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14 KTS 340 Operation
The KTS 340 is connected to the diagnostic interface in the vehicle by means of:
RR The OBD diagnostic cable (Fig. 3, Pos. 2), or
RR The OBD diagnostic cable and also the UNI connect- ing cable (Fig. 3, Pos. 3; special accessory), or
RR The OBD diagnostic cable and also a
RR A
5.2Switching on
¶¶Switch on the KTS 340 with the On/Off button.
""After the system has started, the KTS 340 remains in the "Vehicle identification" start screen. The start screen is always displayed after
!!If the KTS 340 is supplied with power via the power supply unit, always use the power supply unit provided. Do not use power supply units with less power than 15V/3A, such as those supplied with the KTS 200 or KTS 5xx, for example.
The KTS 340 is usually supplied with power via the OBD diagnostic socket in the vehicle. If you do not know where in the vehicle the OBD diagnostic socket is located, we recommend finding it by means of KTS 340 control unit diagnosis.
iiIn some vehicles, the cigarette lighter socket only supplies power when the ignition is turned on.
iiIf a test step involves starting the engine, the battery voltage may drop to such an extent that supply via the vehicle is no longer guaranteed. In such cases
it may be necessary to supply the KTS 340 via the power supply unit.
iiIn some vehicles, the ignition must be switched on in order for power to be supplied via the OBD interface.
If the KTS 340 is connected to a PC/laptop via the USB connecting cable, we recommend supplying it with power via the power supply unit provided.
5.3Switching off
¶¶Press the On/Off button for approx. three seconds. ""The KTS 340 is switched off.
If it is only being run off the battery, the KTS 340 is switched off if the battery voltage drops below 8 V or if the device has not been used for ten minutes (factory setting).
If the KTS 340 is being supplied via an external power source (e.g. OBD diagnostic cable or power supply unit) and is not used for a lengthy period, the bright- ness of the LCD touchscreen is reduced.
5.4Notes on multimeter
Danger from high voltage!
There is a risk of potentially fatal voltage if measurements are taken without a ground cable.
¶¶If no diagnostic cable is connected, use the
ground cable provided to make a ground connection between the KTS 340 and ve- hicle ground before taking U, R or I measu- rements.
¶¶Connect the ground cable as close as pos- sible to the object to be measured.
¶¶Only use the KTS 340 on the vehicle and not for measurements involving voltages > 60 V.
¶¶Do not perform any measurements on igni- tion systems.
¶¶Only use the test cables provided (with contact protection).
¶¶Always plug in the test cables at the KTS 340 first and then on the vehicle.
¶¶Do not lay unshielded test cables close to sources of major interference such as ignition cables.
5.5Touchscreen with stylus
The touchscreen of the KTS 340 is operated with the stylus. Touch the application you require with the stylus.
iiYou can perform "Touchscreen calibration" in the
Service menu 
via "User settings >> Customer Service". To avoid errors, your eyes must be vertical- ly above the calibration points. Click on the calibra- tion points as accurately as possible.
5.6Program description
You can open the online help for the KTS 340 in the header bar under 
.
You can find basic information on the KTS 340 and the ESI[tronic] Startcenter in the "ESI[tronic] trainer".
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