Jetta Sedan L5-2.5L (BGP) (2005)
‹› All electrical consumers such as, lights and rear window defroster, switched off.
‹› Vehicles with automatic transmission, shift selector lever into position " P" or "N".
‹› A/C switched off.
‹› Ground (GND) connections between engine/transmission/chassis OK.
‹› Ignition switched off.
Test procedure
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Perform a preliminary check to verify the customers complaint. Refer to --> [ Engine Control Module, Replacing ] .
Start diagnosis
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Remove the engine cover with air filter.
Checking internal resistance
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Disconnect the Heated Oxygen Sensor (HO2S) (G39) electrical harness connector - 1 -.
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Using a multimeter, check the Heated Oxygen Sensor (HO2S) (G39) terminals 3 to 4 for resistance.
Specified value: 2.5 to 10.0 ohms (at approx. 20° C)
If the specification was not obtained: