2009 NISSAN LATIO warning

INTELLIGENT KEY SYSTEM
BL-111
< SERVICE INFORMATION >
C
D E
F
G H
J
K L
M A
B BL
N
O P
Terminal and Reference Value for BCM
INFOID:0000000004678889
Terminal Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
2 BR Combination switch
input 5 Input ONLighting, turn, wiper OFF
Wiper dial position 4
3 GR Combination switch
input 4 Input ONLighting, turn, wiper OFF
Wiper dial position 4
4 L Combination switch
input 3 Input ONLighting, turn, wiper OFF
Wiper dial position 4
5 G Combination switch
input 2
Input ONLighting, turn, wiper OFF
Wiper dial position 4
6 V Combination switch
input 1
7 7
BRFront door key cylin-
der switch LH (unlock) Input
OFFON (open, 2nd turn) Momentary 1.5V
OFF (closed) 0V
8 7
YFront door key cylin-
der switch LH (lock) InputOn (open) Momentary 1.5V
OFF (closed) 0V
9 W Rear window defogger
switch Input ONRear window defogger switch
ON 0V
Rear window defogger switch
OFF 5V
11 L Ignition switch (ACC
or ON) InputACC or
ON Ignition switch ACC or ON Battery voltage
12 SB Front door switch RH Input OFF ON (open) 0V
OFF (closed) Battery voltage
13 GR Rear door switch RH Input OFF ON (open) 0V
OFF (closed) Battery voltage
15 W Tire pressure warning
check connector Input OFF — 5V SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E

Trouble Diagnosis Symptom Chart " .
KEY warning lamp illuminates red >> Refer to BL-119, " Trouble Diagnosis Symptom Chart " .
Does not illuminate>>GO TO BL-119, " Trouble Diagnosis Symptom Chart " .
Trouble Diagnosis Symptom Chart " .
No start by mechanical key or Intelligent Key >> Refer to NATS BL-257, " Trouble Diagnosis Procedure " .
Engine starts with Intelligent Key or mechanical key >> GO TO "WORK FLOW".
The engine can be started by all mechanical keys >> GO TO 6 CONSULT-III Application Item " .
DTC is not displayed >> Refer to BL-119, " Trouble Diagnosis Symptom Chart " .
WORK FLOW
Before performing the work flow, carry out prel iminary check. Refer to "PRELIMINARY CHECK". Trouble Diagnosis Symptom
Chart " .
Specific function of Intelligent Ke y system does not operate >> GO TO 2OK >> GO TO 3
NG >> Refer to BL-22 .
OK >> GO TO 4
NG >> Refer to BL-119, " Trouble Diagnosis Symptom Chart " .
OK >> GO TO 5
NG >> Refer to BL-119, " Trouble Diagnosis Symptom Chart " .

Test item Description
DOOR LOCK/UNLOCK This test is able to check door lock/unlock operation.
• The all door lock actuators are unlocked when “ALL UNLK” on CONSULT-III screen is touched.
• The all door lock actuators are locked when “LOCK” on CONSULT-III screen is touched.
ANTENNA This test is able to check Intelligent Key antenna operation.
When the following conditions are met, hazard warning lamps flash.
• Inside key antenna (front console) detects Intelligent Key, when “ROOM ANT1” on CONSULT- III screen is touched.
• Inside key antenna (instrument panel and rear floor) detects Intelligent Key, when “ROOM
ANT2” on CONSULT-III screen is touched.
• Outside key antenna (driver side) detects Intelligent Key, when “DRIVER ANT” on CONSULT-III screen is touched.
• Outside key antenna (passenger side) detects Intelligent Key, when “ASSIST ANT” on CON- SULT-III screen is touched.
• Outside key antenna (rear bumper) detects Intelligent Key, when “BK DOOR ANT” on CON-
SULT-III screen is touched.
OUTSIDE BUZZER(S)
(DRIVER DOOR), (TRUNK) *This test is able to check Intelligent Key warning buzzer operation.
Intelligent Key warning buzzer sounds when “ON” on CONSULT-III screen is touched.
INSIDE BUZZER
(CHIME) This test is able to check Intelligent Key warning chime (Instrument panel) operation.
• Take away warning chime sounds when “TAKE OUT” on CONSULT-III screen is touched.
• Ignition switch warning chime sounds when “KNOB” on CONSULT-III screen is touched.
• Ignition key warning chime sounds when “KEY” on CONSULT-III screen is touched.
INDICATOR This test is able to check warning lamp operation.
• “KEY” Warning lamp (Green) illuminates when “BLUE ON” on CONSULT-III screen is touched.
• “KEY” Warning lamp (Red) illuminates when “RED ON” on CONSULT-III screen is touched.
• “LOCK” Warning lamp illuminates when “KNOB ON” on CONSULT-III screen is touched.
• “KEY” Warning lamp (Green) flashes when “BLUE IND” on CONSULT-III screen is touched.
• “KEY” Warning lamp (RED) flashes when “BLUE IND” on CONSULT-III screen is touched.
• “P-SHIFT” Warning lamp flashes when “K NOB ON” on CONSULT-III screen is touched.

