2009 NISSAN LATIO key battery

BACK DOOR LOCK
BL-175
< 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:0000000004678868
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

BL-176< SERVICE INFORMATION >
BACK DOOR LOCK
18 V Remote keyless entry
receiver (ground) Output OFF — 0V
19 BR Remote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G Remote keyless entry
receiver signal (signal) Input OFFStand-by (keyfob buttons re-
leased)
When remote keyless entry
receiver receives signal from
keyfob (keyfob buttons
pressed)
21 P NATS antenna amp. Input/
Output OFF
→
ON Ignition switch (OFF
→ ON) Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
23 R Security indicator
lamp Output OFFGoes OFF
→ illuminates (Ev-
ery 2.4 seconds) Battery voltage
→ 0V
25 LG NATS antenna amp. Input/
Output OFF
→
ON Ignition switch (OFF
→ ON) Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then
return to battery voltage.
26 GR Thermo control amp. Input ON A/C switch ON
27 O Compressor ON sig-
nal Input ONA/C switch OFF 5V
A/C switch ON 0V
28 P Front blower monitor Input ON Front blower motor OFF Battery voltage
Front blower motor ON 0V
29 L Hazard switch Input OFF ON 0V
OFF 5V
Terminal
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition LIIA1893E
LIIA1894E
LIIA1895E
ZJIA0719J

BACK DOOR LOCK
BL-177
< SERVICE INFORMATION >
C
D E
F
G H
J
K L
M A
B BL
N
O P
30
1
VBack door/trunk out-
put Output —Back door open (switch
closed) 0V
Back door closed (switch
open) 5V
30 3
VBack door opener
switch Input —All doors locked (SW OFF) Battery voltage
All doors unlocked (SW ON) 0V
30 4
VTrunk lid opener
switch Input —All doors locked (SW OFF) Battery voltage
All doors unlocked (SW ON) 0V
32 LG Combination switch
output 5 Output ONLighting, turn, wiper OFF
Wiper dial position 4
33 Y Combination switch
output 4 Output ON
Lighting, turn, wiper OFF
Wiper dial position 4
34 V Combination switch
output 3 Output ONLighting, turn, wiper OFF
Wiper dial position 4
35 R Combination switch
output 2
Output ONLighting, turn, wiper OFF
Wiper dial position 4
36 P Combination switch
output 1
37 1
GKey switch and igni-
tion knob switch Input OFFIntelligent Key inserted Battery voltage
Intelligent Key removed 0V
37 2
GKey switch and key
lock solenoid Input OFFKey inserted Battery voltage
Key removed 0V
38 W Ignition switch (ON) Input ON — Battery voltage
39 L CAN-H — — — —
40 P CAN-L — — — —
41 6
WTrunk key cylinder
switch Input —ON (Full unlock position) 0V
OFF (Neutral position) 5V
42 6
Y Trunk lamp switch Input OFF ON (trunk open) 0V
OFF (trunk closed) Battery voltage
Terminal
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E

BL
N
O P
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
Terminal and Reference Valu e for Intelligent Key Unit INFOID:0000000004678879
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 Terminal
Wire
Color Item Condition
Voltage (V)Approx.
Ignition
Switch
Position Operation or Conditions
1 R Steering lock solenoid
power supply LOCK — 5
2 L CAN-H — — —
3 P CAN-L — — —
4 O Intelligent Key warning
buzzer LOCKOperate door request
switch. Buzzer OFF Battery voltage
Sound buzzer 0
5 G Front door request
switch LH —Press door request switch (driver side). 0
Other than above 5
6 Y Ignition switch (ON) ON — Battery voltage
7 LG Key switch LOCK Insert mechanical key into ignition switch. Battery voltage
Remove mechanical key from ignition
switch. 0
10 *1
WCVT or A/T device
(park position switch) ONShift lever in park position. 0
Other than above Battery voltage
11 SB Power source (Fus e) — — Battery voltage
12 B Ground — — 0

BL-180< SERVICE INFORMATION >
BACK DOOR LOCK
13 V Instrument panel an-
tenna (+) signal
LOCK• Any door open
→ all door close
• Press ignition knob switch: ON (Ignition knob switch)
14 LG Instrument panel an-
tenna (-) signal
15 L Front console antenna
(+) signal
LOCK• Any door open
→ all door close
• Press ignition knob switch: ON (Ignition knob switch)
16 P Front console antenna
(-) signal
17 W Rear bumper antenna
(+) signal
LOCK Press back door request switch.
18 B Rear bumper antenna
(-) signal
19 V Front outside antenna
LH (+) signal
LOCK Press door request switch LH.
20 P Front outside antenna
LH (-) signal
22 *2
BR Key interlock solenoid — With Intelligent Key present or mechanical
key in ignition cylinder, press "PUSH" but-
ton on ignition cylinder. Battery voltage
Other than above 0
23 LG Back door open output — Back door open (switch closed) 0
Back door closed (switch open) 5
24 V Back door opener
switch —Press and hold back door switch. 0
Other than above 5
25 L Front door request
switch RH —Press front door request switch RH. 0
Other than above 5
26 SB Stop lamp switch — Depress brake pedal Battery voltage
Other than above 0
27 W Ignition knob switch — Press ignition switch. Battery voltage
Release ignition switch. 0
28 Y Unlock sensor
(driver side) —Door (driver si
de) is locked. 5
Door (driver side ) is unlocked. 0
Terminal
Wire
Color Item Condition
Voltage (V)Approx.
Ignition
Switch
Position Operation or Conditions PIIB5502J
PIIB5502J
SIIA1910J
SIIA1910J

