DTC B1545: Occupant classification-ECU for Power Supply Circuit DTC B1546: Occupant classification-ECU for Communication System

CIRCUIT OPERATION
The load data from the occupant classification sensor is classified with the occupant classification-ECU, and its classified information is send to SRS-ECU. The SRS-ECU determines the air bag deployment based on this classified information, and controls the power supply circuit to the inflator.
DTC SET CONDITIONS
These DTCs are set if communication between the occupant classification-ECU and the SRS-ECU is not possible or communication is faulty.
TROUBLESHOOTING HINTS
Damaged wiring harnesses or connectors
Malfunction of the occupant classification-ECU
Malfunction of the SRS-ECU