Infiniti G35 (V35) Sedan. Manual — part 198
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BCS
SIGNAL BUFFER SYSTEM
BCS-9
< FUNCTION DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
SIGNAL BUFFER SYSTEM
System Diagram
INFOID:0000000000963866
System Description
INFOID:0000000000963867
OUTLINE
BCM has the signal transmission function that outputs/transmits each input/received signal to each unit.
Signal transmission function list
JPMIA0070GB
Signal name
Input
Output
Description
• Ignition switch ON signal
• Ignition switch signal
Push-button ignition switch
(push switch)
• IPDM E/R (CAN)
• Driver seat control unit (CAN)
Inputs the push-button ignition
switch (push switch) signal and
transmits the ignition switch sta-
tus judged with BCM via CAN
communication.
Door switch signal
Any door switch
• Combination meter (via uni-
fied meter and A/C amp.)
(CAN)
• IPDM E/R (CAN)
• Driver seat control unit (CAN)
• AV control unit (CAN)
Inputs the door switch signal
and transmits it via CAN com-
munication.
Trunk switch signal
Trunk room lamp switch
• Combination meter (via uni-
fied meter and A/C amp.)
(CAN)
• AV control unit (CAN)
Inputs the trunk room lamp
switch signal and transmits the
trunk switch signal via CAN
communication.
Oil pressure switch signal
IPDM E/R (CAN)
Combination meter (via unified
meter and A/C amp.) (CAN)
Transmits the received oil pres-
sure switch signal via CAN
communication.
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BCS-10
< FUNCTION DIAGNOSIS >
POWER CONSUMPTION CONTROL SYSTEM
POWER CONSUMPTION CONTROL SYSTEM
System Diagram
INFOID:0000000000963868
System Description
INFOID:0000000000963869
OUTLINE
• BCM incorporates a power saving control function that reduces the power consumption according to the
vehicle status.
• BCM switches the status (control mode) by itself with the power saving control function. It performs the sleep
request to each unit [IPDM E/R, combination meter (unified meter and A/C amp.) and driver seat control unit]
that operates with the ignition switch OFF.
Normal mode (wake-up)
- CAN communication is normally performed with other units
- Each control with BCM is operating properly
CAN communication sleep mode (CAN sleep)
- CAN transmission is stopped
- Control with BCM only is operating
Low power consumption mode (BCM sleep)
- Low power consumption control is active
- CAN transmission is stopped
LOW POWER CONSUMPTION CONTROL WITH BCM
BCM reduces the power consumption with the following operation in the low power consumption mode.
• The reading interval of the each switches changes from 10 ms interval to 60 ms interval.
Sleep mode activation
• BCM receives the sleep-ready signal (ready) from IPDM E/R and unified meter and A/C amp. via CAN com-
munication.
• BCM transmits the sleep wake up signal (sleep) to each unit when all of the CAN sleep conditions are ful-
filled.
• Each unit stops the transmission of CAN communication with the sleep wake up signal. BCM is in CAN com-
munication sleep mode.
• BCM is in the low power consumption mode and perform the low power consumption control when all of the
BCM sleep conditions are fulfilled with CAN sleep condition.
JPMIA0069GB
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BCS
POWER CONSUMPTION CONTROL SYSTEM
BCS-11
< FUNCTION DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
Sleep condition
Wake-up operation
• BCM changes from the low power consumption mode to the CAN communication sleep mode when the any
of the BCM wake-up conditions is fulfilled. Only the control with BCM is activated.
• BCM transmits the sleep wake up signal (wake up) to each unit when any of the CAN wake-up conditions is
fulfilled. It changes from the low power consumption mode or the CAN communication sleep mode to the
normal mode.
• Each unit starts the transmission of CAN communication with the sleep wake up signal. In addition, the uni-
fied meter and A/C amp. transmits the wake up signal to BCM via CAN communication to report the CAN
communication start.
Wake-up condition
Component Parts Location
INFOID:0000000000963870
CAN sleep condition
BCM sleep condition
• Receiving the sleep-ready signal (ready) from all units
• Ignition switch: OFF
• Vehicle security system and panic alarm: Not operation
• Warning lamp: Not operation
• Intelligent Key system buzzer: Not operation
• Trunk room lamp switch status: No change
• Brake switch: OFF
• Key slot (card switch) status: No change
• Turn signal indicator lamp: Not operation
• Exterior lamp: OFF
• Door lock status: No change
• CONSULT-III communication status: Not communication
• Meter display signal: Non-transmission
• Steering lock operation: Not operation
• Door switch status: No change
• Rear window defogger: OFF
• Interior room lamp battery saver: Time out
• RAP system: OFF
• Power window switch communication: No transmission
• Push-button ignition switch illumination: OFF
• Infiniti Vehicle Immobilizer System (IVIS) - NATS: Not opera-
tion
• Remote keyless entry receiver communication status: No com-
munication
• Tire pressure monitor system (TPMS) - AIR PRESSURE
MONITOR: Stop
BCM wake-up condition
CAN wake-up condition
• Trunk lid opener switch: OFF
→
ON
• Power window switch communication: Receiving
• Remote keyless entry receiver: Receiving
• Receiving the sleep-ready signal (Not-ready) from any units
• Key slot (key switch): OFF
→
ON, ON
→
OFF
• Push-button ignition switch (push switch): OFF
→
ON
• Hazard switch: OFF
→
ON
• PASSING switch: OFF
→
ON, ON
→
OFF
• TAIL LAMP switch: OFF
→
ON
• Driver door switch: OFF
→
ON, ON
→
OFF
• Passenger door switch: OFF
→
ON, ON
→
OFF
• Rear RH door switch: OFF
→
ON, ON
→
OFF
• Rear LH door switch: OFF
→
ON, ON
→
OFF
• Trunk room lamp switch: OFF
→
ON, ON
→
OFF
• Driver door request switch: OFF
→
ON
• Passenger door request switch: OFF
→
ON
• Trunk request switch: OFF
→
ON
• Stop lamp switch 2 signal: ON
• Clutch interlock switch: OFF
→
ON
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BCS-12
< FUNCTION DIAGNOSIS >
POWER CONSUMPTION CONTROL SYSTEM
1.
BCM
2.
IPDM E/R
3.
Unified meter and A/C amp.
4.
Driver seat control unit
A.
Dash side lower (passenger side)
B.
Engine room dash panel (RH)
C.
Behind Cluster lid C
D.
Backside of the seat cushion (driver
seat)
JPMIA0072ZZ
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