp (with map lamp) terminal 4

through map lamp (with map lamp) terminal 6

to room lamp terminal 3.
INTERIOR ROOM LAMP TIMER OPERATION
Without Intelligent Key System
When room lamp switch is in DOOR position, and when all conditions below are met, BCM performs timer
control (maximum 30 seconds) for room lamp ON/OFF.
In addition, when the interior room lamp turns ON or OFF there is gradual brightening or dimming over 1 sec-
ond.
Power is supplied

through 10A fuse [No. 14, located in fuse block (J/B)]

to key switch and key lock solenoid terminal 2.
When the key is removed from ignition key cylinder (key switch OFF), power will not be supplied to BCM termi-
nal 37.
When front door key cylinder switch LH is unlocked, ground is supplied

to BCM terminal 7

through front door key cylinder switch LH terminal 3

through front door key cylinder switch LH terminal 2

through grounds M57 and M61.
At the time that front door LH is opened, BCM detects that front door LH is unlocked. It determines that interior
room lamp timer operation condition is met, and turns the room lamp ON for 30 seconds.
When key is in ignition key cylinder (key switch ON),
Power is supplied

through key switch and key lock solenoid terminal 1

to BCM terminal 37.
When key is removed from key switch and key lock solenoid (key switch OFF), the power supply to BCM ter-
minal 37 is terminated. BCM detects that key has been removed, determines that interior room lamp timer
conditions are met, and turns the room lamp ON for 30 seconds.
When front door LH opens → closes, and the key is not inserted in the key switch and key lock solenoid (key
switch OFF), voltage at BCM terminal 47 changes between 0V (door open) → 12V (door closed). The BCM
determines that conditions for room lamp operation are met and turns the room lamp ON for 30 seconds.
Interior room lamp timer control is canceled under the following conditions:

Front door LH is locked (locked front door key cylinder switch LH).

Front door LH is opened (front door switch LH).

Ignition switch ON.
With Intelligent Key System
When the room lamp switch is in DOOR position, and when all conditions below are met, BCM performs timer
control (maximum 30 second) for room lamp ON/OFF.
In addition, when interior room lamp turns ON or OFF there is gradual brightening or dimming over 1 second.
Power is supplied

through 10A fuse (No. 31, located in fuse and fusible link box)

to key switch and ignition knob switch terminals 2 and 4.

LT-94
INTERIOR ROOM LAMP
Revision: June 20062007 Versa
When key is removed from ignition key cylinder (key switch OFF), power will not be supplied to BCM terminal
37.
When the ignition knob switch is released, power will not be supplied to Intelligent Key unit terminal 27.
When front door key cylinder switch LH is unlocked, ground is supplied

to BCM terminal 7

through front door key cylinder switch LH terminal 3

through front door key cylinder switch LH terminal 2

through grounds M57 and M61.
At the time the front door LH is opened, the BCM detects the front door LH is unlocked. It determines that the
interior room lamp timer operation conditions are met, and interior room lamp ON for 30 seconds.
When the key is in ignition key cylinder (key switch ON), or ignition knob switch is pushed, power is supplied

through key switch and ignition knob switch terminal 1

to BCM terminal 37, or

through key switch and ignition knob switch terminal 3

to Intelligent Key unit terminal 27.
When the key is removed from key switch (key switch OFF), power supply to BCM terminal 37 is terminated.
When the ignition knob switch is released, power supply to intelligent key unit is terminated. The BCM detects
that the key has been removed, determines that interior room lamp timer conditions are met, and turns room
lamp ON for 30 seconds.
When the front door LH opens → closes, and key is not inserted in key switch (or ignition knob switch is
released), BCM terminal 47 changes between 0V (door open) → 12V (door closed). BCM determines that
conditions for room lamp operation are met, and turns room lamp ON for 30 seconds.
Interior room lamp timer control is canceled under the following conditions:

Front door LH is locked (with keyfob or front door key cylinder switch LH).

Front door LH is opened (front door switch LH).

Ignition switch ON.
INTERIOR LAMP BATTERY SAVER CONTROL
If an interior room lamp is left ON, it will not be turned OFF even when door is closed.
BCM turns off interior lamp automatically to save battery 30 minutes after ignition switch is turned off.
After lamps are turned OFF by the battery saver system, the lamps illuminate again when

front door key cylinder switch LH is locked or unlocked

door is opened or closed

key is removed from ignition key cylinder or inserted in ignition key cylinder, or the ignition knob switch is
pushed or released.
Interior lamp battery saver control time period can be changed by the function setting of CONSULT-II.

