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.
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HOMESERVICE MANUALSDODGE AND RAM20241500 TRXREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 272 ((OCCUPANT CLASSIFICATION MODULE (OCM) - ELECTRICAL DIAGNOSTICS - 1500))DTC TROUBLESHOOTINGU0140-00-LOST COMMUNICATION WITH BODY CONTROL MODULETHEORY OF OPERATION
2024 Dodge and Ram 1500 TRX
Theory Of Operation
2024 Dodge and Ram 1500 TRXSECTION Theory Of Operation
WARNING: This page is about a different car, the 2023 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
The Occupant Classification Module (OCM) establishes and maintains communication with the Body Control Module (BCM).
RENDER: 1.0x
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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.