Normal Operation
The occupant classification sensor (OCS) system is used to classify the front passenger seat occupant in the event of a deployable impact. Refer to Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) .
The occupant classification system module (OCSM) monitors the 4 OCS weight sensor bolts and circuity for faults. If the OCSM detects a fault with the sensor(s) or circuitry, it will store diagnostic trouble code (DTC) B2290 in memory and send a message to the restraints control module (RCM). The RCM will store DTC B2290 in memory and send a message to the instrument cluster module to illuminate the air bag warning indicator.
| Fault PIDsa | Description | Fault Trigger Condition |
|---|---|---|
| 2290_0_OD and 2290_0_CM | Passenger Seat OCS Sensor No. 4 Circuit Short to Battery | When the occupant classification system module (OCSM) senses a short to voltage on the OCS weight sensor bolt No. 4 circuits, a fault will be indicated. |
| 2290_1_OD and 2290_1_CM | Passenger Seat OCS Sensor No. 4 Circuit Short to Ground | When the OCSM senses a short to ground on the OCS weight sensor bolt No. 4 circuits, a fault will be indicated. |
| 2290_2_OD and 2290_2_CM | Passenger Seat OCS Sensor No. 4 Comm. Fault/Open | When the OCSM senses a communication fault or open circuits on the OCS weight sensor bolt No. 4, a fault will be indicated. |
| 2290_3_OD and 2290_3_CM | Passenger Seat OCS Sensor No. 4 Internal Fault | When the OCSM senses a internal fault with the OCS weight sensor bolt No. 4, a fault will be indicated. |
| 2290_4_OD and 2290_4_CM | Passenger Seat OCS Sensor No. 3 Circuit Short to Battery | When the OCSM senses a short to voltage on the OCS weight sensor bolt No. 3 circuits, a fault will be indicated. |
| 2290_5_OD and 2290_5_CM | Passenger Seat OCS Sensor No. 3 Circuit Short to Ground | When the OCSM senses a short to ground on the OCS weight sensor bolt No. 3 circuits, a fault will be indicated. |
| 2290_6_OD and 2290_6_CM | Passenger Seat OCS Sensor No. 3 Comm. Fault/Open | When the OCSM senses a communication fault or open circuits on the OCS weight sensor bolt No. 3, a fault will be indicated. |
| 2290_7_OD and 2290_7_CM | Passenger Seat OCS Sensor No. 3 Internal Fault | When the OCSM senses a internal fault with the OCS weight sensor bolt No. 3, a fault will be indicated. |
| 2290_8_OD and 2290_8_CM | Passenger Seat OCS Sensor No.2 Circuit Short to Battery | When the OCSM senses a short to voltage on the OCS weight sensor bolt No. 2 circuits, a fault will be indicated. |
| 2290_9_OD and 2290_9_CM | Passenger Seat OCS Sensor No.2 Circuit Short to Ground | When the OCSM senses a short to ground on the OCS weight sensor bolt No. 2 circuits, a fault will be indicated. |
| 2290_10_OD and 2290_10_CM | Passenger Seat OCS Sensor No.2 Comm. Fault/Open | When the OCSM senses a communication fault or open circuits on the OCS weight sensor bolt No. 2, a fault will be indicated. |
| 2290_11_OD and 2290_11_CM | Passenger Seat OCS Sensor No.2 Internal Fault | When the OCSM senses a internal fault with the OCS weight sensor bolt No. 2, a fault will be indicated. |
| 2290_12_OD and 2290_12_CM | Passenger Seat OCS Sensor No.1 Circuit Short to Battery | When the OCSM senses a short to voltage on the OCS weight sensor bolt No. 1 circuits, a fault will be indicated. |
| 2290_13_OD and 2290_13_CM | Passenger Seat OCS Sensor No.1 Circuit Short to Ground | When the OCSM senses a short to ground on the OCS weight sensor bolt No. 1 circuits, a fault will be indicated. |
| 2290_14_OD and 2290_14_CM | Passenger Seat OCS Sensor No.1 Comm. Fault/Open | When the OCSM senses a communication fault or open circuits on the OCS weight sensor bolt No. 1 circuits, a fault will be indicated. |
| 2290_15_OD and 2290_15_CM | Passenger Seat OCS Sensor No.1 Internal Fault | When the OCSM senses a internal fault with the OCS weight sensor bolt No. 1 circuits, a fault will be indicated. |
a Fault PIDs that end in OD indicate an on-demand status and are associated with on-demand DTC B2290. Fault PIDs that end in CM indicate continuous monitor status and are associated with continuous DTC B2290.
This pinpoint test is intended to diagnose the following:
- Damaged wiring, terminals or connectors
- Faulted OCS system component