# Using the Monitors - Actuators window The Actuators tab displays the current status of the solenoid valves in the transmission in real time.
| How to open Monitors - Actuators:
Select Service > Monitor 1 > Actuators. If there is communication with a connected transmission control unit, the current status of the solenoid valves is displayed automatically. If communication with a transmission control unit is not possible, this will be indicated by a at the bottom right of the window: This message is also displayed when communication with a connected transmission control unit has been interrupted. For help in the event of communication problems, please refer to: Communication problems. Once you have eliminated the communication problems, click "Yes" if ALADIN is to re-establish communication with a transmission control unit. An existing communication is shown by the progress bar.
| The display of the solenoid valves:
> > Field A Name of the solenoid valve Field B Status of the solenoid valve
> > Symbol | Description |
> > | The solenoid valve is switched off at the moment. |
> > | The solenoid valve is energized at the moment. |
> > | A fault occurred at this solenoid valve. Perform an upload for targeted troubleshooting. For further information, please see: Upload. |
| Solenoid valves, installation locations:
For information on the connector pin assignment for the solenoid valves at the transmission and transmission control unit, please see: Connector pin assignment .
| The general display in Monitors:
> The general display is shown in every tab of the Monitors window. On top, there are four symbols for:
> Symbol | Description |
> | General transmission fault. |
> | General retarder fault. |
> | Transmission temperature too high. |
> | Retarder temperature too high. |
> Below, there is the real-time display of the following signals:
> Signal | Description |
> n1 | Engine speed / transmission input speed |
> n2 | Transmission output speed |
> n3 | Turbine speed |
> FP | Accelerator pedal position |
> BP | Brake pedal position |
> Time | Display of the sample time (for debugging tasks only) |
| Further topics:
More information on: Report More information on: Upload More information on: Connector pin assignment More information on: Communication problems More information on: Actuator test Up > Higher-level section © by Voith Turbo GmbH & Co. KG send remarks to joachim.ehleiter@voith.com (electronic department) or r.theilacker@voith.com (electronic department)