Test R: DTC B229B - Occupant Classification System Obstruction

PINPOINT TEST R: DTC B229B - OCCUPANT CLASSIFICATION SYSTEM OBSTRUCTION

R1-R3:

R4-R6:

Normal Operation
The occupant classification sensor (OCS) is used to classify the front passenger seat occupant in the event of a deployable impact.

The OCS system monitors the 2 OCS rails (weight sensors) and circuitry for faults. If the OCS module detects an obstruction of both OCS rails, it will store diagnostic trouble code (DTC) B229B in memory and send a message to the restraints control module (RCM) which illuminates the air bag indicator.

Possible Causes
An OCS system obstruction fault can be caused by:
- a foreign object placed under or contacting the passenger seat.
- faulty OCS system component(s).