Nissan GT-R. Instruction — part 51
BCS-10
< SYSTEM DESCRIPTION >
POWER CONSUMPTION CONTROL SYSTEM
POWER CONSUMPTION CONTROL SYSTEM
System Diagram
INFOID:0000000009160234
System Description
INFOID:0000000009160235
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 and combination meter) 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 combination meter via CAN communica-
tion.
• 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.
JSMIA0050GB
BCS
POWER CONSUMPTION CONTROL SYSTEM
BCS-11
< SYSTEM DESCRIPTION >
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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 com-
bination meter transmits the wake up signal to BCM via CAN communication to report the CAN communica-
tion start.
Wake-up condition
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 chime: Not operation
• Intelligent Key system buzzer: Not operation
• Trunk room lamp switch status: No change
• Stop lamp switch: OFF
• Key slot (card switch) status: No change
• Turn signal indicator lamp: Not operation
• Exterior lamp: OFF
• Door lock status: No change
• CONSULT communication status: Not communication
• Meter display signal: Non-transmission
• Door switch status: No change
• Rear window defogger: OFF
• Interior room lamp battery saver: Time out
• RAP system: OFF
• Push-button ignition switch illumination: OFF
• Nissan Vehicle Immobilizer System (NVIS) - NATS: Not opera-
tion
• Remote keyless entry receiver communication status: No com-
munication
• LOCK indicator lamp: OFF
• ACC indicator lamp: OFF
• ON indicator lamp: OFF
BCM wake-up condition
CAN wake-up condition
• Trunk lid opener switch: OFF
→
ON
• Remote keyless entry receiver: Receiving
• Door lock and unlock switch:
NEUTRAL
→
LOCK, NEUTRAL
→
UNLOCK
• 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
• Trunk room lamp switch: OFF
→
ON, ON
→
OFF
• Driver door request switch: OFF
→
ON
• Passenger door request switch: OFF
→
ON
• Trunk lid request switch: OFF
→
ON
• Stop lamp switch signal: ON
BCS-12
< SYSTEM DESCRIPTION >
POWER CONSUMPTION CONTROL SYSTEM
Component Parts Location
INFOID:0000000009160236
1.
Combination meter
2.
BCM
3.
IPDM E/R
A.
Dash side lower (passenger side)
B.
Engine room dash panel (RH)
JPMIA1144ZZ
BCS
POWER SUPPLY AND GROUND CIRCUIT
BCS-13
< DTC/CIRCUIT DIAGNOSIS >
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DTC/CIRCUIT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000009160266
1.
CHECK FUSE AND FUSIBLE LINK
Check that the following fuse and fusible link are not blown.
Is the fuse fusing?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is
blown.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BCM connectors.
3.
Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
Signal name
Fuse and fusible link No.
Battery power supply
I
10
Terminals
Voltage
(Approx.)
(+)
(
−
)
BCM
Ground
Connector
Terminal
M118
1
Battery voltage
M119
11
BCM
Ground
Continuity
Connector
Terminal
M119
13
Existed
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