2009 NISSAN LATIO key battery

BL-114< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
43 5
R Back door switch Input OFF ON (open) 0V
OFF (closed) Ba ttery voltage
44 5
LG Rear wiper auto stop Input ON Rear wiper operating 0
Rear wiper stopped Battery
45 7
GR Lock switch Input OFF ON (lock) 0V
OFF Battery voltage
46 7
L Unlock switch Input OFF ON (unlock) 0V
OFF Battery voltage
47 BR Front door switch LH Input OFF ON (open) 0V
OFF (closed) Ba ttery voltage
48 O Rear door switch LH Input OFF ON (open) 0V
OFF (closed) Ba ttery voltage
49 P Luggage room lamp Output OFF Any door open (ON) 0V
All doors closed (OFF) Battery voltage
50 SB A/C indicator Output ON A/C OFF 0
A/C ON Battery voltage
53 5
RBack door lock assem-
bly (actuator) Output OFF Back door (open) Battery voltage
53 6
RTrunk lamp switch and
trunk release solenoid Output OFF Trunk lid (open) Battery voltage
55 5
VRear wiper motor out-
put Output ONOFF 0
ON Battery voltage
56 R Battery saver output Output OFF
30 minutes after ignition
switch is turned OFF 0V
ON — Battery voltage
57 LG Battery power supply Input OFF — Battery voltage
59 7
GFront door lock actua-
tor LH (unlock) Output OFFOFF (neutral) 0V
ON (unlock) Battery voltage
60 V Turn signal (left) Output ON Turn left ON
61 W Turn signal (right) Output ON Turn right ON
63 BR Interior room lamp Output OFF Any door
switch ON (open) 0V
OFF (closed) Battery voltage
Terminal
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition SKIA3009J
SKIA3009J

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1: With Intelligent Key
2: Without Intelligent Key
3: Hatchback without Intelligent Key
4: Sedan without Intelligent Key
5: Hatchback
6: Sedan
7: With power door locks
8: With power windows
Trouble Diagnosis Procedure INFOID:0000000004305041
PRELIMINARY CHECK Configuration " .
OK or NG OK >> GO TO 3
NG >> Change BCM configuration for "I-KEY" to "WITH". Refer to BCS-18, " Configuration " .
Intelligent Key Battery Replacement " .
The engine cannot be started by all Intelligent Keys >> GO TO 4 65
7
SBAll door lock actuators
(lock) Output OFFOFF (neutral) 0V
ON (lock) Battery voltage
66 7
GFront door lock actua-
tor RH, rear door lock
actuators LH/RH (un-
lock) Output OFFOFF (neutral) 0V
ON (unlock) Battery voltage
67 B Ground Input ON — 0V
68 8
LPower window power
supply (RAP) Output —Ignition switch ON Battery voltage
Within 45 seconds after igni-
tion switch OFF Battery voltage
More than 45 seconds after ig-
nition switch OFF 0V
When front door LH or RH is
open or power window timer
operates 0V
69 8
P Battery power supply
OutputOFF
— Battery voltage
70 Y Battery power supply Input OFF — Battery voltage
Terminal
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition

