2009 NISSAN LATIO ignition

System Description " .
• Remote keyless entry system. Refer to BL-58, " System Description " .
• Power window system (with power windows). Refer to GW-19, " System Description " .
NOTE
• Sunroof system (with sunroof). Refer to RF-11, " System Description " .
NOTE
• Room lamp timer. Refer to LT-91, " System Description " .
• Rear wiper and washer system (Hatchback). Refer to WW-25, " System Description " .
NOTE:
Power supply only. No system control.
SYSTEMS CONTROLLED BY BCM AND IPDM E/R
• Panic system. Refer to BL-58, " System Description " .
• Vehicle security (theft warning) system. Refer to BL-219, " System Description " .
• NVIS(NATS) system. Refer to BL-248, " System Description " .
• Headlamp, tail lamp and battery saver control systems. Refer to LT-73, " System Description " ,
LT-4, " System
Description " or
LT-25, " System Description " .
• Front fog lamp (with front fog lamps). Refer to LT-39, " System Description " .
• Front wiper and washer system. Refer to WW-3, " System Description " .
• Rear window defogger system. Refer to GW-51, " System Description " .
SYSTEMS CONTROLLED BY BCM AND COMBINATION METER
• Warning chime. Refer to DI-42, " System Description " .
• Turn signal and hazard warning lamps. Refer to LT-48, " System Description " .
SYSTEMS CONTROLLED BY BCM AND INTELLIGENT KEY UNIT (WITH INTELLIGENT KEY)
• Intelligent Key system. Refer to BL-88, " System Description " .
MAJOR COMPONENTS AND CONTROL SYSTEM
System Input Output
Remote keyless entry system (with
power door locks) Remote keyless entry receiver
(keyfob) • All door locking actuators
• Turn signal lamp (LH, RH)
• Combination meter (turn signal lamp)
Intelligent Key system (with Intelligent
Key) Intelligent Key unit• All door locking actuators
• Turn signal lamp (LH, RH)
• Combination meter (turn signal lamp)
Power door lock system (with power
door locks) Front power door lock/unlock
switch (LH, RH) All door locking actuators
Power supply (IGN/RAP) to power
window (with power windows) Ignition retained power supply Power supply to power window and sunroof system
Power supply (BAT) to power window
(with power windows) Battery power supply Power supply to power window and sunroof system

BCS
N
O P
CAN Communication System Description INFOID:0000000004306834
Refer to LAN-8, " System Description " .
Panic alarm
• Key switch
• Keyfob IPDM E/R
Vehicle security system • All door switches
• Keyfob
• Door lock/unlock switch
• Trunk key cylinder switch (Se-
dan)
• Front door key cylinder switch LH • IPDM/ER
• Security indicator lamp
Battery saver control • Ignition switch
• Combination switch IPDM E/R
Headlamp Combination switch IPDM E/R
Tail lamp Combination switch IPDM E/R
Front fog lamp (with front fog lamps) Combination switch IPDM E/R
Turn signal lamp Combination switch • Turn signal lamp
• Combination meter
Hazard lamp Hazard switch • Turn signal lamp
• Combination meter
Room lamp timer • Key switch
• Keyfob
• Main power window and door lock/unlock switch
• Front door switch LH
• All door switch Interior room lamp
Back door switch signal (Hatchback) Back door lock assembly Luggage room lamp
Back door lock signal (Hatchback) Back door lock assembly Back door opener
Trunk lamp switch signal (Sedan) Trunk lamp switch and trunk re-
lease solenoid Luggage room lamp
Trunk lid opener signal (Sedan) Trunk lamp switch and trunk re-
lease solenoid Trunk lid opener
Key warning chime • Key switch
• Front door switch LH Combination meter (warning buzzer)
Light warning chime • Combination switch
• Key switch
• Front door switch LH Combination meter (warning buzzer)
Seat belt warning chime • Seat belt buckle switch LH
• Ignition switch Combination meter (warning buzzer)
Front wiper and washer system • Combination switch
• Ignition switch IPDM E/R
Rear window defogger Rear window defogger switch IPDM E/R
Rear wiper and washer system
(Hatchback) • Combination switch
• Ignition switch Rear wiper motor
A/C switch signal Front air control ECM
Blower fan switch signal Front air control ECM
A/C indicator signal Front air control A/C indicator
Low tire pressure warning system Remote keyless entry receiver Combination meter System Input Output

