Action Taken When the DTCs Sets

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The module suspends all message transmission.
The module uses default values for all parameters received on the serial data circuits.
In the TCM, DTC U0073 will cause the transmission to go into default gears.
In the ECM and TCM, DTC U0073 will cause the malfunction indicator lamp (MIL) to illuminate.
The module inhibits the setting of all other communication DTCs.