Tiguan 4Motion (5N1) L4-2.0L Turbo (CCTA) (2009)
Checking primary voltage
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Disconnect the Heated Oxygen Sensor (HO2S) (G39 ) electrical harness connector - 1 -.
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Turn the ignition on.
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Using a multimeter connected to Ground, check the Heated Oxygen Sensor (HO2S) (G39) electrical harness connector terminals 1 and 5 for
voltage.
Specified value: 2.45 to 2.99 Volts
If the specified value was obtained:
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Using a multimeter connected to Ground, check the Heated Oxygen Sensor (HO2S) (G39) electrical harness connector terminal 2 for voltage
Specified value: 2.25 to 2.79 Volts
If the specified value was obtained:
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Using a multimeter connected to Ground, check the Heated Oxygen Sensor (HO2S) (G39) electrical harness connector terminal 6 for voltage
Specified value: 3.25 to 3.79 Volts
If the specified value was obtained:
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Replace the Heated Oxygen Sensor (HO2S) (G39).
If any of the above specified values were not 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 Heated Oxygen Sensor (HO2S) (G39) electrical harness connector terminals to the Motronic Engine Control
Module (ECM) (J623) electrical harness connector T94 terminals for an open circuit.