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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 1615 (Supplemental Restraint System) >> Diagnostic Tests >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test I: DTC B2290 - Occupant Classification System Fault >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

The occupant classification sensor (OCS) system is used to classify the front passenger seat occupant in the event of a deployable impact. The OCS system components (seat cushion foam pad, bladder with pressure sensor and occupant classification system module [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, OCS system component or seat cushion foam pad are needed, a new OCS system service kit (seat cushion foam pad, bladder with pressure sensor and OCSM) must be installed as an assembly.

The restraints control module (RCM) checks with the OCSM for faults. If the OCSM detects one of the following faults on any of the OCS circuits, it will store DTC B2290 in memory and, depending on the fault, flash a LFC on the air bag warning indicator.

Fault PIDsa Description Fault Trigger Condition
2290_24_OD and 2290_24_CM OCS Sensing Element Fault, Front Pass. Side When the OCSM senses a fault with the bladder pressure sensor circuits, a fault will be indicated.
2290_25_OD and 2290_25_CM OCS Calibration Fault, Front Pass. Side When the OCSM senses a difference in calibration values, a fault will be indicated.
2290_26_OD and 2290_26_CM OCS Communications Fault, Front Pass. Side When the OCSM is not able to communicate with the RCM, a fault will be indicated.
2290_27_OD and 2290_27_CM Generic OCSM Fault, Front Pass. Side When the OCSM senses a fault with the bladder pressure sensor and/or circuits, a fault will be indicated.
2290_28_OD and 2290_28_CM Occupant Classification Sensor Mounting Fault, Front Passenger Side When the OCSM senses a fault with one of its components, 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 memory status and are associated with continuous DTC B2290.

This pinpoint test is intended to diagnose the following:

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