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Audi Workshop Service and Repair Manuals

OXS System - Checking Procedure|Page 2835 > < OXS System - Checking Procedure
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Do not connect any other test leads to engine and disregard figures shown in "RPM" window.

FIGURE 2 - FUSE/RELAY PANEL

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remove fuel pump relay from fuse panel. (see arrow, Fig. 2)

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US 4480/3 switched OFF

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connect US 4480/3 to fuse panel in place of fuel pump relay

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remove connector and bridge terminals at enrichment terminal plug located in heater pipe behind water pump

FIGURE 3

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remove yellow marked vacuum hose from thermo-pneumatic valve (arrow, Fig. 3)

FIGURE 4

OXS System - Checking Procedure|Page 2835 > < OXS System - Checking Procedure