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Checking idling speed > < Exhaust warning lamp -K83 in dash panel insert

A4 Mk1

Motronic Fuel Injection and Ignition System (6-cylinder)
Servicing Motronic injection system
Check exhaust warning lamp -K83

Functional check on control lamp

  • ‒ Switch the ignition on.
    • ‒ The fault lamp for self-diagnosis (exhaust warning lamp) must illuminate.
  • ‒ Start the engine.
    • ‒ Shortly after starting the engine the exhaust warning lamp goes out if no exhaust emission relevant fault is stored in the fault memory.

Note:

The switch-on signal for the fault lamp is transfer via CAN bus to the dash panel insert by the engine control unit. Check data exchange between engine control unit and other CAN-control units =>Page 24-189

Checking idling speed > < Exhaust warning lamp -K83 in dash panel insert