A4 Cabriolet L4-1.8L Turbo (AMB) (2005)
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Disconnect harness connector at Engine Speed (RPM) Sensor -G28- (item 3).
NOTE:
Coolant reservoir screw (arrow) must be removed and coolant reservoir must be placed to the side in order to access harness connector. The
coolant hoses remain connected.
Checking internal resistance
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Connect multimeter between terminal 2 and 3 for resistance measurement.
Specified value: 730 to 1000 Ohms
NOTE: Resistance value of the engine speed (RPM) sensor is based on a temperature of 20 degrees C. Resistance increases as temperature
increases.
If specified value is not obtained:
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Replace Engine Speed (RPM) sensor.
If specified value is obtained:
