Passat V6-2.8L (ATQ) (2004)
Continuation for all vehicles
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End diagnosis and switch ignition off.
If specified value is obtained, but DTC memory has a DTC concerning Mass Air Flow (MAF) sensor -G70-:
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Check voltage supply of Mass Air Flow (MAF) sensor -G70-.
If specified value is not obtained:
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Check signal and Ground (GND) wires of Mass Air Flow (MAF) sensor.
Voltage supply for Mass Air Flow (MAF) sensor -G70-, checking
Vehicles with engine code AHA
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Disconnect 3-pin connector from Mass Air Flow (MAF) Sensor -G70-.
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Connect multimeter to terminal 3 of connector and engine Ground (GND) for voltage measurement.
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Switch ignition on.
Specified value: at least 11.5 V
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Switch ignition off.
If there is no voltage:
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Check wire between 3-pin connector terminal 3 and relay carrier for open circuit according to wiring diagram.
Wire resistance: max. 1.5 ohms
Vehicles with engine code ATQ
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Disconnect 4-pin connector from Mass Air Flow (MAF) Sensor -G70-.
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Connect multimeter to terminal 3 of connector and engine Ground (GND) for voltage measurement.
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Start engine, and let run at idle.
Specified value: 11.0 to 15.0 V
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Switch ignition off.
If there is no voltage:
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Check wire between 4-pin connector terminal 3 and Fuel Pump (FP) Relay -J17- for open circuit according to wiring diagram.
Wire resistance: max. 1.5 ohms
Continuation for all vehicles
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Check signal and Ground (GND) wires of Mass Air Flow (MAF) sensor.