INTERIOR ROOM LAMP
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SchematicEKS00HZL
WKWA4976E

LT-96
INTERIOR ROOM LAMP
Revision: June 20062007 Versa
Wiring Diagram — INT/L —EKS00HZM
LKWA0339E

INTERIOR ROOM LAMP
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LKWA0340E

LT-98
INTERIOR ROOM LAMP
Revision: June 20062007 Versa
LKWA0341E

INTERIOR ROOM LAMP
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LKWA0342E

LT-100
INTERIOR ROOM LAMP
Revision: June 20062007 Versa
LKWA0343E

INTERIOR ROOM LAMP
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Terminals and Reference Values for BCMEKS00HZN
Refer to BCS-12, "Terminals and Reference Values for BCM" .
How to Proceed With Trouble DiagnosisEKS00HZO
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 9 1 , "
System Description" .
3. Perform the preliminary check. Refer to LT-101, "
Preliminary Check" .
4. Check symptom and repair or replace the component.
5. Does the interior room lamp operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. Inspection End
Preliminary CheckEKS00HZP
CHECK POWER SUPPLY AND GROUND CIRCUIT FOR BCM
Refer to BCS-16, "BCM Power Supply and Ground Circuit Check" .
CONSULT-II Function (BCM)EKS00HZQ
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II START PROCEDURE
Refer to BCS-17, "CONSULT-II START PROCEDURE" .
WORK SUPPORT
Display Item List
Reference between “MODE” and “TIME” for “TURN ON/OFF”
DATA MONITOR
Display Item List
BCM diagnostic
test itemDiagnostic mode Description
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the BCM
for setting the status suitable for required operation, input/output signals are
received from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
Item Description CONSULT-II
SET I/L D−UNLCK INTCONThe 30 second operating function of the interior room lamps can be selected
when the front door LH is released (unlocked). ON/OFF
ROOM LAMP ON TIME SETThe time in order to escalate illumination can be adjusted when interior room
lamps are turned on.MODE 1 – 7
ROOM LAMP OFF TIME SETThe time in order to diminish illumination can be adjusted when interior room
lamps are turned off.MODE 1 – 7
MODE12345 6 7
Time (sec.) 0.5 1 2 3 4 5 0
Monitor item Contents
IGN ON SW “ON/OFF”Displays “IGN position (ON)/OFF, ACC position (OFF)” judged from ignition switch sig-
nal.
KEY ON SW “ON/OFF” Displays “Key inserted (ON)/key removed (OFF)” status judged from key switch signal.

LT-102
INTERIOR ROOM LAMP
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NOTE:
Vehicles without intelligent key system display this item, but cannot be monitored.
ACTIVE TEST
Display Item List
WORK SUPPORT
Display Item List
DATA MONITOR
Display Item List
DOOR SW - DR “ON/OFF”Displays status of front door LH as judged from front door switch LH signal. (Door is
open: ON/Door is closed: OFF)
DOOR SW - AS “ON/OFF”Displays “Door open (ON)/Door closed (OFF)” status, determined from front door switch
RH signal.
DOOR SW - RR “ON/OFF”Displays “Door open (ON)/Door closed (OFF)” status, determined from rear door switch
RH signal.
DOOR SW - RL “ON/OFF”Displays “Door open (ON)/Door closed (OFF) ” status, determined from rear door switch
LH signal.
LOCK STATUS “ON/OFF”Display status (door is locked: ON/door is unlocked: OFF) of front door lock actuator LH
(unlock sensor) judged from the front door lock actuator LH (unlock sensor) signal.
CDL LOCK SW “ON/OFF”Displays “Door locked (ON)/Door unlocked (OFF) status, determined from locking
detection switch in the front door LH.
CDL UNLOCK SW “ON/OFF”Displays “Door unlocked (OFF)” status, determined from locking detection switch in
front door RH.
I− KEY LOCK
NOTE“ON/OFF” Displays “Locked (ON)/Other (OFF)” status, determined from lock signal.
I− KEY UNLOCK
NOTE“ON/OFF” Displays “Unlocked (ON)/Other (OFF)” status, determined from unlock signal. Monitor item Contents
Test item Description
INT LAMP Interior room lamp can be operated by any ON-OFF operations.
Item Description CONSULT-II
ROOM LAMP TIMER SET Interior room lamp battery saver timer setting can be changed.MODE 1: 30 min.
MODE 2: 60 min.
ROOM LAMP BAT SAV SETInterior room lamp battery saver control mode can be changed in this mode.
Select interior room lamp battery saver control mode between ON and OFF.ON/OFF
Monitor item Contents
IGN ON SW “ON/OFF”Displays “IGN position (ON)/OFF, ACC position (OFF)” judged from ignition switch sig-
nal.
KEY ON SW “ON/OFF” Displays “Key inserted (ON)/key removed (OFF)” status judged from key switch signal.
DOOR SW - DR “ON/OFF”Displays status of front door LH as judged from front door switch LH signal. (Door is
open: ON/Door is closed: OFF)
DOOR SW - AS “ON/OFF”Displays “Door open (ON)/Door closed (OFF)” status, determined from front door switch
RH signal.
DOOR SW - RR “ON/OFF”Displays “Door open (ON)/Door closed (OFF)” status, determined from rear door switch
RH signal.
DOOR SW - RL “ON/OFF”Displays “Door open (ON)/Door closed (OFF) ” status, determined from rear door switch
LH signal.
LOCK STATUS “ON/OFF”Display status (door is locked: ON/door is unlocked: OFF) of front door lock actuator LH
(unlock sensor) judged from the front door lock actuator LH (unlock sensor) signal.
CDL LOCK SW “ON/OFF”Displays “Door locked (ON)/Door unlocked (OFF) status, determined from locking
detection switch in front door LH.
CDL UNLOCK SW “ON/OFF”Displays “Door unlocked (OFF)” status, determined from locking detection switch in pas-
senger’s door.