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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1110 (Supplemental Inflatable Restraint System) >> Diagnosis And Testing >> Pinpoint Tests - Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Test AM: DTC U1900 - CAN Communication Bus Fault - Receive Error >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

The restraints control module (RCM) monitors the HS-CAN for messages from the instrument cluster module and the powertrain control module. If the RCM detects a communication bus fault or missing messages, it will store diagnostic trouble code (DTC) U1900 in memory.