korando 2010.10
0000-00
AIR BAG SYSTEM
3) CAN Communication Interface (FIS and SIS)
The CAN communication interface uses PWM for the supply current and the current loop and
communicates with the SDM to transmit information. The serial communication and power for
the satellite are supplied through the communication line.
Stage FIS SIS
Initial stage Tracking/Check (Self test) Same as FIS
Normal operation Checks the FIS condition and sends the
result as "OK' or 'NOK", and also sends the
"severe level" of the crash.
Same as FIS
Voltage The FIS hardware reset performed under 5
V, communication voltage low
Same as FIS
Fault The fault is found in the current ignition
cycle but the fault is deactivated in the next
ignition cycle.
Multiple faults can be
found and deactivated in
the same ignition cycle.
The FIS moves to the initial stage if 'leakage to GND' is occurred in normal operating stage to
shut down the power and prevent abnormal operation.
FIS: Front Impact Sensor
SIS: Side Air bag Sensor
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