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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1158 (MULTIFUNCTION Electronic Modules) >> Diagnosis And Testing >> Body Control Module (BCM) >> Pinpoint Tests >> Pinpoint Test B : U0121:87 >> Notes

Pinpoint Test B : U0121:87: Notes

WARNING: This page is about a different car, the 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions 

The BCM communicates with the ABS module through the GWM. REFER to: Communications Network - System Operation and Component Description .

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
U0121:87 Lost Communication With Anti-Lock Brake System (ABS) Control Module: Missing Message A continuous memory DTC that sets in the BCM if ABS messages received from the ABS module over the High Speed Controller Area Network 2 (HS2-CAN) through the GWM are missing.

Possible Sources 

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