TT Quattro Coupe L4-1.8L Turbo (BEA) (2003)
Voltage supply for Mass Air Flow (MAF) sensor, checking
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Disconnect connector from Mass Air Flow (MAF) sensor.
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Connect multimeter for voltage measurement as follows.
Harness connector
Measure to
Terminal
2
Engine Ground (GND)
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Operate starter briefly.
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Specification: approx. battery voltage
NOTE: Voltage is supplied to Mass Air Flow (MAF) sensor from Fuel Pump (FP) relay.
If specified value is not obtained:
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Check wire connection from terminal 2 of connector to Fuel Pump (FP) relay via fuse for open circuit and short circuit to Ground (GND):
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Repair open circuit or short circuit if necessary.