Passat Sedan L4-2.0L Turbo (BPY) (2007)
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Connect diagnostic tester.
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Switch ignition on.
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Under address word 33, select "Diagnostic mode 1: Checking measured values."
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Select measuring value "PID 5 ($5): Coolant temperature"
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Check specified value of coolant temperature:
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Start engine and let run at idle. The temperature must climb uniformly
NOTE:
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The temperature increases in increments of 1.0 degree C.
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If the engine shows problems in certain temperature ranges and if the temperature does not climb uniformly, the temperature signal is
intermittent and the sensor should be replaced.
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End diagnosis and switch ignition off.
If specified values are not obtained:
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Remove engine cover, removing and disassembling air filter/engine cover.
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Disconnect 2-pin connector -1 - from Engine Coolant Temperature (ECT) Sensor -G62-
Checking resistance
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Check resistance of Engine Coolant Temperature (ECT) Sensor -G62- between terminals using adapter cables.