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Trouble Diagnosis Symptom Chart INFOID:0000000004305044
KEY WARNING LAMP (GREEN) ILLUMINATES NOTE: Monitor item Description
CONFIRM KEY FOB ID It can be checked whether Intelligent Key ID code is registered or not in this mode.
TAKE OUT FROM WINDOW
WARN Take away warning chime (from window) mode can be changed to operate (ON) or not operate
(OFF) with this mode. The operation mode will be changed when “CHANGE SETT” on CONSULT-
III screen is touched.
LOW BAT OF KEY FOB WARN Intelligent Key low battery warning mode can be changed to operate (ON) or not operate (OFF)
with this mode. The operation mode will be changed when “CHANGE SETT” on CONSULT-III
screen is touched.
ANSWER BACK FUNCTION Buzzer reminder function mode by Intelligent button can be changed to operate (ON) or not oper-
ate (OFF) with this mode. The operation mode will be changed when “CHANGE SETT” on CON-
SULT-III screen is touched.
SELECTIVE UNLOCK FUNC-
TION Selective unlock function mode can be changed to operate (ON) or not operate (OFF) with this
mode. The operation mode will be changed when “CHANGE SETT” on CONSULT-III screen is
touched.
ANTI KEY LOCK IN FUNCTION Key reminder function mode can be changed to operate (ON) or not operate (OFF) with this mode.
The operation mode will be changed when “CHANGE SETT” on CONSULT-III screen is touched.
HORN WITH KEYLESS LOCK Horn reminder function mode by Intelligent Key remote control button can be changed to operate
(ON) or not operate (OFF) with this mode. The operation mode will be changed when “CHANGE
SETT” on CONSULT-III screen is touched.
HAZARD ANSWER BACK Hazard reminder function mode can be selected from the following with this mode. The operation
mode will be changed when “CHANGE SE TT” on CONSULT-III screen is touched.
• LOCK ONLY: Door lock operation only
• UNLOCK ONLY: Door unlock operation only
• LOCK/UNLOCK: Lock/Unlock operation
• OFF: Non-operation
ANSWER BACK WITH I-KEY
LOCK Buzzer reminder function (lock operation) mode by door request switch (driver side, passenger
side and back door side) can be selected from the following with this mode. The operation mode
will be changed when “ CHANGE SETT” on CONSULT- III screen is touched.
• BUZZER: Sound buzzer
• OFF: Non-operation
ANSWER BACK WITH I-KEY UN-
LOCK Buzzer reminder function (unlock operation) mode by door request switch can be changed to op-
erate (ON) or not operate (OFF) with this mode.
AUTO RELOCK TIMER Auto door lock timer mode can select the following with this mode.
• 1 minute
• OFF: Non-operation
PANIC ALARM DELAY Panic alarm button's pressing time on Intelligent Key remote control button can be selected from
the following with this mode. The operation mode will be changed when “CHANGE SETT” on
CONSULT-III screen is touched.
• 0.5 second
• 1.5 second
• OFF: Non-operation
P/W DOWN DELAY Unlock button's pressing time on Intelligent Key remote control button can be selected from the
following with this mode. The operation mode will be changed when “CHANGE SETT” on CON-
SULT-III screen is touched.
• 3 seconds
• 5 seconds
• OFF: Non-operation
ENGINE START BY I-KEY Engine start function mode can be changed to operate (ON) or not operate (OFF) with this mode.
The operation mode will be changed when “CHANGE SETT” on CONSULT-III screen is touched.
LOCK/UNLOCK BY I-KEY Door lock/unlock function by door request switch (driver side, passenger side and back door side)
mode can be changed to operate (ON) or not operate (OFF) with this mode. The operation mode
will be changed when “ CHANGE SETT” on CONSULT- III screen is touched.

115, " Trouble Diagnosis Procedure " .
• Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following “symptoms” are detected, check system s shown in the “Diagnosis/procedure” column in this
order.
Conditions of Vehicle (Operating Conditions)
• “LOCK/UNLOCK BY I-KEY” is ON when setting on CONSULT-III.
• Mechanical key is out of ignition switch.
• Ignition switch is not depressed.
• All doors are closed.
• Intelligent Key is registered.
REMOTE KEYLESS ENTRY FUNCTION MALFUNCTION
Symptom Diagnosis/service procedure Reference page
All function of Intelligent Key system dose not
operate. 1. Check Intelligent Key unit power supply and ground
circuit. BL-126 2. Check Intelligent Key battery inspection.
BL-158 3. Replace Intelligent Key unit.
BL-158Symptom Diagnosis/service procedure Reference page
Door lock/unlock does not operate by all request
switches. 1. Check door switch (hatchback).
BL-131 2. Check door switch (sedan).
BL-134 3. Check key switch.
BL-127 4. Check ignition knob switch.
BL-129 5. Replace Intelligent Key unit.
BL-158Door lock/unlock does not operate by request
switch (driver side). 1. Check door request switch (driver side).
BL-135 2. Check outside key antenna (driver side).
BL-143 3. Replace Intelligent Key unit.
BL-158Door lock/unlock does not operate by request
switch (passenger side). 1. Check door request switch (passenger side).
BL-135 2. Check outside key antenna (passenger side).
BL-143 3. Replace Intelligent Key unit.
BL-158Door lock/unlock does not operate by back door
request switch (hatchback). 1. Check back door request switch.
BL-137 2. Check outside key antenna (rear bumper).
BL-144 3. Replace Intelligent Key unit.
BL-158Door lock/unlock does not operate by trunk
opener request switch (sedan). 1. Check trunk opener request switch.
BL-138 2. Check outside key antenna (rear bumper).
BL-144 3. Replace Intelligent Key unit.
BL-158Auto lock function does not operate.
1. Check “AUTO RELOCK TI
MER” setting in “WORK
SUPPORT”. BL-117 2. Replace Intelligent Key unit.
BL-158Key reminder function does not operate.
1. Check door switch (hatchback).
BL-131 2. Check door switch (sedan).
BL-134 3. Check inside key antenna.
BL-146 4. Check unlock sensor.
BL-140 5. Check Intelligent Key battery.
BL-158 6. Replace Intelligent Key unit.
BL-158

