audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Checking Voltage Supply to Mass Air Flow (MAF) Sensor|Page 5552 > < Checking Voltage Supply to Mass Air Flow (MAF) Sensor|Page 5550
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Air Flow Meter/Sensor: Testing and Inspection
Mass Air Flow (MAF) Sensor -G70-, Checking

Mass Air Flow (MAF) Sensor -G70-, Checking

Special tools and equipment

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VAG 1526A

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VAG 1594A

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VAG 1598/31

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VAS5051 with VAS5051/1

Test requirements:

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Coolant temperature at least 80 degree C.

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Electrical accessories switched off (coolant fan must not run during the test).

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Air conditioning switched off. 

Checking function

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Connect testing and information system VAS5051 and select vehicle system "01 -Engine electronics". Engine must be running at idling speed. 
See: Testing and Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/Scan Tool Connecting and Initial Checks/Connecting VAS
5051 Scan Tool

Display on VAS5051:

Checking Voltage Supply to Mass Air Flow (MAF) Sensor|Page 5552 > < Checking Voltage Supply to Mass Air Flow (MAF) Sensor|Page 5550