DTC B1786: Front Occupant Classification Sensor RH Collision Detection: Description

DTC B1786 is output when the occupant classification ECU receives a collision detection signal sent by the front occupant classification sensor RH if an accident occurs.

DTC B1786 is also output when the front seat assembly RH is subjected to a strong impact, even if an actual accident does not occur.

However, when the occupant classification ECU outputs a collision detection signal, even if the vehicle is not in a collision, DTC B1786 can be cleared by "zero point calibration" and "sensitivity check".

Therefore, if DTC B1786 is output, first perform "zero point calibration" and "sensitivity check".

DTC DETECTION CONDITION TABLE

DTC No.	DTC Detection Condition	Trouble Area
B1786	Front seat assembly RH malfunction Occupant classification ECU malfunction Front occupant classification sensor RH sensed large load	Occupant classification ECU Front seat assembly RH (Front occupant classification sensor RH)

HINT:

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 B1786 is output, perform troubleshooting for the DTC.