Pathfinder 4WD V6-4.0L (VQ40DE) (2006)
5. Operation mode
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Combination switch reading function has operation modes as follows:
Normal status
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When BCM is not in sleep status, OUTPUT terminals (1-5) each turn ON-OFF every 10 ms.
Sleep status
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When BCM is in sleep mode, transistors of OUTPUT 1 and 5 stop the output, and BCM enters low-current-consumption mode. OUTPUTS (2,
3, and 4) turn ON-OFF at 60 ms 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 status in order to save power consumption.
1. CAN communication status
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With ignition switch ON, CAN communicates with other control units normally.
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Control by BCM is being operated properly.
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When ignition switch is OFF, switching to sleep mode is possible.
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Even when ignition switch is OFF, if CAN communication with IPDM E/R and combination meter is active, CAN communication status is
active.
2. Sleep transient status
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This status shuts down CAN communication when ignition switch is turned OFF.
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It transmits sleep request signal to IPDM E/R and combination meter.
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Two seconds after CAN communication of all control units stops, CAN communication switches to inactive status.
3. CAN communication inactive status
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With ignition switch OFF, CAN communication is not active.
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With ignition switch OFF, control performed only by BCM is active.
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Three seconds after CAN communication of all control units stops, CAN communication switches to inactive status.
4. Sleep status
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BCM is activated with low current consumption mode.
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CAN communication is not active.