B1785

DTC B1785 OCCUPANT CLASSIFICATION SENSOR FRONT LH COLLISION DETECTION

CIRCUIT DESCRIPTION

DTC Detecting Condition:

DTC B1785 is output when the occupant classification ECU receives a collision detection signal sent by the occupant classification sensor front LH if an accident occurs.

DTC B1785 is also output when the front RH seat assembly 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 B1785 can be cleared by "Zero point calibration" and "Sensitivity check".

Therefore, If DTC B1785 is output, first perform "Zero point calibration" and "Sensitivity check".

HINT: When DTC B1150/23 is detected as a result of troubleshooting for the supplemental restraint system, perform troubleshooting for DTC B1785 of the occupant classification system.

Wiring Diagram:

Step 1 - 2:

Step 3 - 6:

Step 7 - 10:

INSPECTION PROCEDURE