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DTC Troubleshooting: U1401 (161-21)

DTC U1401:
 F-CAN Malfunction (TCM Received Invalid Shift Down Command While Cruise Control from ECM)
  1. Turn the ignition switch to ON (II).
  1. Clear the DTCs with the HDS.
  1. Test-drive the vehicle with cruise control.
  1. Check for DTCs with the HDS.
Is DTC U1401 indicated?
YES -
Check for Fuel and Emissions systems.■
NO -
Intermittent failure, the system is OK at this time.■