2009 NISSAN LATIO door lock

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Engine status signal T R
Fuel consumption monitor signal T R
Malfunction indicator lamp signal T R
Wide open throttle position signal T R R
A/C switch signal R T
Blower fan motor switch signal R T
Buzzer output signal T R
T R
Day time running light request signal *3
T R
Door lock/unlock status signal T R
Door switch signal T R R R
Front wiper request signal T R
High beam request signal T R R
Horn chirp signal T R
Ignition switch signal T R
Low beam request signal T R
Position lights request signal T R R
Rear window defogger switch signal T R
Sleep/wake up signal R T
T R R R
Theft warning horn request signal T R
Tire pressure signal *4
T R
Trunk open/close status signal T R
Turn indicator signal T R
EPS operation signal R T
EPS warning lamp signal T R
Door lock/unlock/trunk open request signal R T
Hazard request signal R T
Ignition knob switch signal R T
KEY warning lamp signal T R
LOCK warning lamp signal T R
Panic alarm request signal R T
Fuel level sensor signal R T
Overdrive control switch signal T R R
P/N range signal T R
Stop lamp switch signal T R R
Vehicle speed signal R R R R T
R R R T R
R*5
T*5
ABS warning lamp signal R T
Brake warning lamp signal R T
A/T check indicator signal R T Signal name/Connecting unitECM
BCM EPS
I-KEY
M&AABS
TCM *1
TCM *2
IPDM-E

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INTERIOR ROOM LAMP
Component Parts and Har ness Connector Location INFOID:0000000004306628
System Description INFOID:0000000004306629
When room lamp switch is in DOOR position, room la mp ON/OFF is controlled by timer according to signals
from switches including key switch, front door switch LH, unlock signal from keyfob, door lock and unlock
switch, key cylinder lock and unlock switch, ignition switch.
When room lamp turns ON, there is a gradual brightening over 1 second.
When room lamp turns OFF, there is a gradual dimming over 1 second.
Interior room lamp timer is controlled by BCM (body control module).
Interior room lamp timer control settings can be changed with CONSULT-III.
POWER SUPPLY AND GROUND Power is supplied at all times (without Intelligent Key system)
• through 10A fuse [No. 14, located in fuse block (J/B)]
• to key switch and key lock solenoid terminal 2,
• through 10A fuse [No. 8, located in fuse block (J/B)]
• to BCM terminal 57,
• through 40A fusible link (letter g , located in fuse and fusible link box)
• to BCM terminal 70.
Power is supplied at all times (with Intelligent Key system) 1. BCM M18, M19 and M20 (view with
glove box removed) 2. Key switch and key lock solenoid
(without Intelligent Key) M27 3. Key switch and ignition knob switch
(with Intelligent Key) M73
4. Front door switch LH B8 and RH B108 5. Rear door switch LH B6 and RH
B116 6. Front door key cylinder switch LH
D14
7. Back door lock assembly D405 (hatchback) 8. Trunk lamp switch and trunk release
solenoid B127 (sedan)

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• to map lamp terminal 1
Power is supplied
• 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 w hen 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 soleno id (key switch OFF), the power supply to BCM ter-
minal 37 is terminated. BCM detects that key has been re moved, 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 by front door key cylinder switch LH, keyfob or door lock/unlock switch).
• 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.
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 wil l 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

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3. Perform the preliminary check. Refer to
LT-101, " Preliminary Check " .
4. Check symptom and repair or replace the cause of the malfunction.
5. Does the interior room lamp operate norma lly? If YES, GO TO 6. If NO, GO TO 4.
6. Inspection End
Preliminary Check INFOID:0000000004306634
CHECK POWER SUPPLY AND GROUND CIRCUIT FOR BCM Refer to BCS-15, " BCM Power Supply and Ground Circuit Inspection " .
CHECK POWER SUPPLY AND GROUND CIRCUIT FOR IPDM E/R Refer to LT-11, " Preliminary Check " .
CONSULT-III Function (BCM) INFOID:0000000004306635
Refer to LT-11, " CONSULT-III Function (BCM) " .
WORK SUPPORT
Display Item List
Reference between “MODE” and “TIME” for “TURN ON/OFF”
DATA MONITOR
Display Item List Item Description CONSULT-III
SET I/L D −UNLCK INTCON The 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 SET The time in order to escalate illumination can be adjusted when interior room
lamps are turned on. MODE 1 – 7
ROOM LAMP OFF TIME SET The time in order to diminish illumination can be adjusted when interior room
lamps are turned off. MODE 1 – 7
MODE 1 2 3 4 5 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 signal.
KEY ON SW “ON/OFF” Displays “Key inse rted (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.
TRUNK “ON/OFF” Displays "Back door/Trunk open (ON)/closed (OFF)" status, determined from the back
door switch (hatchback) or the trunk lamp switch (sedan).
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 detec-
tion 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.

