2010 NISSAN LATIO turn signal

BCS-4
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE)
System DescriptionINFOID:0000000005395103
BCM (body control module) controls the operation of various electrical units installed on the vehicle.
BCM FUNCTION
BCM has a combination switch reading function for reading the operation of combination switches (light, wiper,
washer, turn signal) in addition to the function for cont rolling the operation of various electrical components.
Also, it functions as an interface that receives signal s from the front air control, and sends signals to ECM
using CAN communication.
COMBINATION SWITCH READING FUNCTION
1. Description • BCM reads combination switch (light, wiper) status, and controls various electrical components accord-
ing to the results.
• BCM reads information of a maximum of 20 switches by combining five output terminals (OUTPUT 1-5)
and five input terminals (INPUT 1-5).
2. Operation description • BCM activates transistors of output terminals (OUTPU T 1-5) periodically and allows current to flow in
turn.
• If any (1 or more) of the switches are turned ON, circuit of output terminals (OUTPUT 1-5) and input ter- minals (INPUT 1-5) becomes active.
• At this time, transistors of output terminals (OUTPUT 1-5) are activated to allow current to flow. When
voltage of input terminals (INPUT 1-5) corresponding to that switch changes, interface in BCM detects
voltage change and BCM determines that switch is ON.
3. BCM - Operation table of combination switch • BCM reads operation status of combination switch by the combination shown in the following table.
SKIB7592E
Revision: January 20102010 Versa

BCM (BODY CONTROL MODULE)BCS-5
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NOTE:
Headlamp has a dual system switch.
4. Example operation: (When lighting switch 1st position is turned ON) • When lighting switch 1st position is turned ON, contact in combination switch turns ON. At this time ifOUTPUT 4 transistor is activated, BCM detects that voltage changes in INPUT 5.
• When OUTPUT 4 transistor is ON, BCM detects that voltage changes in INPUT 5, and judges lighting
switch 1st position is ON. Then BCM sends tail lamp ON signal to IPDM E/R using CAN communication.
• When OUTPUT 4 transistor is activated again, BC M detects that voltage changes in INPUT 5 and rec-
ognizes that lighting switch 1st position is continuously ON.
NOTE:
Each OUTPUT terminal transistor is activated at 10ms intervals. Therefore, after a switch is turned ON,
electrical loads are activated with a time delay. But this time delay is so short that it cannot be noticed.
5. Operation mode • Combination switch reading functi on has operation modes as follows:
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Revision: January 20102010 Versa

BCS-6
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
Normal status
• When BCM is not in sleep status, OUTPUT terminals (1-5) each turn ON-OFF every 10ms.
Sleep status
• When BCM is in sleep mode, transistors of OUTPUT 1 and 5 stop the output, and BCM enters low-cur-
rent-consumption mode. OUTPUTS (2, 3, and 4) turn ON-OFF at 60ms intervals, and receives lighting
switch input only.
CAN COMMUNICATION CONTROL
CAN communication allows a high rate of information through the two communication lines (CAN-L, CAN-H)
connecting the various control units in the system. Each control unit transmits/receives data, but selectively
reads required data only.
BCM STATUS CONTROL
BCM changes its status depending on the operation stat us in order to save power consumption.
1. CAN communication status • With ignition switch ON, CAN communicates with other control units normally.
• Control by BCM is being operated properly.
• When ignition switch is OFF, switching to sleep mode is possible.
• Even when ignition switch is OFF, if CAN communication with IPDM E/R and combination meter isactive, CAN communication status is active.
2. Sleep transient status • This status shuts down CAN communication when ignition switch is turned OFF.
• It transmits sleep request signal to IPDM E/R and combination meter.
• Two seconds after CAN communication of all control units stops, CAN communication switches to inac-tive status.
3. CAN communication inactive status • With ignition switch OFF, CAN communication is not active.
• With ignition switch OFF, control performed only by BCM is active.
• Three seconds after CAN communication of all control units stops, CAN communication switches to
inactive status.
4. Sleep status • BCM is activated with low current consumption mode.
• CAN communication is not active.
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Revision: January 20102010 Versa