BCS
N
O P
Terminal and Reference Value for BCM
INFOID:0000000004306837
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

BCM (BODY CONTROL MODULE)
BCS-13
< SERVICE INFORMATION >
C
D E
F
G H
I
J
L
M A
B BCS
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

BCS
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
BCM Power Supply and Gr ound Circuit Inspection INFOID:0000000004306838OK >> 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 " .
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

OK >> GO TO 3.
NG >> Repair or replace the harness. OK >> Power supply and ground circuit is OK.
NG >> Repair or replace harness.
CONSULT-III Function (BCM) INFOID:0000000004306839
CONSULT-III can display each diagnostic item us ing the diagnostic test modes shown following.
ITEMS OF EACH PART
NOTE:
CONSULT-III will only display systems the vehicle possesses. M20
57 Ground
Battery
power
supply Ignition
switch
OFF Battery voltage
70 Ground Battery
power
supply Ignition
switch OFF Battery voltage
Connector
Terminals
Power
source Condition Voltage (V) (Ap-
prox.)
(+) (-) System and item
CONSULT-III dis-
play Diagnostic test mode (Inspection by part)
WORK
SUPPORT SELF
−
DIAG RE- SULTS CAN DIAG
SUPPORT MNTR DATA
MONITOR ECU
PART
NUMBER AC-
TIVE
TEST CON-
FIGU-
RATION
BCM BCM × × × × ×
Power door lock sys-
tem DOOR LOCK
× × ×
Rear defogger REAR DEFOG-
GER × ×
Warning chime BUZZER × ×

BL
N
O P
CONTENTS
BODY, LOCK & SECURITY SYSTEM
SERVICE INFORMATION .. ..........................4
PRECAUTIONS .............................................. .....4
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
4
Precaution Necessary fo r Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
4
Precaution for Procedure without Cowl Top Cover ......5
Precaution for Work ............................................ ......5
PREPARATION .............................................. .....6
Special Service Tool ........................................... ......6
Commercial Service Tool .................................... ......6
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES ........................ ........................................7
Work Flow ........................................................... ......7
Generic Squeak and Rattle Troubleshooting ...... ......9
Diagnostic Worksheet ......................................... ....11
HOOD ............................................................. ....13
Fitting Adjustment ............................................... ....13
Removal and Installation .........................................14
Removal and Installation of Hood Lock Control .. ....15
Hood Lock Control Inspec tion .................................17
RADIATOR CORE SUPPORT ....................... ....19
Removal and Installation .........................................19
FRONT FENDER ............................................ ....21
Removal and Installation .........................................21
POWER DOOR LOCK SYSTEM .................... ....22
Component Parts and Harness Connector Loca-
tion ...................................................................... ....
22
System Description ............................................. ....23
CAN Communication System Description ........... ....25
Schematic ........................................................... ....26
Wiring Diagram - D/LOCK - ................................. ....27
Schematic ........................................................... ....31
Wiring Diagram - D/LOCK - ................................. ....32 Terminal and Reference
Value for BCM ..................37
Work Flow ............................................................ ....41
CONSULT-III Function (B CM) .................................41
Trouble Diagnosis Symptom Chart ...................... ....43
BCM Power Supply and Ground Circuit Inspection ....43
Door Switch Check (Hatchback) .......................... ....44
Door Switch Check (Sedan) ................................ ....47
Key Switch (Insert) Check ................................... ....48
Door Lock and Unlock Switch Check .................. ....49
Front Door Lock Assembly LH (Actuator) Check .....52
Door Lock Actuator Check (Front RH and Rear
LH/RH) ................................................................. ....
53
Front Door Key Cylinder S witch LH Check ..............54
Passenger Select Unlock Relay Circuit Inspection
(With Intelligent Key) ........................................... ....
55
REMOTE KEYLESS ENTRY SYSTEM ............. 58
Component Parts and Harness Connector Loca-
tion ....................................................................... ....
58
System Description .............................................. ....58
CAN Communication System Description ........... ....60
Schematic ............................................................ ....61
Wiring Diagram - KEYLES - ................................ ....62
Terminal and Reference Value for BCM ..................65
How to Perform Trouble Diagnosis ...................... ....69
Preliminary Check ............................................... ....69
CONSULT-III Function (B CM) .................................69
Work Flow ............................................................ ....71
Trouble Diagnosis Symptom Chart ...................... ....71
Keyfob Battery and Function Check .................... ....72
ACC Switch Check .............................................. ....74
Door Switch Check (Hatchback) .......................... ....74
Door Switch Check (Sedan) ................................ ....76
Key Switch (Insert) Check ................................... ....78
Hazard Function Check ....................................... ....78
Horn Function Check ........................................... ....79
Interior Lamp and Ignition Keyhole Illumination
Function Check .................................................... ....
79
Remote Keyless Entry Rece iver Check ...................80
Keyfob Function (Lock) Check ............................ ....82

