The sensor is installed on the left in the gearbox housing near the drive shaft flange.
Remove dashboard.
Remove the blue 26-pole connector and connect the measuring adapter VAG 1594/16 to it.
Attention: The test must be carried out only with the specified adapter, otherwise the sensitive contacts of the plug may be damaged.
Connect an ohmmeter between terminals 20 and 21.
Raise the car on the left front so that the front wheel turns freely.
Turn the front left wheel by hand.
The meter reading should fluctuate between 0 and ohms. Otherwise, find a broken wire or replace the speedometer sensor.
Automatic transmission
Connect a voltmeter to pin 16 (+) And (-).
Switch on the ignition and move the vehicle 1 m forward or backward. In this case, the voltage should increase from 0 to 12 V, and then again fall to 0 V. If necessary, find and eliminate a wire break according to the diagram or replace the sensor.
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