BCM (BODY CONTROL MODULE)BCS-7
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• When CAN communication operation is detected, it switches to CAN communication status.
• When a state of the following switches changes , it switches to CAN communication state:
- Ignition switch
- Key switch (without Intelligent Key)
- Key switch and ignition knob switch (with Intelligent Key)
- Hazard switch
- Door lock/unlock switch (with power door locks)
- Front door switch (LH, RH)
- Rear door switch (LH, RH)
- Back door lock assembly (Hatchback)
- Trunk key cylinder switch (Sedan)
- Trunk lamp switch and trunk release solenoid (Sedan)
- Combination switch (passing, lighting switch 1st position, front fog lamp)
- Keyfob (lock/unlock signal) (with power door locks)
- Front door key cylinder switch LH
• When control performed only by BCM is required by switch, it shifts to CAN communication inactive mode.
• Status of combination switch reading function is changed.
SYSTEMS CONTROLLED BY BCM DIRECTLY
• Power door lock system (with power door locks). Refer to BL-23, "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-94, "System Description" .
• Rear wiper and washer system (Hatchback). Refer to WW-26, "
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-75, "
System Description", LT- 6 , "System
Description" or LT-28, "System Description" .
• Front fog lamp (with front fog lamps). Refer to LT-42, "
System Description" .
• Front wiper and washer system. Refer to WW-5, "
System Description" .
• Rear window defogger system. Refer to GW-51, "
System Description" .
SYSTEMS CONTROLLED BY BCM AND COMBINATION METER
• Warning chime. Refer to DI-43, "System Description" .
• Turn signal and hazard warning lamps. Refer to LT-51, "
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
Revision: January 20102010 Versa

BCS-8
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
CAN Communication System Description
INFOID:0000000005395104
Refer to LAN-7, "System Description".
Panic alarm •Key switch
•KeyfobIPDM 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 save r control • Ignition switch
• Combination switch
IPDM E/R
Headlamp Combination switch IPDM E/R
Tail lamp Combination switchIPDM 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 solenoidLuggage 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 LHCombination meter (warning buzzer)
Light warning chime • Combination switch
•Key switch
• Front door switch LHCombination 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 switchIPDM 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 controlECM
Blower fan switch signal Front air controlECM
A/C indicator signal Front air controlA/C indicator
Low tire pressure warning system Remote keyless entry receiver Combination meter System
Input Output
Revision: January 20102010 Versa

BCS-12
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
Terminal and Reference Value for BCM
INFOID:0000000005395107
Te r m i n a l Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
2BR Combination switch
input 5
Input ONLighting, turn, wiper OFF
Wiper dial position 4
3GR Combination switch
input 4 Input ONLighting, turn, wiper OFF
Wiper dial position 4
4L Combination switch
input 3
Input ONLighting, turn, wiper OFF
Wiper dial position 4
5G Combination switch
input 2
Input ONLighting, turn, wiper OFF
Wiper dial position 4
6V Combination switch
input 1
7
7BR Front door key cylin-
der switch LH (unlock) Input
OFFON (open, 2nd turn)
Momentary 1.5V
OFF (closed) 0V
8
7Y Front door key cylin-
der switch LH (lock) InputOn (open)
Momentary 1.5V
OFF (closed) 0V
9W Rear window defogger
switch Input ONRear window defogger switch
ON
0V
Rear window defogger switch
OFF 5V
10 R Defrost A/C switch sig-
nal
Input ONA/C switch OFF
5V
A/C switch ON 0V
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
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Revision: January 20102010 Versa

BCM (BODY CONTROL MODULE)BCS-13
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15 W Tire pressure warning
check connector
Input OFF
—5V
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 OFF
Goes 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 OFFON
0V
OFF 5V
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
LIIA1893E
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ZJIA0719J
Revision: January 20102010 Versa

BCS-14
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
301LGBack door/trunk out-
put Output —Back door open (switch
closed)
0V
Back door closed (switch
open) 5V
30
3LG Back door opener
switch
Input —All doors locked (SW OFF)
Battery voltage
All doors unlocked (SW ON) 0V
30
4V Trunk 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
1G Key switch and igni-
tion knob switch Input OFFIntelligent Key inserted
Battery voltage
Intelligent Key removed 0V
37
2G Key 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
6W Trunk key cylinder
switch
Input —ON (Full unlock position)
0V
OFF (Neutral position) 5V
42
6Y Trunk lamp switch Input OFF ON (trunk open)
0V
OFF (trunk closed) Battery voltage
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
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Revision: January 20102010 Versa