Daudia6

AIR QUALITY

royclark

Air quality sensor -G238-

<TABLE cellSpacing=0 cellPadding=0 width="100%"><TBODY><TR><TD class=spalte-text><TABLE class="cc abstand-u-kap einzug-standard"><TBODY><TR><TD class=titel-u-kap>Removing and installing</TD></TR></TBODY></TABLE><TABLE class="cc einzug-standard abstand-standard "><TBODY><TR><TD class=einzug-liste>– </TD><TD>Remove plenum chamber cover.



</TD></TR></TBODY></TABLE><TABLE class="cc achtung-rahmen abstand-standard einzug-standard"><TBODY><TR><TD class=achtung-inhalt>WARNING
<TABLE class="cc einzug-standard abstand-liste-erster achtung-rumpf"><TBODY><TR><TD>The two valves of the pump valve unit may be hot even if the engine is cold.</TD></TR></TBODY></TABLE>


</TD></TR></TBODY></TABLE><TABLE class="cc einzug-standard abstand-standard "><TBODY><TR><TD class=einzug-liste>– </TD><TD>Unfasten the dome brace if applicable (not necessary on all vehicles, different designs)</TD></TR></TBODY></TABLE></TD><TD class=spalte-pfeil></TD><TD class=spalte-marg></TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=0 width="100%"><TBODY><TR><TD class=spalte-text><TABLE class="cc einzug-standard abstand-standard "><TBODY><TR><TD class=einzug-liste>– </TD><TD>Turn air quality sensor -G238- through 90° and lift sensor -B- out of mount.</TD></TR></TBODY></TABLE><TABLE class="cc einzug-standard abstand-standard "><TBODY><TR><TD class=einzug-liste>– </TD><TD>Unplug connector -A- from air quality sensor -G238-.</TD></TR></TBODY></TABLE><TABLE class="cc einzug-standard abstand-standard "><TBODY><TR><TD>Contact assignment in connector -A-</TD></TR></TBODY></TABLE><TABLE class="cc abstand-standard erlaeutrg-leg"><TBODY><TR><TD class=einzug-nummer>1 - </TD><TD>Positive (terminal “15”)</TD></TR></TBODY></TABLE><TABLE class="cc abstand-liste erlaeutrg-leg"><TBODY><TR><TD class=einzug-nummer>2 - </TD><TD>Negative (terminal “31”)</TD></TR></TBODY></TABLE><TABLE class="cc abstand-liste erlaeutrg-leg"><TBODY><TR><TD class=einzug-nummer>3 - </TD><TD>Signal wire to operating and display unit, Climatronic control unit -J255-</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>








Layout of air intake unit components



<TABLE class="cc abstand-standard erlaeutrg-explo"><TBODY><TR><TD class=einzug-nummer>1 - </TD><TD>Air intake unit assembly</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste></TD><TD></TD></TR></TBODY></TABLE><TABLE class="cc abstand-standard erlaeutrg-explo"><TBODY><TR><TD class=einzug-nummer>2 - </TD><TD>Air quality sensor -G238-</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste></TD><TD></TD></TR></TBODY></TABLE><TABLE class="cc abstand-standard erlaeutrg-explo"><TBODY><TR><TD class=einzug-nummer>3 - </TD><TD>Air intake unit water drain</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste></TD><TD></TD></TR></TBODY></TABLE><TABLE class="cc abstand-standard erlaeutrg-explo"><TBODY><TR><TD class=einzug-nummer>4 - </TD><TD>Grille in front of fresh-air intake</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste>q </TD><TD>Removing and installing → Chapter</TD></TR></TBODY></TABLE>
Note
<TABLE class="cc abstand-liste-erster einzug-explo hinweis-rumpf"><TBODY><TR><TD>Depending on the version, a dust filter designed to stop the fresh air blower drawing in dust and sand may be fitted instead of the intake grille for certain countries with a high dust level in the ambient air (e.g. for China) → Electronic parts catalogue.</TD></TR></TBODY></TABLE><TABLE class="cc abstand-standard erlaeutrg-explo"><TBODY><TR><TD class=einzug-nummer>5 - </TD><TD>Connectors to air intake housing</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste>q </TD><TD>Design and pin assignment → Current flow diagrams, Electrical fault finding and Fitting locations</TD></TR></TBODY></TABLE><TABLE class="cc abstand-standard erlaeutrg-explo"><TBODY><TR><TD class=einzug-nummer>6 - </TD><TD>Air intake unit without upper cover</TD></TR></TBODY></TABLE><TABLE class="cc abstand-standard erlaeutrg-explo"><TBODY><TR><TD class=einzug-nummer>7 - </TD><TD>Air flow flap control motor -V71-</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste>q </TD><TD>With air flow flap control motor potentiometer -G113-</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste>q </TD><TD>Removing and installing → Chapter</TD></TR></TBODY></TABLE><TABLE class="cc abstand-standard erlaeutrg-explo"><TBODY><TR><TD class=einzug-nummer>8 - </TD><TD>Fresh-air intake duct temperature sensor -G89-</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste>q </TD><TD>Removing and installing → Chapter</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste>q </TD><TD>Checking → "Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste>q </TD><TD>The measured value is evaluated by the operating and display unit, Climatronic control unit -J255- → "Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051.</TD></TR></TBODY></TABLE><TABLE class="cc abstand-standard erlaeutrg-explo"><TBODY><TR><TD class=einzug-nummer>9 - </TD><TD>Fresh-air blower control unit -J126-</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste>q </TD><TD>Removing and installing → Chapter</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste>q </TD><TD>Fresh-air blower control unit -J126- is actuated by operating and display unit, Climatronic control unit -J255- by way of air conditioner data bus system “Lin bus” → "Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste>q </TD><TD>The air conditioner data bus system “Lin bus” is used for the exchange of information between the operating and display unit, Climatronic control unit -J255- and the fresh air blower control unit -J126- → "Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051.</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste>q </TD><TD>Checking → "Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051</TD></TR></TBODY></TABLE><TABLE class="cc abstand-standard erlaeutrg-explo"><TBODY><TR><TD class=einzug-nummer>10 - </TD><TD>Fresh air blower -V2-</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste>q </TD><TD>Removing and installing → Chapter</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste>q </TD><TD>Checking → "Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051</TD></TR></TBODY></TABLE><TABLE class="cc abstand-standard erlaeutrg-explo"><TBODY><TR><TD class=einzug-nummer>11 - </TD><TD>Air recirculation flap control motor -V113-</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste>q </TD><TD>With air recirculation flap control motor potentiometer -G143-</TD></TR></TBODY></TABLE><TABLE class="cc einzug-explo abstand-explo "><TBODY><TR><TD class=einzug-liste>q </TD><TD>Removing and installing → Chapter</TD></TR></TBODY></TABLE>