14.02.2016 Views

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

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Measured value (data) blocks<br />

Página 40 de 86<br />

01-221<br />

Evaluating display group 32, display zones 1 and 2 - Oxygen Sensor (O2S) learned<br />

values before Three Way Catalytic Converter (TWC)<br />

Appears on<br />

display<br />

Low Oxygen<br />

Sensor (O2S)<br />

learned<br />

values<br />

Possible cause<br />

Low learned values at idling<br />

but with normal learned<br />

values at part throttle/load:<br />

possible oil dilution (high<br />

level of fuel in oil)<br />

Corrective action<br />

- Disappears after<br />

freeway/expressway driving or oil<br />

change<br />

Fuel injector leaking - Check fuel injectors Page 24-97<br />

Fuel pressure too high<br />

Evaporative Emission<br />

(EVAP) Canister Purge<br />

Regulator Valve -N80-<br />

permanently open<br />

Mass Air Flow (MAF) Sensor<br />

-G70- faulty<br />

Oxygen Sensor (O2S)<br />

heating faulty or Oxygen<br />

Sensor (O2S) contaminated<br />

- Check fuel pressure control and<br />

holding pressure Page 24-110<br />

- Check Evaporative Emission<br />

(EVAP) Canister Purge Regulator<br />

Valve -N80- Page 01-100 ,<br />

Output Diagnosis Test Mode (DTM)<br />

- Check Evaporative Emissions<br />

(EVAP) Canister system:<br />

<strong>Repair</strong> Manual, 2.8 Liter VR6 4V<br />

Engine Mechanical, Engine Code(s):<br />

BDF; <strong>Repair</strong> Group 20<br />

- Check Mass Air Flow (MAF)<br />

Sensor -G70- Page 24-52<br />

- Check Oxygen Sensor (O2S)<br />

heating before Three Way Catalytic<br />

Converter (TWC) Page 24-38<br />

Continuation<br />

next Page<br />

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

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

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!