LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercury >> 2009 >> Sable Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1190 (Information Center) >> Diagnostic Tests >> Instrument Cluster (IC), Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test AF: DTC U0121 - Lost Communication With Anti-Lock Brake System Control Module (ABS) >> Normal Operation
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Normal Operation

WARNING: This page is about a different car, the 2008 Mercury Sable, 2008 Ford Taurus X, and 2008 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.

The instrument cluster (IC) sets DTC U0121 if data messages received from the ABS module over the high speed controller area network (HS-CAN) are missing. For a complete list of all network messages, refer to MODULE COMMUNICATIONS NETWORK article.

This pinpoint test is intended to diagnose the following: