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Checking throttle valve control unit -J338 > < Fault lamp for electronic throttle in dash panel insert

A4 Mk1

Motronic Fuel Injection and Ignition System (4-cyl) Turbo
Checking electronic engine power control (electronic throttle)
Check electronic throttle control fault lamp -K132

Functional check on control lamp

  • ‒ Switch the ignition on.
    • ‒ The engine control unit switches on the EPC lamp.
  • ‒ Start the engine.
    • ‒ Shortly after starting the engine the exhaust warning lamp goes out if no fault in relation of the electronic throttle 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 the data exchange between engine control unit and other CAN-control units =>Page 24-171

Checking throttle valve control unit -J338 > < Fault lamp for electronic throttle in dash panel insert