SRSCM receives passenger occupant detection signal which includes passenger weight class from WCS.
SRSCM controls Telltail lamp and passenger airbag whether deploy it or not according to passenger weight class.
SRSCM periodically receives passenger occupant information.
If SRSCM receives communication error or Fault information, SRSCM turns on Airbag warning light and sets DTC.
The SRSCM sets DTC B149400 if Weight Classification System Sensor with wrong ID is detected.
Item
Detecting Condition
Possible cause
DTC Strategy
Wrong ID(mismatch)
WCS wrong ID.
Faulty SRSCM.
Enable Conditions
Ignition "ON"
Threshold Value
WCS ID mismatch
Diagnostic Time
Qualification
More than 2s (1s x 2)
De-Qualification