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‒ → Pull off the connector on the sensor => Overview of fitting locations, Page 23-4.
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‒ Connect test box V.A.G 1598/22 to wiring harness for engine control unit .
The following wiring connections are to be checked for open circuits and/or short to positive or negative.
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4-pin connector on the wiring harness, contact
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Test box V.A.G 1598/22, socket
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1
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70
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3
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54
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‒ Rectify any open/short circuit as necessary.
=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
If no wiring fault is detected:
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‒ Replace coolant temperature sender (G62).
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