User manual

VCDS - Output Tests - Section 18-A
(VAG 1551/1552 function 03)
The Output Tests function is used to test a Control Module's Electrical Outputs (and the
wiring that connects it to the various devices). Output Tests under
KWP-2000/CAN/UDS includes simultaneous measuring data when available from the
control module in question, in UDS by clicking on the [Measuring Values] button.
To begin sequential Output Tests, and to progress through each step, click [Start/Next]. In
some cases an [Activate] button will appear, depending on the specifics of the control
module.
Notes:
The Outputs that can be tested and the sequence in which they become active are
controlled strictly by the Control Module; this is not a function of the Diagnostic Tester. To
find out which Outputs can be tested and the sequence in which they will become active,
please refer to the Factory Repair Manual for your car.
Once the Test Sequence has been started, clicking [Done, Go Back] will take you back to
the Open Controller Function Screen. THE TEST SEQUENCE WILL STILL BE ACTIVE!
Most Control Modules will permit the Output Test Sequence to be run only one time per
session. If you run the Test Sequence to completion, VCDS will allow you to return to the
previous screen without closing the session, but you may not be able to run the Output Test
Sequence again. If you need to run the Sequence again, manually Close the Controller
and re-start the session. On some cars, you must cycle the key OFF and ON or even start
the engine (to clear the cylinders of fuel).
Some Output Tests require additional action before they become active. Fuel Injectors are
a common example. To activate a Fuel Injector, you must press (and in some cases
release) the gas pedal. Exact details can be found in your Factory Repair Manual.