BL
N
O P
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 systems shown in the “Diagnoses/service procedure” col- umn in this order.
Conditions of Vehicle (Operating Conditions)
• Intelligent Key is registered.
• Key is not inserted in ignition switch.
• One or more registered Intelligent Keys are in the vehicle.
KEY WARNING LAMP (RED) ILLUMINATES
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 systems shown in the “Diagnoses/service procedure” col- umn in this order.
Conditions of Vehicle (Operating Conditions)
• Intelligent Key is registered.
• Key is not inserted in ignition switch.
• One or more registered Intelligent Keys are in the vehicle.
KEY WARNING LAMP DOES NOT ILLUMINATE
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 systems shown in the “Diagnoses/service procedure” col- umn in this order.
• Check if ignition switch turns using mechanical key. If it turns, check if “ENGINE START BY I-KEY” in
“WORK SUPPORT” mode is ON.
Conditions of Vehicle (Operating Conditions)
• Intelligent Key is registered.
• Mechanical key is out of ignition switch.
• One or more registered Intelligent Keys are in the vehicle. Symptom Diagnosis/service procedure Reference page
Ignition switch does not turn on with Intelligent Key.
[KEY warning lamp (g reen) illuminates]. 1. Check steering lock solenoid.
BL-147 2. Replace Intelligent Key unit.
BL-158Symptom Diagnosis/service procedure Reference page
Ignition switch does not turn on with Intelligent Key.
[KEY warning lamp (re d) illuminates]. 1. Check inside key antenna.
BL-146 2. Replace Intelligent Key unit.
BL-158Symptom Diagnosis/service procedure Reference page
Ignition switch does not turn on with Intelligent Key.
[GREEN key warning lamp does not illuminate]. 1. Check Intelligent Key unit power supply and ground cir-
cuit. BL-126 2. Check ignition knob switch.
BL-129 3. Check key switch.
BL-127 4. Check "KEY" warn
ing lamp (GREEN). BL-155 5. Replace Intelligent Key unit.
BL-158

BL
N
O P
NON-DTC ITEM
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 “Diagnoses/service procedure” col-
umn in this order.
Conditions of Vehicle (Operating Conditions) • Intelligent Key is registered.
• Multiple mechanical keys are not set in a keyfob. (If mechanical keys are near the ignition switch, the operation may not work properly.)
ENGINE START CONDITION CHECK 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 ”Diagnoses/service procedure” col-
umn in this order.
ALL FUNCTIONS OF INTELLIGENT KEY SYSTEM DO NOT OPERATE
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) • “ENGINE START BY I-KEY” and “LOCK/UNLOCK BY I-KEY” are 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. RED key warning lamp does not illuminate
[Without Intelligent Key]. 1. Check "KEY" warning lamp (RED).
BL-155 2. Replace Intelligent Key unit.
BL-158Symptom Diagnosis/service procedure Reference page
Symptom Diagnosis/service procedure Reference page
Non DTC Item 1. Check key switch.
BL-1272. Check NATS antenna amp.
BL-248Symptom Diagnosis/service procedure Reference page
Engine start condition check 1. Check CVT or A/T device (park position switch).
(with CVT or A/T) BL-153 2. Check key interlock solenoid (with M/T).
BL-1493. Check stop lamp switch (with CVT or A/T).
BL-1504. Check stop lamp switch (with M/T).
BL-152

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)
Warning chime/buzzer functions operating condition is ex tremely complicated, during operating confirmations,
reconfirm the list above twice in order to ensure proper operation. Buzzer reminder does
not operate by request
switch.
(Hazard reminder oper-
ates). Intelligent Key
warning buzzer
does not operate. 1. Check “ANSER BACK WITH I-KEY LOCK” or “ANSER
BACK WITH I-KEY UNLOCK” setting in “WORK SUP-
PORT”. BL-1172. Check Intelligent Key warning buzzer(s).
BL-1423. Replace Intelligent Key unit.
BL-158Hazard reminder does not operate by Intelli-
gent Key (door lock/unlock button).
(Buzzer reminder operates properly). 1. Check “HAZARD ANSWER BACK” setting in “WORK
SUPPORT”. BL-1172. Check hazard function with hazard switch.
BL-1563. Replace Intelligent Key.
BL-158Buzzer reminder does
not operate by Intelligent
Key (door lock/unlock
button).
(Hazard reminder oper-
ates). Intelligent Key
warning buzzer
does not operate. 1. Check “HORN WITH KEYLESS LOCK” setting in “WORK
SUPPORT”. BL-1172. Check Intelligent Key warning buzzer(s).
BL-1423. Replace Intelligent Key unit.
BL-158Symptom Diagnosis/service procedure Reference page
Symptom Diagnosis/service procedure Reference page
Ignition switch warning chime does not oper-
ate. 1. Check ignition knob switch.
BL-1292. Check door switch (hatchback).
BL-1313. Check door switch (sedan).
BL-1344. Check key switch.
BL-1275. Check Intelligent Key warning chime.
BL-1566. Replace Intelligent Key unit.
BL-158Ignition key warning chime does not operate.
(When mechanical key used). 1. Check key switch (Intelligent Key unit input).
BL-1272. Check key switch (BCM input).
BL-1283. Check door switch (hatchback).
BL-1314. Check door switch (sedan).
BL-1345. Check Intelligent Key warning chime.
BL-1566. Replace Intelligent Key unit.
BL-158OFF position warning chime (For internal)
does not operate. 1. Check ignition switch position.
BL-1502. Check ignition knob switch.
BL-1293. Check key switch.
BL-1274. Check combination meter warning chime.
BL-1565. Replace Intelligent Key unit.
BL-158

BL
N
O P
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