Diagnostic tool
Diagnostic tool
MANUAL HANDBUTCH MANUEL
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Software
1. Download and install Webasto Thermo Test software from:
http://www.techwebasto.com/heater_thermo_test.htm
2. Run WTT software.
3. Choose Extras  COM port... and select your COM port. Usually it is from COM3 to COM9.
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4. Choose Diagnosis Device selection... and select from the list your heater or use automatic search if you don‘t
know your model.
5. Press OK button.
6. In protocol window you will see errors and messages about connection to device. If you used automatic search
you can see your device model, so next time you won‘t have to use automatic search next time connecting to
device.
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Drivers
1. Download newest drivers from: http://www.prolific.com.tw/eng/downloads.asp?ID=31
2. Connect your diagnostic adapter to USB port.
3. Install drivers.
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Connecting adapter to ThermoTop
Connect yellow wire from adapter to heater yellow wire, red wire to red wire and black wire from adapter to heater
brown wire.
Red (+12V/+24V)
Brown (Ground)
Yellow (diagnosis)
Red (+12V/+24V)
Black (Ground)
Yellow (Diagnosis)
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Connecting adapter to AirTop
Connect yellow wire from adapter to heater yellow wire or green with white stripe, red wire to red wire and black
wire from adapter to heater brown wire.
Red (+12V/+24V)
Brown (Ground)
Green WS or Yellow
Red (+12V/+24V)
Black (Ground)
Yellow (Diagnosis)
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