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ILLUMINATION
System Description INFOID:0000000004306640
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 positi on, BCM receives input signal requesting the illumination
lamps to illuminate. This input signal is communicat ed 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
• to combination switch (spiral cable) terminal 26 (with steering wheel audio control switches)
• to steering wheel audio control switches through combinat ion switch (spiral cable) terminal 18 (with steering
wheel audio control switches).
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 illuminat ion 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

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CHASSIS AND BODY MAINTENANCE
IN-CABIN MICROFILTER
IN-CABIN MICROFILTER : Removal and Installation INFOID:0000000004683699
FUNCTION The fresh air (A) and the recirculated air (B) drawn inside the pas-
senger compartment by the blower fan (1) is kept clean (C) on either
mode by the air conditioner filter (2), located before the evaporator
(3), in the A/C unit assembly.
REPLACEMENT TIMING Replace the air conditioner filter according to the maintenance schedules. Refer to MA-9 .
NOTE:
The air conditioner filter caution label is located inside the glove box door.
REPLACEMENT PROCEDURES 1. Remove the glove box assembly. Refer to IP-11 .
2. Compress the air conditioner filter (1) downward while sliding it to the RH side of the vehicle to release the upper pawl.
3. Move the bottom of air conditioner filter (1) upward as shown to
release the bottom tab, then remove it.
4. Replace the air conditioner filter with new one and in stall the new filter in the A/C unit assembly.
CAUTION:
Make sure that the air cond itioner filter lower tab is fully seated , and that the air conditioner upper
pawl is locked into place securing the new filter into the A/C unit assembly.
5. Install the glove box assembly. Refer to IP-11 .
EXHAUST SYSTEM
EXHAUST SYSTEM : Chec king Exhaust System INFOID:0000000004683700
Check exhaust pipes, muffler and mounting for improper attachment,
leaks, cracks, damage or deterioration.
• If necessary, repair or replace damaged parts.
CVT FLUID SMA211A

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1. Turn blower control dial clockwise to "1" position. Blower should operate on low speed.
2. Turn blower control dial clockwise to "2" position, and continue checking blower speed until all speeds are
checked.
3. Leave blower on Maximum speed.
If NG, go to trouble diagnosis procedure for MTC-33, " Front Blower Motor Circuit " .
If OK, continue the check.
CHECKING DISCHARGE AIR 1. Turn mode door control dial to each position.
2. Confirm that discharge air comes out accord ing to the air distribution table. Refer to MTC-20, " Discharge
Air Flow " .
If NG, go to trouble diagnosis procedure for MTC-31, " Mode Door " .
If OK, continue the check.
CHECKING RECIRCULATION 1. Set intake door lever to REC position.
2. Operate intake door lever to FRE position.
3. Listen for intake door position change (you should hear blower sound change slightly).
If NG, go to trouble diagnosis procedure for MTC-33, " Intake Door " .
If OK, continue the check.
CHECKING TEMPERATURE DECREASE 1. Turn temperature control dial counterclockwise to full cold position.
2. Check for cold air at discharge air outlets.
If NG, go to trouble diagnosis procedure for MTC-45, " Insufficient Cooling " .
If OK, continue the check.
CHECKING TEMPERATURE INCREASE 1. Turn temperature control dial clockwise to full hot position.
2. Check for hot air at discharge air outlets.
If NG, go to trouble diagnosis procedure for MTC-52, " Insufficient Heating " .
If OK, continue the check.
CHECKING A/C SWITCH (IF EQUIPPED) 1. Turn fan control dial to the desired (1 to 4 speed) position.
2. Press A/C switch.
3. A/C switch indicator will turn ON. • Confirm that the compressor clutch engages (sound or visual inspection).
If NG, go to trouble diagnosis procedure for MTC-37, " Magnet Clutch Circuit (If Equipped) " .
If OK, continue the check.
CHECKING DEFROST A/C SWITCH (IF EQUIPPED) 1. Turn fan control dial to the desired (1 to 4 speed) position.
2. Turn mode dial to ( ) DEF.
3. Confirm that the compressor clutch engages (sound or vi sual inspection) and the A/C switch indicator illu-
minates.
If NG, go to trouble diagnosis procedure for MTC-37, " Magnet Clutch Circuit (If Equipped) " .
If all operational checks are OK (symptom cannot be duplicated), go to MTC-22, " How to Perform Trouble
Diagnosis for Quick and Accurate Repair " and perform tests as outlined. If symptom appears, refer to
MTC-22," How to Perform Trouble Diagnosis for Quick and Accurate Repair " and perform applicable trouble diagnosis
procedures.
Mode Door INFOID:0000000004307068
SYMPTOM: Air outlet does not change.
INSPECTION FLOW

MTC-68< SERVICE INFORMATION >
AIR CONDITIONER FILTER
AIR CONDITIONER FILTER
Removal and Installation INFOID:0000000004307087
FUNCTION
The fresh air (A) and the recirculated air (B) drawn inside the pas-
senger compartment by the blower fan (1) is kept clean (C) on either
mode by the air conditioner filter (2), located before the evaporator
(3), in the A/C unit assembly.
REPLACEMENT TIMING
Replace the air conditioner filter accord ing to the maintenance schedules. Refer to MA-9 .
NOTE:
The air conditioner filter caution label is located inside the glove box door.
REPLACEMENT PROCEDURES
1. Remove the glove box assembly. Refer to IP-11 .
2. Compress the air conditioner filter (1) downward while sliding it to the RH side of the vehicle to release the upper pawl.
3. Move the bottom of air conditioner filter (1) upward as shown to release the bottom tab, then remove it.
4. Replace the air conditioner filter with new one and install the new filter in the A/C unit assembly. CAUTION:
Make sure that the air conditioner filter lower tab is fully seated, and that the air conditioner upper
pawl is locked into place securing the ne w filter into the A/C unit assembly.
5. Install the glove box assembly. Refer to IP-11 . WJIA2253E
SJIA0652E