Jetta V6-2.8L (AFP) (1999)
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Disconnect electrical connector from Coolant Fan Control (FC) Thermal Switch F18.
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Use auxiliary cables from Auxiliary measuring tool set VAG 1594 A to bypass contact - 1 - and contact - 2 - of connector.
Stage 1 of coolant fans Coolant Fan V7 and Right coolant fan V35 should start.
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Switch ignition on.
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Use auxiliary cables from Auxiliary measuring tool set VAG 1594 A to bypass contact - 2 - and contact - 3 - of connector.
Stage 2 of coolant fans Coolant Fan V7 and Right coolant fan V35 should start.
If Stage 1 or 2 of the fans does not start:
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Use wiring diagram to find and repair open circuit.
If no open circuit could be found:
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Replace Coolant Fan V7 or Right coolant fan V35, respectively.