2006 Nissan Murano - Body Control System (Section BCS) (16 pages)
Download Body Control System (Section BCS)
Manual Description
(SRS) AIR BAG” and SEAT BELT PRE-TENSIONER” 2, sYSTEMS CONTROLLED BY BCM DIRECTLY 8, sYSTEMS CONTROLLED BY BCM AND IPDM, sYSTEMS CONTROLLED BY BCM AND COMBINATION METER 8.
SYSTEMS CONTROLLED BY BCM AND INTELLIGENT KEY UNIT 8, mAJOR COMPONENTS AND CONTROL SYSTEM 9, cAN Communication Inspection Using CONSULTII (Self-Diagnosis) 15, removal and Installation BCM 16.
Precautions for Supplemental Restraint System (SRS) AIR BAG” SEAT, the Supplemental Restraint System such as AIR BAG” and SEAT BELT PRE-TENSIONER”, used along, with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger certain, system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front.
Air bag, depending on the severity of a collision and whether the front occupants belted unbelted, information necessary to service the system safely is included in the SRS and SB section Service Manual, to avoid rendering the SRS inoperative, which could increase the risk of personal injury death, improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system.
Do not use electrical test equipment on any circuit related to the SRS unless instructed, bCM (Body Control Module) controls the operation of various electrical units installed vehicle, bCM has combination switch reading function for reading the operation of combination switches (light, wiper, washer, turn signal) in addition to a function for controlling the operation of various electrical components.
It has an interface function allowing it to receive signals from the unified meter and A/C amp, bCM reads combination switch (lighting switch, wiper switch) status, and controls various electrical component according results, bCM reads information of a maximum of 20 switches by combining 5 output terminals (OUTPUT 1-5), bCM activates transistors of output terminals (OUTPUT 1-5) periodically, and allows current flow.
At this time, transistors of output terminals (OUTPUT 1-5) are activated to allow current to flow, operation Table of BCM Combination Switches, bCM reads operation status of combination switch using combinations shown table below, headlamp has dual system switch.
Sample Operation: (When Lighting Switch 1ST Position Turned ON), when lighting switch 1ST position is turned ON, contact in combination switch turns ON, oUTPUT transistor is activated, BCM detects that voltage changes INPUT 5, when OUTPUT transistor is ON, BCM detects that voltage changes in INPUT 5, judges that lighting.
When OUTPUT transistor is activated again, BCM detects that voltage changes in INPUT 5, and recognizes that lighting switch 1ST position continuously ON, each OUTPUT terminal transistor is activated at 10 ms intervals, electrical loads are activated with time delay, combination switch reading function has operation modes shown below.
When BCM is in sleep status, transistors of OUTPUT 1 and 5 stop the output, and BCM enters low power, cAN communication allows a high rate of information transmission through the two communication lines (CAN, l line, CAN H line) connecting the various control units in the system, data but selectively reads required data only.
CAN communication, refer to LAN-32, "CAN Communication Unit", bCM changes its status depending on the operation status in order save power consumption, q With ignition switch ON, CAN communicates with other control units normally, q When ignition switch is OFF, switching to sleep mode possible.
Q Even when ignition switch is OFF, if CAN communication with IPDM E/R combination meter, active, CAN communication status active, q This status shuts down CAN communication when ignition switch turned OFF, q It transmits sleep request signal to IPDM E/R combination meter.
Q seconds after CAN communication of all control units stops, sleep transient status switched CAN, q With ignition switch OFF, CAN communication not active, q With ignition switch OFF, control performed only by BCM active, q seconds after CAN communication of all control units stops, CAN communication inactive status.
Q BCM is activated with low power mode, q When CAN communication operation is detected, it switches CAN communication status, q When a state of the following switches changes, it switches CAN communication state.
Manual Description
(SRS) AIR BAG” and SEAT BELT PRE-TENSIONER” 2, sYSTEMS CONTROLLED BY BCM DIRECTLY 8, sYSTEMS CONTROLLED BY BCM AND IPDM, sYSTEMS CONTROLLED BY BCM AND COMBINATION METER 8.
SYSTEMS CONTROLLED BY BCM AND INTELLIGENT KEY UNIT 8, mAJOR COMPONENTS AND CONTROL SYSTEM 9, cAN Communication Inspection Using CONSULTII (Self-Diagnosis) 15, removal and Installation BCM 16.
Precautions for Supplemental Restraint System (SRS) AIR BAG” SEAT, the Supplemental Restraint System such as AIR BAG” and SEAT BELT PRE-TENSIONER”, used along, with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger certain, system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front.
Air bag, depending on the severity of a collision and whether the front occupants belted unbelted, information necessary to service the system safely is included in the SRS and SB section Service Manual, to avoid rendering the SRS inoperative, which could increase the risk of personal injury death, improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system.
Do not use electrical test equipment on any circuit related to the SRS unless instructed, bCM (Body Control Module) controls the operation of various electrical units installed vehicle, bCM has combination switch reading function for reading the operation of combination switches (light, wiper, washer, turn signal) in addition to a function for controlling the operation of various electrical components.
It has an interface function allowing it to receive signals from the unified meter and A/C amp, bCM reads combination switch (lighting switch, wiper switch) status, and controls various electrical component according results, bCM reads information of a maximum of 20 switches by combining 5 output terminals (OUTPUT 1-5), bCM activates transistors of output terminals (OUTPUT 1-5) periodically, and allows current flow.
At this time, transistors of output terminals (OUTPUT 1-5) are activated to allow current to flow, operation Table of BCM Combination Switches, bCM reads operation status of combination switch using combinations shown table below, headlamp has dual system switch.
Sample Operation: (When Lighting Switch 1ST Position Turned ON), when lighting switch 1ST position is turned ON, contact in combination switch turns ON, oUTPUT transistor is activated, BCM detects that voltage changes INPUT 5, when OUTPUT transistor is ON, BCM detects that voltage changes in INPUT 5, judges that lighting.
When OUTPUT transistor is activated again, BCM detects that voltage changes in INPUT 5, and recognizes that lighting switch 1ST position continuously ON, each OUTPUT terminal transistor is activated at 10 ms intervals, electrical loads are activated with time delay, combination switch reading function has operation modes shown below.
When BCM is in sleep status, transistors of OUTPUT 1 and 5 stop the output, and BCM enters low power, cAN communication allows a high rate of information transmission through the two communication lines (CAN, l line, CAN H line) connecting the various control units in the system, data but selectively reads required data only.
CAN communication, refer to LAN-32, "CAN Communication Unit", bCM changes its status depending on the operation status in order save power consumption, q With ignition switch ON, CAN communicates with other control units normally, q When ignition switch is OFF, switching to sleep mode possible.
Q Even when ignition switch is OFF, if CAN communication with IPDM E/R combination meter, active, CAN communication status active, q This status shuts down CAN communication when ignition switch turned OFF, q It transmits sleep request signal to IPDM E/R combination meter.
Q seconds after CAN communication of all control units stops, sleep transient status switched CAN, q With ignition switch OFF, CAN communication not active, q With ignition switch OFF, control performed only by BCM active, q seconds after CAN communication of all control units stops, CAN communication inactive status.
Q BCM is activated with low power mode, q When CAN communication operation is detected, it switches CAN communication status, q When a state of the following switches changes, it switches CAN communication state.
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