BL
N
O P
System Description
INFOID:0000000004304987
Power is supplied at all times
• through 40A fusible link (letter g , located in the fuse and fusible link box)
• to BCM terminal 70
• through 10A fuse [No. 8, located in the fuse block (J/B)]
• to BCM terminal 57
• through 10A fuse [No. 14, located in the fuse block (J/B)]
• to key switch terminal 2 (without Intelligent Key system)
• through 10A fuse [No. 31, located in the fuse block (J/B)]
• to key switch and ignition knob switch terminals 2 and 4 (with Intelligent Key system).
When key switch is ON (key is inserted in ignition key cylinder), power is supplied
• through key switch terminal 1 (without Intelligent Key system) or key switch and ignition knob terminal 1 (with Intelligent Key system)
• to BCM terminal 37.
Ground is supplied
• to BCM terminal 67
• through body grounds M57 and M61.
LOCK OPERATION When the door is locked with main power window and door lock/unlock switch, ground is supplied
• to BCM terminal 45
• through main power window and door lock and unlock switch terminals 17 and 18
• through body grounds M57 and M61.
When the door is locked with power window and door lock/unlock switch RH, ground is supplied
• to BCM terminal 45
• through power window and door lock and unlock switch RH terminals 1 and 3
• through body grounds M57 and M61.
When the door is locked with front door ke y cylinder switch LH, ground is supplied
• to BCM terminal 8
• through front door key cylinder switch LH terminals 1 and 2
• through body grounds M57 and M61.
UNLOCK OPERATION When the door is unlocked with main power window and door lock/unlock switch, ground is supplied
• to BCM terminal 46
• through main power window and door lock/unlock switch terminals 6 and 17
• through body grounds M57 and M61.
When the door is unlocked with power window and door lock/unlock switch RH, ground is supplied
• to BCM terminal 46
• through power window and door lock and unlock switch RH terminals 2 and 3
• through body grounds M57 and M61.
When the door is unlocked with front door ke y cylinder switch LH, ground is supplied
• to BCM terminal 7
• through front door key cylinder switch LH terminals 2 and 3
• through body grounds M57 and M61.
When the front door switch LH is ON (door is OPEN), ground is supplied
• to BCM terminal 47
• through front door switch LH terminal 2
• through front door switch LH case ground.
When the front door switch RH is ON (door is OPEN), ground is supplied
• to BCM terminal 12
• through front door switch RH terminal 2
• through front door switch RH case ground. 10. Key switch and key lock solenoid M27
(without Intelligent key) 11. Main power window and door lock/un-
lock switch D7, D8
Power window and door lock/unlock
switch RH D105 12. Fuse block (with Intelligent Key)
(view with instrument panel LH re-
moved)
13. Passenger select unlock relay M2 (with Intelligent Key) 14. Back door lock assembly (back door
switch) D405 (hatchback view with back
door open) 15. Combination meter M24