Occupant Detection Sensor (ODS) Or Occupant Classification Module (OCM)
| Refer to COMPONENT INDEX . |
ODS
All international released vehicles are equipped with an ODS. The ODS is located on the bottom of the seat cushion foam of the passenger side front seat and each seating position in the second row. The ODS is a resistive pressure switch. The ODS closes when a pre-programmed load is placed on the seat. The ODS is used to trigger a seat belt reminder if a passenger is detected on the seat. The ODS does not affect the level of airbag deployment.
The ODS acts as a simple switch to detect loads placed upon the passenger side front seat cushion. The sensor circuits are connected to and monitored by the ORC whenever the status of the ignition is On. The ORC uses an algorithm logic in monitoring the changing states of the sensor input to determine whether the seat cushion load is static or dynamic.
For EMEA markets, all three rear seating positions are equipped with ODS which enables the ORC to determine if a rear seat is occupied. If the seat is occupied and the seat belt has not been buckled, the seat belt reminder for the occupied rear seat is illuminated in the IPC.
The ORC micro-controller continuously monitors all of the SRS electrical circuits to determine the system status and readiness. If the ORC detects a monitored system fault, it sets a DTC. However, because the ODS input is only used for control of the passenger belt alert feature, which has no effect on SRS component features or functions, the airbag indicator is NOT illuminated in response to a detected ODS circuit fault.
The ODS receives source current and a clean ground through dedicated sensor plus and minus circuits from the ORC. The ORC then sends the appropriate sensor status information over the CAN data bus to the IPC, which uses this information as an additional logic input used for control of the seat belt indicator and the passenger belt alert feature.
The ODS cannot be adjusted or repaired, and must be replaced if damaged or ineffective.
OCM
For information about the OCM. Refer to MODULE, OCCUPANT CLASSIFICATION (OCM), DESCRIPTION AND OPERATION .