audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Electronic Instrument Cluster - Repair & Troubleshooting|Page 3155 > < Electronic Instrument Cluster - Repair & Troubleshooting|Page 3153
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See Repair Manual Group 25

AIR FLOW SENSOR POTENTIOMETER

-

connect US 1119 between contact 29 and ground

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start engine and depress gas pedal briefly

-

measure voltage

^

voltage must increase from 0.0 V to maximum 4.5 V

If specified values are not obtained, - repair break in wiring according to wiring diagram OR
-

replace defective fuel mileage sender (air flow sensor potentiometer)

Note

Depending on RPM, the voltage on fuel mileage sender (air flow sensor potentiometer varies between 0.0 V to 4.5 V

Electronic Instrument Cluster - Repair & Troubleshooting|Page 3155 > < Electronic Instrument Cluster - Repair & Troubleshooting|Page 3153