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Electronically controlled cooling system > < Removing and installing coolant pump|Install

Octavia Mk1

Testing coolant temperature sensorG83 (radiator outlet)
Testing coolant temperature sensor -G83- (radiator outlet)
–  Unplug the 2-pin plug from the coolant temperature sensor -G83- and connect the sensor to the multimeter using adapter cables.
–  Measure the resistance.
   
The nominal value in field -A- applies for temperature range 0...50 °C, nominal value in field -B- applies for temperature range 50...100 °C.
–  Read out examples:
t  30 °C is within range A and equals a resistance of 1.5...2.0 kΩ
t  80 °C is in range B and corresponds to a resistance of 275...375 Ω
If the specification is not achieved
–  Replace the coolant temperature sender -G83 -.
If the specified value is reached:
  N24-0640
–  Connect test box -V.A.G 1598/31 - to wiring loom of the control unit. The engine control unit is not connected.
–  Check wiring between the test box and the 2-pin plug for interruption according to the Current Flow Diagram:
   Contact 1 and test box socket 25 (signal)
Contact 2 and test box socket 47 (earth)
Cable resistance: max. 1.5 Ω
–  Additionally check the wiring for short-circuiting, as well as for short-circuiting to positive and earth.
  N24-0943

Electronically controlled cooling system > < Removing and installing coolant pump|Install