2009 NISSAN LATIO door lock

REMOTE KEYLESS ENTRY SYSTEM
BL-67
< 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-68< SERVICE INFORMATION >
REMOTE KEYLESS ENTRY 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

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
How to Perform Trouble Diagnosis INFOID:0000000004305012
1. Confirm the symptom or customer complaint.
2. Understand operation, description and function description. Refer to BL-58, " System Description " .
3. Perform the Preliminary Check. Refer to LT-11, " Preliminary Check " .
4. Check symptom and repair or replace the component.
5. Does the remote keyless entry system operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. Inspection End.
Preliminary Check INFOID:0000000004305013
CHECK BCM CONFIGURATION Configuration " .
OK or NG OK >> Refer to
BL-71, " Work Flow " .
NG >> Change BCM configuration for "KEYLESS ENTRY" to "WITH". Refer to BCS-18, " Configuration " .
CONSULT-III Function (BCM) INFOID:0000000004305014
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following. 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

BL
N
O P
Active Test
Work Flow INFOID:0000000004305015
1. Check the symptom and customer's requests.
2. Understand outline of system. Refer to BL-58, " System Description " .
3. Confirm that power door lock system operates normally. Refer to BL-22 .
4. Repair or replace any malfunctioning parts. Refer to BL-71, " Trouble Diagnosis Symptom Chart " .
5. Does remote keyless entry system operate normally? If Yes, GO TO 6. If No, GO TO 4.
6. INSPECTION END
Trouble Diagnosis Symptom Chart INFOID:0000000004305016
NOTE:
• Always check the “Work Flow” before troubleshooting. Refer to BL-71, " Work Flow " .
• Always check keyfob battery before replacing keyfob. DOOR SW-DR Indicates [ON/OFF] condition of front door switch driver side.
DOOR SW-AS Indicates [ON/OFF] condition of front door switch passenger side.
DOOR SW-RR Indicates [ON/OFF] condition of rear door switch RH.
DOOR SW-RL Indicates [ON/OFF] condition of rear door switch LH.
BACK DOOR SW Indicates [ON/OFF] condition of back door switch (hatchback).
TRNK/HAT MNTR Indicates [ON/OFF] condition of trunk room lamp switch (sedan).
CDL LOCK SW Indicates [ON/OFF] condition of lock signal from door lock and unlock switch.
CDL UNLOCK SW Indicates [ON/OFF] condition of unlock signal from door lock and unlock switch.
KEYLESS PANIC Indicates [ON/OFF] condition of panic alarm signal from keyfob.
Monitored Item Description Test Item Description
INT LAMP This test is able to check interior room lamp operation.
The interior room lamp turns on when “ON” on CONSULT-III screen is touched.
FLASHER This test is able to check right hazard reminder operation.
The right hazard lamp turns on when “ON” on CONSULT-III screen is touched.
DOOR LOCK This test is able to check door lock actuator operation.
• The all door lock actuator are locked when “ALL LOCK” on CONSULT-III screen is touched.
• The all door lock actuator are unlocked when “ALL UNLOCK” on CONSULT-III screen is touched. Symptom Diagnoses/service procedure
Reference
page
All function of remote keyless entry system do not
operate. 1. Check key switch.
BL-782. Check keyfob battery and function.
NOTE:
If the result of keyfob function check with CONSULT-III is OK, key-
fob is not malfunctioning. BL-723. Check remote keyless entry receiver.
BL-804. Refer to ID Code Entry Procedure.
BL-825. Replace BCM.
BCS-18

2. Check key switch.
BL-783. Check door switch (hatchback).
BL-744. Check door switch (sedan).
BL-765. Check ACC switch.
BL-746. Replace keyfob. Refer to ID Code Entry Procedure.
BL-827. Replace BCM.
BCS-18Door lock does not function with keyfob.
(Power door lock system is “OK”.) 1. Check keyfob function. (Lock)
NOTE:
If the result of keyfob function check with CONSULT-III is OK, key-
fob is not malfunctioning. BL-822. Replace keyfob. Refer to ID Code Entry Procedure.
BL-823. Check door switch (hatchback).
BL-744. Check door switch (sedan).
BL-765. Replace BCM.
BCS-18Door unlock does not function with keyfob
(Power door lock system is “OK”) 1. Check keyfob function. (Unlock)
BL-822. Replace keyfob. Refer to ID Code Entry Procedure.
NOTE:
If the result of keyfob function check with CONSULT-III is OK, key-
fob is not malfunctioning. BL-823. Replace BCM.
BCS-18Hazard reminder does not activate properly when
pressing lock or unlock button of keyfob. 1. Check hazard reminder mode.*
*: Hazard reminder mode can be changed.
First check the hazard reminder setting. BL-692. Check hazard function.
BL-783. Replace BCM.
BCS-18Panic alarm does not activate when panic alarm but-
ton is continuously pressed. 1. Check panic alarm mode.*
*: Panic alarm mode can be changed.
First check the panic alarm setting. BL-692. Check keyfob battery and function.
NOTE:
If the result of keyfob function check with CONSULT-III is OK, key-
fob is not malfunctioning. BL-723. Check horn function.
BL-794. Check key switch.
BL-785. Replace keyfob. Refer to ID Code Entry Procedure.
BL-826. Replace BCM.
BCS-18Auto door lock operation does not activate properly.
(All other remote keyless entry system functions are
OK.) 1. Check auto door lock operation mode.*
*: Auto door lock operation mode can be changed.
First check the auto door lock operation setting. BL-692. Replace BCM.
BCS-18Interior lamp operation does not activate properly.
1. Check interior lamp operation.
BL-792. Replace BCM.
BCS-18Symptom Diagnoses/service procedure
Reference
page

