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Bentley Volkswagen.Golf.Jetta.R32.Official.Factory.Repair.Manual.1999-2005

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Measured value (data) blocks<br />

Página 43 de 86<br />

01-224<br />

Evaluating display group 33, display zone 1 - Oxygen Sensor (O2S) control before<br />

Three Way Catalytic Converter (TWC)<br />

Appears on<br />

display<br />

Outside<br />

tolerance<br />

range<br />

Possible cause<br />

Minus range: Mixture too rich,<br />

Oxygen Sensor (O2S) control<br />

weakens mixture<br />

Positive range: Mixture too lean,<br />

Oxygen Sensor (O2S) control<br />

enriches mixture<br />

Oxygen Sensor (O2S) learned<br />

value on limit<br />

Fuel injector faulty<br />

Unmetered air<br />

Corrective action<br />

- Wait 30 seconds until<br />

display has stabilized<br />

- Check Oxygen Sensor<br />

(O2S) learned value in<br />

display group 32<br />

- Check fuel injectors<br />

Page 24-97<br />

- Check intake air system for<br />

leaks Page 24-121<br />

http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Next&type=repair&id=...<br />

12/2/<strong>2005</strong>

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