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Home >> Lincoln >> 2009 >> MKX FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 913 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> Pinpoint Tests - Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test V: DTC U1900 - CAN Communication Bus Fault - Receive Error (OCS) >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2007 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

The occupant classification sensor (OCS) module monitors the HS-CAN for messages from the restraints control module (RCM). If the OCS module detects a communication bus fault or missing messages, it will store diagnostic trouble code (DTC) U1900 in memory and illuminate the air bag indicator.

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