Download Webasto Thermo Test Version 2.16 Operating Instructions

Troubleshooting
4
4.1.
General
Troubleshooting
General
When you select a test function, an error message is displayed.
• Check if the diagnostic adapter is connected to the selected serial port
or the USB port on the PC and that heater is properly connected.
• Check whether the heater is switched on and is receiving power.
• Is there an earth connection (apart from via the diagnostic cable)
between the PC and the vehicle? If so: Immediately disconnect the
diagnostic cable and disconnect the relevant connection to prevent
damage to the adapter and PC.
• The control unit may be defective (check with a different unit before
replacing it).
• A control unit that has no diagnostic capability may have been selected.
• An incorrect connection on the control unit has been used for the
diagnostic cable.
• If you are using an RS232 (COM) port:
If another program (e.g. keypad or mouse) is accessing the port, this
application must be closed.
33