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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 620 (Information And Entertainment Systems - THX Audio System) >> Diagnosis And Testing >> Information and Entertainment System >> Pinpoint Tests >> Pinpoint Test Ai : DTC U0155:00 >> Notes

Pinpoint Test Ai : DTC U0155:00: Notes

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

Diagnostic Overview 

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Service Information for information about these practices.

Normal Operation and Fault Conditions 

The APIM ACM, audio DSP module, FCIM, and audio RCU module communicate with the IPC through the I-CAN.

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
U0155:00 Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information Set by the ACM, APIM, audio DSP module, FCIM, and audio RCU module when network messages are missing from the IPC for more than 5 seconds with the ignition in RUN.
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