BACK DOOR LOCK
BL-183
< SERVICE INFORMATION >
C
D E
F
G H
J
K L
M A
B BL
N
O P
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate caus e of malfunction before installing new fuse. Refer to PG-3, " Schematic " .
2.
CHECK BCM POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connectors and ground.
OK or NG OK >> GO TO 3.
NG >> Repair or replace the harness. 3.
CHECK GROUND CIRCUIT
Check continuity between BCM connector M20 terminal 67 and
ground.
OK or NG OK >> Power supply and ground circuit is OK.
NG >> Repair or replace harness.
Check Back Door Opener S witch Circuit (Without Intellig ent Key or Power Windows)
INFOID:00000000043050921.
CHECK BACK DOOR OPENER SWITCH SIGNAL 1
With CONSULT-III
1. Insure front door lock knob LH is turned to the UNLOCK position.
2. Check back door opener switch (“TRNK OPNR SW ”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
1. Insure front door lock knob LH is turned to the UNLOCK position.
2. Check voltage between BCM connector M18 terminal 30 and ground. Connector
Terminals
Power
source Condition Voltage (V) (Ap-
prox.)
(+) (-)
M18 11 Ground
ACC
power
supply Ignition
switch
ACC or ON Battery voltage
38 Ground Ignition
power
supply Ignition
switch ON
or START Battery voltage
M20 57 Ground
Battery
power
supply Ignition
switch OFF Battery voltage
70 Ground Battery
power
supply Ignition
switch OFF Battery voltage LIIA2415E
67 - Ground : Continuity should exist.
LIIA0915E
Test item Condition
TRNK OPNR SW Back door opener switch is pushed: ON
Back door opener switch is released: OFF

BL-186< SERVICE INFORMATION >
BACK DOOR LOCK
OK or NG OK >> Check the condition of harness and connector.
NG >> Replace BCM. Refer to BCS-18, " Removal and Installa-
tion of BCM " .
Check Back Door Opener Swit ch Circuit (Without Intelligent Key, with Power Windows)
INFOID:00000000043050931.
CHECK BACK DOOR OPENER SWITCH SIGNAL 1
With CONSULT-III
1. Insure front door lock knob RH is turned to the UNLOCK position.
2. Check back door opener switch (“TRNK OPNR SW”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
1. Insure front door lock knob RH is turned to the UNLOCK position.
2. Check voltage between BCM connector M18 terminal 30 and ground.
OK or NG OK >> Back door opener switch is OK.
NG >> GO TO 2 2.
CHECK BACK DOOR OPENER SWITCH CIRCUIT 1
1. Turn ignition switch OFF.
2. Disconnect BCM and back door opener switch connector.
3. Check continuity between BCM connector (A) M 18 terminal 30 and back door opener switch connector
(B) terminal 1.
4. Check continuity between BCM connector (A) M18 terminal 30
and ground. Terminals
Voltage (V)
(Approx.)
(+)
(–)
BCM connector Terminal
M18 30 Ground Battery voltage PIIB6468E
Test item Condition
TRNK OPNR SW Back door opener switch is pushed: ON
Back door opener switch is released: OFF Terminals
Door conditionVoltage (V)
(Approx.)
(+)
(–)
BCM
connector Terminal
M18 30 Ground Back door
opener switch Pushed 0
Released Battery voltage PIIB6468E
A B
Continuity
BCM connector Terminal Back door opener
switch connector Terminal
M18 30 D408 1 Yes PIIB6469E

BL-188< SERVICE INFORMATION >
BACK DOOR LOCK
OK or NG OK >> GO TO 6
NG >> Repair or replace harness. 6.
CHECK UNLOCK SENSOR FUNCTION
1. Connect front door lock actuator RH (door unlock sensor) connector.
2. Check continuity between back door opener switch connector D408 terminal 2 and ground.
OK or NG OK >> GO TO 7
NG >> Replace front door lock actuator RH (door unlock sen- sor). Refer to BL-166 .
7.
CHECK BACK DOOR OPENER SWITCH SIGNAL 2
1. Connect BCM connector.
2. Check voltage between BCM connector and ground.
OK or NG OK >> Check the condition of harness and connector.
NG >> Replace BCM. Refer to BCS-18, " Removal and Installa-
tion of BCM " .
Check Back Door Opener Switch Circuit (With Intelligent Key) INFOID:00000000043050941.
CHECK BACK DOOR OPENER SWITCH SIGNAL
With CONSULT-III
Check back door opener switch (“I-KEY TRNK”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III Front door lock actuator
RH (door unlock sensor) connec-
tor Terminal
GroundContinuity
D114 5 Yes WIIA1273E
Back door
opener switch connector Terminal
Front door lock
knob RH position Continuity
D408 2 Ground Unlock Yes
Lock No PIIB6472E
Terminals
Voltage (V)
(Approx.)
(+)
(–)
BCM connector Terminal
M18 30 Ground Battery voltage PIIB6468E
Test item Condition
I-KEY TRNK Back door opener switch is pushed: ON (momentarily)
Back door opener switch is released: OFF