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Checking Lambda probe 1 heater after catalytic converter Z29 for Lambda probe after catalytic converter G130 > < Checking basic voltage

A3 Mk1

Checking Lambda probe wiring
Checking Lambda probe wiring
–  Unplug the 4-pin connector (brown) to the Lambda probe after catalytic converter -G130-.
–  Connect the test box -V.A.G 1598/31- to the wiring harness to the engine control unit, but do not connect the actual engine control unit → Chapter.
   
–  Check for open circuit in the following wiring.
  A24-0094
Connector
Contact		Test box -V.A.G 1598/31-
Socket
368
469

–  Eliminate open circuit in wiring if necessary. → Current flow diagrams, Electrical fault finding and Fitting locations
–  Check the wiring for mutual short circuit.
If the wiring is OK:
–  Replace the engine control unit → Chapter.
   

Checking Lambda probe 1 heater after catalytic converter Z29 for Lambda probe after catalytic converter G130 > < Checking basic voltage