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NOTE:
• Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-115, " Trouble Diagnosis Procedure " .
• Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following “symptoms” are detected, check syst ems shown in the “Diagnosis/service procedure” column
in this order.
Conditions of Vehicle (Operating Conditions) • Ignition switch is not depressed.
• All doors are closed.
HAZARD AND BUZZER REMINDER FUNCTION MALFUNCTION NOTE:
• Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-115, " Trouble Diagnosis Procedure " .
• Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following “symptoms” are detected, check syst ems shown in the “Diagnosis/service procedure” column
in this order.
Conditions of Vehicle (Operating Conditions) • Ignition switch is not depressed.
• All doors are closed. Symptom Diagnosis/service procedure
Reference
page
All of the remote keyless entry functions do
not operate. 1. Check Intelligent Key unit power supply and ground circuit.
BL-1262. Check key switch (BCM input).
BL-1283. Check Intelligent Key battery.
BL-1584. Remote Keyless Entry function inspection.
BL-1585. Replace Intelligent Key unit.
BL-158Auto lock function does not operate.
1. Check “AUTO RELOCK TIMER”
setting in “WORK SUPPORT”. BL-117 2. Replace Intelligent Key unit.
BL-158Key reminder function does not operate.
1. Check door switch (hatchback).
BL-1312. Check door switch (sedan).
BL-1343. Check inside key antenna.
BL-1464. Check unlock sensor.
BL-1405. Check Intelligent Key battery.
BL-1586. Replace Intelligent Key unit.
BL-158Panic alarm function does not operate.
1. Check “PANIC ALARM DELAY” setting in “WORK SUPPORT”.
BL-1172. Check Intelligent Key battery inspection.
BL-1583. Check horn function.
BL-1574. Check headlamp function.
BL-1575. Check key switch.
BL-1276. Check ignition knob switch.
BL-1297. Replace Intelligent Key unit.
BL-158Symptom Diagnosis/service procedure Reference page
Hazard reminder does not operate by request
switch.
(Buzzer reminder operate). 1. Check “HAZARD ANSWER BACK” setting in “WORK
SUPPORT”. BL-1172. Check hazard function with hazard switch.
BL-1563. Replace Intelligent Key unit.
BL-158

