Passat GLS L4-1.8L Turbo (AUG) (2001)
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Connect multimeter to terminal 4 of connector and engine Ground (GND) for voltage measurement: Specification: 4.5 to 5.5 V
If there is no voltage:
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Switch ignition off.
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Check signal and Ground (GND) wires.
Checking Signal and Ground Wires for Mass Air Flow (MAF) Sensor
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Connect VAG 1598/31 adapter cable to control module wiring harness. Engine Control Module (ECM) is not connected.
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Check wires between test box and 5-pin connector for open circuits according to wiring diagram.
Terminal 5 + socket 29
