New Beetle L5-2.5L (BPR) (2007)
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Check the value indicated on the scan tool display.
If the value jumps to approx. 140.0° C:
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Switch the ignition OFF.
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Replace the Engine Coolant Temperature (ECT) Sensor (G62 ).
If indication remains at approx. -40.0° C:
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) ( J220). Refer to the Repair Information.
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Using a multimeter, check the Engine Coolant Temperature (ECT) Sensor (G62 ) electrical harness connector terminals to the Motronic Engine
Control Module (ECM) (J220) electrical harness connector for an open circuit or a short to voltage, refer to the chart below.
Specified circuit values: 1.5 ohms Max. resistance and 0 volts when disconnected from ECM.
If the specified value was Not obtained:
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Check the wiring for an open or short circuit to Battery (+).
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
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If necessary, repair the faulty wiring connection.
If no malfunction is detected in the signal circuit:
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Using a multimeter, check terminal 3 of the ECT sensor to engine ground.
Specified value: 1.5 ohms Max
If the specified value was Not obtained:
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Check the wiring for an open circuit or high resistance.
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
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If necessary, repair the faulty wiring connection.
If no malfunction is detected in the ground circuit:
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Replace the Motronic Engine Control Module (ECM) (J220). Refer to the Repair Information.
Testing if display approx. 140.0 C
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Disconnect the Engine Coolant Temperature (ECT) Sensor (G62 ) electrical harness connector.
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Turn the ignition switch ON.
If indication jumps to approx. -40.0° C: