To avoid serious injury follow all warnings and instructions in the manual. Wear appropriate personal protective equipment.
Expose each hose RTD connection to check for exposed and shorted RTD wires. Measure hose RTD cable and FTS continuity. Order RTD Test kit 24N365 for measurement.
Disconnect hose RTD and use manual hose mode to finish job until repair can be completed.
If the error still occurs with the hose FTS unplugged, one of the heater RTDs is bad. Unplug the A or B RTD from the TCM. If unplugging an RTD fixes the T6DT error, replace the RTD.