Jetta GLX Wagon V6-2.8L (AFP) (2001)
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Connect contacts on coolant feed pump -V51 - with battery using auxiliary cables from VAG 1594 A.
The pump should start.
If the pump does not start:
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Replace pump -V51-.
If the -V51- starts:
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Switch ignition off and on.
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Connect VAG 1527 B diode test lamp to disconnected attachment plug of coolant feed pump -V51- using auxiliary cables from VAG 1594 A.
The LED should illuminate.
Note: This test must be conducted within 10 minutes of the time that the ignition was turned off
If the LED does not illuminate:
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Using wiring diagram find and repair open circuit.