Audi Workshop Service and Repair Manuals

Fitting location of intake air temperature sender, see Fitting locations overview, .

• ◆ Engine cooled down to room temperature (approx. 20 oC).

• ‒ Disconnect the connector from the intake air temperature sender.
• ‒ → Connect ohmmeter to intake air temperature sender.
• ‒ Specified value: approx. 1,6 ... 2.8 kω.
• ‒ If the value does not match the specified value, fit a new intake air temperature sender.

• ‒ If the specified value is met, check the wiring between the sender connector and the Motronic control unit as follows:
• ‒ Connect test box V.A.G 1598/19 to the wiring harness of the Motronic control unit.
• ‒ → Check for open circuit and short to ground or positive in wiring from 2-pin sender connector ...

• ‒ → ... to Motronic control unit -J220 according to current flow diagram.

• ‒ If none of the tests up to this point have revealed a fault, replace the Motronic control unit.