The occupant classification sensor power supply circuit consists of the occupant classification ECU and occupant classification sensors.
DTC B1793 is recorded when a malfunction is detected in the occupant classification sensor power supply circuit.
The occupant classification ECU receives a line short circuit signal, an open circuit signal, a short circuit to ground signal or a short circuit to B+ signal in the occupant classification sensor power supply circuit for 2 seconds.
When DTC B1650/32 is detected as a result of troubleshooting for the airbag system, check the DTCs stored in the occupant classification ECU. When DTC B1793 is output, perform troubleshooting for the DTC.
(c) Check that the connectors are properly connected to the 4 occupant classification sensors and occupant classification ECU.
(d) Disconnect the connectors from the 4 occupant classification sensors and occupant classification ECU.
(a) Connect the connectors to the occupant classification ECU and the 4 occupant classification sensors.
DTC B1793 is not output.
Codes other than DTC B1793 may be output at this time, but they are not related to this check.