Audi Workshop Service and Repair Manuals

Notes:

• ◆ For testing the operation of the intake air temperature sender, see also "Reading measured value block", Display Group 03, display zone 4.

• ◆ Fitting location of intake air temperature sender
  => Page .
• ◆ Engine cooled to room temperature (approx. 20 °C).

• ‒ Unplug connector from intake air temperature sender.
• ‒ → Connect ohmmeter to intake air temperature sender.

Specification: 5.7 ... 6.7 kω.

• ‒ If the value does not match the specification, fit a new intake air temperature sender.
• ‒ If the value does match the specification, test the wiring between the sender connector and the engine control unit as follows:
• ‒ Connect test box V.A.G 1598/22 to wiring harness for engine control unit
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• ‒ → Test wiring between 2-pin connector for sender ...

• ‒ → ... and engine control unit for open circuit and short to positive or earth using current flow diagram.

• ‒ If no faults have been found in any of the above tests, fit a new engine control unit.
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