Passenger Airbag Indication
The supplemental restraint system module (SRS) transmits signals on the controller area network (CAN) to the central electronic module (CEM) indicating whether the front passenger airbag is activated or not. If the central electronic module (CEM) receives information that the passenger airbag is deactivated, it transmits a signal to the passenger airbag disconnected warning lamp (PAD). The signals are transmitted on a directly connected signal cable. The warning lamp which is in the roof console, lights and remains lit while the passenger seat airbag is disconnected.
Depending on the market, if the switch for activating and deactivating the front passenger airbag is used to deactivate it, the passenger airbag disconnected (PAD) warning lamp lights.
The warning lamp goes out when the airbag is reactivated.
If an occupant weight sensor (OWS) is installed (market dependent), the passenger airbag disconnected (PAD) warning lamp lights when the airbag is deactivated. However there is an exception to this:
- The passenger airbag disconnected warning lamp will remain unlit if the occupant weight sensor (OWS) registers that the passenger seat is unoccupied. This means that the passenger airbag is deactivated.
The warning lamp goes out when the airbag is reactivated.
Reasons that the passenger airbag disconnected warning lamp lights may also be:
- communication problems between the supplemental restraint system module (SRS) and central electronic module (CEM)
- faulty function in the on/off switch for the front passenger airbag
- defective occupant weight sensor (OWS) function.