Test E: DTC B2290 - Occupant Classification System Fault
PINPOINT TEST E: DTC B2290 - OCCUPANT CLASSIFICATION SYSTEM FAULTNOTE: DTC B2290 reported by the restraints control module (RCM) is informational only and indicates the presence of a fault in the occupant classification system module (OCSM). Refer to the Supplemental Restraints System (SRS) DTC Chart when DTC B2290 is reported by the RCM for diagnostic instructions. The following pinpoint test must only be used to diagnose DTC B2290 when reported by the OCSM. Diagnostic Trouble Code Tests and Associated Procedures
Normal Operation
The occupant classification sensor (OCS) system is used to classify the front passenger seat occupant in the event of a deployable impact.
The OCSM monitors the pressure sensor and circuity for faults. If the OCSM detects a fault with the sensor or circuitry, it will store DTC B2290 in memory and send a message to the RCM which stores DTC B2290 in memory and sends a message to the instrument cluster (IC) module to illuminate the air bag warning indicator.
The OCS system components (seat cushion foam pad, bladder with pressure sensor and OCSM) are calibrated to each other and are serviced as an assembly. The OCS system components are not to be installed separately. If a new OCS system component or seat cushion foam pad are needed, a new OCS system service kit (seat wiring harness, seat cushion frame, seat cushion foam pad, bladder with pressure sensor and OCSM) must be installed as an assembly.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- OCS system component
- Pressure sensing fault
- Module mounting condition
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