GTI V6-2792cc 2.8L DOHC (AAA) (1996)
Mass Air Flow Sensor: Testing and Inspection
Special tools, testers and auxiliary items
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VAG 1551/1552 scan tool with VAG 1551/3 adapter cable.
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VAG 1598/18 test box.
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Multimeter (Fluke 83 or equivalent).
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Connector test kit VW 1594.
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Wiring diagram.
Test conditions:
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Electrical consumers switched off (radiator coolant fan must not run during the check).
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A/C switched off.
Test sequence:
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Engine running at idle.
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Connect VAG 1551/1552 scan tool and select "Engine Electronics" address word 01. See: Testing and Inspection
Indicated on display
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Press buttons -0- and -8- to select "Read Measuring Value Block" function 08 and press -Q- button to confirm input.
Indicated on display
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Press buttons -0-, -1- and -5- to input display group 015 and press -Q- button to confirm input.
Indicated on display (1-4 = Display fields)
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Check load registration specifications 1 (display fields 2 and 3).
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Press -C- button
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Press buttons -0-, -1- and -5- to input display group 015 and press -Q- button to confirm input.
Indicated on display (1-4 = Display fields)
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Check load registration specifications 2 (display field 3).