Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Pinpoint Test BG: OCS (Occupant Classification System) Concerns
- Normal Operation and Fault Conditions
The OCS sensor is internal to the OCSM and cannot be serviced separately. For more information refer to REFER to: Airbag and Seatbelt Pretensioner Supplemental Restraint System (SRS) - System Operation and Component Description .
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition OCSM B00C0:11 Passenger Seat Occupant Classification Sensor "A": Circuit Short To Ground This DTC sets due to an internal fault with the OCSM. OCSM B00C0:12 Passenger Seat Occupant Classification Sensor "A": Circuit Short To Battery This DTC sets due to an internal fault with the OCSM. OCSM B00C0:16 Passenger Seat Occupant Classification Sensor "A": Circuit Voltage Below Threshold This DTC sets due to an internal fault with the OCSM. OCSM B00C0:49 Passenger Seat Occupant Classification Sensor "A": Internal Electronic Failure This DTC sets due to an internal fault with the OCSM. OCSM B00C0:7B Passenger Seat Occupant Classification Sensor "A": Low Fluid Level This DTC sets if the OCSM senses that OCS sensor readings are too low. Possible Sources
- Incorrect OCS sensor installation
- OCS sensor damaged
- Passenger seat damaged.
- OCSM
Visual Inspection and Pre-checks
- Review recent service history to identify repairs where an incorrect component may have been installed.
- Inspect passenger seat for recent repairs.
- BG1 CHECK THE OCS (OCCUPANT CLASSIFICATION SYSTEM) SENSOR INSTALLATION
- Ignition OFF.
- Depower the SRS. REFER to: Supplemental Restraint System (SRS) Depowering .
- Inspect the passenger seat for damage or incorrect installation. REFER to: Front Seat .
- Inspect the OCS sensor installation and make sure that the hardware is fully seated and tightened correctly.
- Inspect the OCS sensor hose for kinks, damage, or improper routing.
Were any concerns found?
Yes REPAIR as necessary. No INSTALL a new OCS sensor. REFER to: Occupant Classification System (OCS) Sensor - Vehicles With: Multi-Contour Seats . or REFER to: Occupant Classification System (OCS) Sensor - Vehicles Without: Multi-Contour Seats .
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.