YES >> Key fob is OK.
NO >> Check remote keyless entry receiver. Refer to BL-80," Remote Keyless Entry Receiver Check " .
ACC Switch Check INFOID:0000000004305018OK >> ACC switch is OK.
NG >> Check the following. • 10A fuse [No. 20, located in fuse block (J/B)]
• Harness for open or short between BCM and fuse.
Door Switch Check (Hatchback) INFOID:0000000004305019CONSULT-III Function (BCM) " .
• When doors are open: Terminals
Ignition switch
condition Voltage (V)
(Approx.)
(+)
(–)
BCM connector Terminal
M18 11 Ground ACC or ON Battery voltage
OFF 0

REMOTE KEYLESS ENTRY SYSTEM
BL-75
< SERVICE INFORMATION >
C
D E
F
G H
J
K L
M A
B BL
N
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• When doors are closed:
Without CONSULT-III
Check voltage between BCM connector M18 or M19 terminals 12, 13, 43, 47, 48 and ground.
OK or NG OK >> Door switch circuit is OK.
NG >> GO TO 2 2.
CHECK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door switch and BCM.
3. Check continuity between door switch connector (B) B8 (front LH), B108 (front RH) terminal 2 or (C) B6
(rear LH), B116 (rear RH) terminal 1 or back door lock assembly connector (D) D405 terminal 3 and BCM
connectors (A) M18, M19 te rminals 12, 13, 43, 47 and 48.
4. Check continuity between door switch connector (B) B8 (front LH), B108 (front RH) terminal 2 or (C) B6 (rear LH), B116 (rear
RH) terminal 1 or back door lo ck assembly connector (D) D405
terminal 3 and ground.
OK or NG OK >> GO TO 3
NG >> Repair or replace harness. DOOR SW-DR : OFF
DOOR SW-AS : OFF
DOOR SW-RL : OFF
DOOR SW-RR : OFF
BACK DOOR SW : OFF
Connector Item Terminals
ConditionVoltage (V)
(Approx.)
( + ) ( – )
M18 Front door
switch RH 12
Ground Open
↓
Closed 0
↓
Battery voltage
Rear door
switch RH 13
M19 Back door
switch 43
Front door switch LH 47
Rear door switch LH 48 LIIA1041E
1 - 13 : Continuity should exist.
1 - 48 : Continuity should exist.
2 - 12 : Continuity should exist.
2 - 47 : Continuity should exist.
3 - 43 : Continuity should exist.
1 - Ground : Continuity should not exist.
2 - Ground : Continuity should not exist.
3 - Ground : Continuity should not exist. WIIA1244E

BL-76< SERVICE INFORMATION >
REMOTE KEYLESS ENTRY SYSTEM3.
CHECK DOOR SWITCHES
FRONT AND REAR DOORS
Check continuity between front door switch terminal 2 or rear door
switch terminal 1 and exposed metal of switch while pressing and
releasing switch.
BACK DOOR
Check continuity between back door lock assembly connector (back
door switch) terminals 3 and 4 while pressing (closing back door)
and releasing (opening back door) switch.
OK or NG OK >> (Front and rear doors) Switch circuit is OK.
OK >> (Back door) GO TO 4
NG >> Replace door switch. 4.
CHECK BACK DOOR SWITCH GROUND
Check continuity between back door lock assembly connector D405
terminal 4 and ground.
OK or NG OK >> Back door switch circuit is OK.
NG >> Repair or replace harness.
Door Switch Check (Sedan) INFOID:00000000043050201.
CHECK DOOR SWITCHES INPUT SIGNAL
With CONSULT-III
Check door switches ("DOOR SW-DR", "DOOR SW-AS" , "DOOR SW-RL", "DOOR SW-RR") in DATA MONI-
TOR mode with CONSULT–III. Refer to BL-69, " CONSULT-III Function (BCM) " .
• When doors are open:
• When doors are closed: Door switch is released :
Continuity should exist.
Door switch is pushed : Co ntinuity should not exist. PIIB6899E
When back door is open :
Continuity should exist.
When back door is closed : Co ntinuity should not exist. WIIA1245E
4 - Ground : Continuity should exist.
WIIA1246E
DOOR SW-DR : ON
DOOR SW-AS : ON
DOOR SW-RL : ON
DOOR SW-RR : ON
DOOR SW-DR : OFF
DOOR SW-AS : OFF