Ensure the engine is turned off and the ignition is switched to the "ON" position.
Locate the diagnostic connector, which is usually a 9-pin connector located near the driver's seat.
Connect a diagnostic tool, such as a laptop with appropriate software, to the diagnostic connector.
Turn the ignition key to the "RUN" position without starting the engine.
The diagnostic tool should automatically establish communication with the truck's electronic control unit (ECU).
Once connected, select the "Fault Codes" or "Diagnostic Trouble Codes" option from the diagnostic tool's menu.
The diagnostic tool will display a list of fault codes stored in the ECU.
Look for fault code EEC 61 in the list.
The diagnostic tool will provide additional information about the fault code, such as its description and possible causes.
Note:
The specific steps for reading fault codes may vary slightly depending on the model year of the Freightliner Cascadia and the diagnostic tool being used. It is recommended to refer to the truck's service manual or consult with a qualified technician for accurate diagnostic procedures.
