audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 5765 > < How to Find Wiring Diagrams|Page 5761
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Air Flow Meter/Sensor: Testing and Inspection
With Manufacturer's Scan Tool

Checking Voltage Supply To Mass Air Flow (MAF) Sensor

Test requirements:

-

Fuse for mass air flow (MAF) sensor OK.

-

Fuel pump relay OK; See: Fuel Delivery and Air Induction/Fuel Pump/Fuel Pump Relay/Testing and Inspection

NOTE:  Voltage supply to mass air flow (MAF) sensor is from fuel pump relay.

-

Remove cover -1- on right in engine compartment.

-

Disconnect connector (arrow) to mass air flow (MAF) sensor.

-

Connect multimeter as follows to measure voltage.

Connector

Measure to

terminal

2

Engine ground

-

Operate starter briefly.
-

Specified value: approx. battery voltage

With Manufacturer's Scan Tool|Page 5765 > < How to Find Wiring Diagrams|Page 5761