DTC B1778 Belt Tension Sensor Control Module: DTC Detecting Condition
WARNING: This page is about a different car, the 2015 Subaru Outback and 2015 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
- Passenger's seat belt tension sensor is faulty.
- Airbag main harness circuit is open or shorted.
- Occupant detection control module is faulty.
For the diagnostic procedure, refer to DTC B1773. <Ref. to DTC B1773 BELT TENSION SENSOR CIRCUIT OPEN , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>