Jetta SportWagen L4-2.0L DSL Turbo (CBEA) (2009)
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The temperature value must increase uniformly in increments of approximately 1.0° C.
If the engine shows problems in certain temperature ranges and if the temperature does not climb uniformly, the temperature signal is intermittent.
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Replace the Engine Coolant Temperature (ECT) Sensor 2 (G83).
Checking internal resistance
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Disconnect the Engine Coolant Temperature (ECT) Sensor 2 (G83) electrical harness connector (located on the lower radiator hose at the engine
connection).
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Using a multimeter, check the Engine Coolant Temperature (ECT) Sensor 2 (G83) terminals 1 to 2 for resistance.
Use the chart below for the specified values:
Specified value:
If the specified values were Not obtained:
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Replace the Engine Coolant Temperature (ECT) Sensor 2 (G83).
If the specified values were obtained:
Checking wiring
If the manufacturers test box is being used, perform the following step.
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Install the test box.
If the manufacturers test box is not being used, perform the following step.
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Remove the Motronic Engine Control Module (ECM) (J623).
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Using a multimeter, check the Engine Coolant Temperature (ECT) Sensor (G83) electrical harness connector terminals to the Motronic Engine
Control Module (ECM) (J623) electrical harness connector T94 terminals for a circuit fault, refer to the chart below.