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Home >> Audi >> 1999 >> A6 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> On Board Diagnostic (OBD) - 2.8L V6 Aha >> On Board Diagnostic >> On Board Diagnostic (OBD) >> Output Diagnostic Test Mode (scan tool function 03) >> Notes

Output Diagnostic Test Mode (scan tool function 03): Notes

NOTE:
  • The output Diagnostic Test Mode (DTM) can be activated only with the ignition switched on and the engine not running.
  • The output DTM is interrupted if the engine is started, or if a rotary pulse from the ignition system is recognized.
  • When operating in the output DTM, the individual output signals are actuated until the program sequence is advanced by pressing the --> button.
  • Output signals are checked by listening for the sound of the component being actuated, or feeling for mechanical evidence of actuation, such as clicking, vibration, etc.
  • Without letting the engine run, briefly switch the ignition off for approx. 20 seconds before repeating the output checks.
  • During the entire output DTM sequence, the electric fuel pump will run.
  • The output DTM will be interrupted after 10 minutes.
  • Component locations, see COMPONENT LOCATIONS

The following components are actuated in sequence:

  1. Cylinder 1 fuel injector -N30-
  2. Cylinder 2 fuel injector -N31-
  3. Cylinder 3 fuel injector -N32-
  4. Cylinder 4 fuel injector -N33-
  5. Cylinder 5 fuel injector -N83-
  6. Cylinder 6 fuel injector -N84-
  7. EVAP canister purge regulator valve -N80-
  8. Secondary AIR solenoid valve -N112-
  9. Secondary AIR pump relay -J299-
  10. Intake manifold tuning valve -N156-

    (change-over valve)

  11. Camshaft adjustment 1 (Valves -1- and -2- for camshaft adjustment, -N205- and -N208-)
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