General Information

B1450 OCS (Occupant Classification System) Wrong ID

General Information



General Description

On JB (11MY) vehicles, safety sensing system for occupant detection and classification has been changed from Occupant Classification (OC) to Body Sense.
The OC system monitors a front passenger seat for occupancy by means of a pressure sensitive matrix sensor, but the Body Sense system detects seat occupancy and classifies the occupant by using an electrical field sensor. Unlike the pressure sensitive matrix sensor, the electrical field sensor is very sensitive to moisture and electronic devices and therefore please give customers advice not to put any electronic devices on or around the passenger seat cushions and also spill water or beverage on the seat cushions.
In order to make normal activation of passenger airbag system, SRSCM detects DTC(s) for the Passenger side Body Detection System.
If the seat is occupied, Body sense sensor detects how passenger weighs and send signal to ACU via KWP2000 Communication Line.
ACU recognizes the signal as 2 (two) different classifications; that is, CLASS 1 (Empty and CRS), CLASS 2 (5th% female).
With these signal, ACU determines whether it needs to deploy PAB (Passenger Airbag) or not.

CAUTION:
- If Body Sense has wrong vehicle ID, the airbag warning lamp may be illuminated with DTC B1450.
- If airbag warning lamp is turned on, follow the directions outlined in the below Service Procedure first before repairing the airbag system.

DTC Description

The SRSCM sets DTC B1450 if Passenger side Body Sense sensor Mat and ECU with wrong ID is detected

DTC Detecting Condition





Schematic Diagram