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Pinpoint Test L : The TCU (TELEMATIC Control Unit Module) Does Not Respond To The Diagnostic Scan Tool: Notes

WARNING: This page is about a different car, the 2021 Ford EcoSport. However, it is still accessible from the selected car via links, so may be relevant.

Refer to MODULE COMMUNICATIONS NETWORK for schematic and connector information.

Normal Operation and Fault Conditions 

The TCU communicates on the HS-CAN3, and communicates with the diagnostic scan tool through the HS-CAN2. Diagnostic messages are sent/received through the HS-CAN2 circuits at the DLC and translated through the GWM to the HS-CAN3.

Possible Sources 

Visual Inspection and Pre-checks 

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