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WARNING LAMP FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-115, " Trouble Diagnosis Procedure " .
• If the following “symptoms” are detected, check syst ems shown in the “Diagnosis/service procedure” column
in this order.
OFF position warning
chime/buzzer (for ex-
ternal) does not oper-
ate. Both Intelligent Key
warning chime and
buzzer do not oper-
ate. 1. Check ignition switch position.
BL-1502. Check ignition knob switch.
BL-1293. Check key switch.
BL-1274. Check Intelligent Key warning chime.
BL-1565. Check Intelligent Ke
y warning buzzer(s). BL-142 6. Replace Intelligent Key unit.
BL-158Intelligent Key warn-
ing buzzer does not
operate. Check Intelligent Key warning buzzer(s).
BL-142Take away warning
chime/buzzer (door
open to close) does
not operate. Both Intelligent Key
warning chime and
buzzer do not oper-
ate. 1. Check door switch (hatchback).
BL-1312. Check door switch (sedan).
BL-1343. Check inside key antenna.
BL-1464. Check key switch.
BL-1275. Check Intelligent Key warning chime.
BL-1426. Check Intelligent Ke
y warning buzzer(s). BL-142 7. Replace Intelligent Key unit.
BL-158Intelligent Key warn-
ing buzzer does not
operate. Check Intelligent Key warning buzzer(s).
BL-142Take away warning chime (through window)
does not operate. 1.
Check “TAKE OUT FROM WINDOW WARN” setting in
“WORK SUPPORT”. BL-1172. Check inside key antenna.
BL-1463. Check key switch.
BL-1274. Check Intelligent Key battery.
BL-1585. Check Intelligent Key warning chime.
BL-1566. Replace Intelligent Key unit.
BL-158Door lock operation warning buzzer does not
operate. 1. Check door switch (hatchback).
BL-1312. Check door switch (sedan).
BL-1343. Check ignition knob switch.
BL-1294. Check door request switch.
BL-1355. Check back door request switch (hatchback).
BL-1376. Check trunk opener request switch (sedan).
BL-1387. Check outside key antenna (driver side and passenger side).
BL-1438. Check outside key antenna (rear bumper).
BL-1449. Check inside key antenna.
BL-14610. Check Intelligent Key warning buzzer(s).
BL-14211. Replace Intelligent Key unit.
BL-158One warning buzzer does not operate (se-
dan). Check Intelligent Key warning buzzer(s).
BL-142Symptom Diagnosis/service procedure Reference page

NO DTC IS DETECT
ED>> Inspection End.
CAN COMM [U1000]>> After printing “SELF-DIAGNOSI S RESULTS”, go to “CAN SYSTEM”. Refer to LAN-17, " Trouble Diagnosis Flow Chart " .
CAN COMM2 [U1010] >> Replace Intelligent Key unit. Refer to BL-158, " Removal and Installation of Intelli-
gent Key Unit " .
Power Supply and Ground Circuit Inspection INFOID:00000000043050462. Check Intelligent Key battery.
BL-158 3. Check KEY warning lamp (green).
BL-155 4. Replace Intelligent Key unit.
BL-158P position warning lamp does not illuminate properly.
(With CVT or A/T) 1. Check CVT or A/T device (park position switch).
BL-153 2. Check “P-SHIFT” warning lamp (red).
BL-154 3. Replace Intelligent Key unit.
BL-158LOCK warning lamp does not illuminate properly.
(With M/T) 1. Check key interlock solenoid.
BL-149 2. Check "LOCK" warning lamp.
BL-155 3. Replace Intelligent Key unit.
BL-158Take away warning lamp does not illuminate properly.
(Take away warning chime is operated). 1. Check KEY warning lamp (red).
BL-158 2. Replace Intelligent Key unit.
BL-158Ignition switch warning lamp does not illuminate properly.
(Ignition switch warning chime is operated). 1. Check KEY warning lamp (red).
BL-155 2. Replace Intelligent Key unit.
BL-158CONSULT-III display item DTC code
NO DTC IS DETECTED — CAN COMM U1000
CAN COMM2 U1010

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OK or NG OK >> GO TO 2
NG >> Repair or replace Intelligent Key power supply circuit. OK >> Power supply and ground circuits are OK.
NG >> Repair or replace the Intelligent Key unit ground circuit.
Key Switch (Intelligent Key Unit Input) Check INFOID:0000000004305047OK >> Key switch circuit is OK.
NG >> GO TO 2 Terminals
Condition of key switch Voltage (V)
(Approx.)
(+)
(–)
Intelligent Key
unit connector Terminal
M52 7 Ground Insert mechanical key
into ignition switch Battery voltage
Remove mechanical
key from ignition switch 0