A8L Quattro Sedan W12-6.0L (BSB) (2005)
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Check specified value of air flow quantity at Mass Air Flow Sensor at idle:
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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 Mass Air Flow (MAF) Sensor (G70) voltage supply.
If specification is not obtained:
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Check signal and Ground (GND) wires of Mass Air Flow (MAF) Sensor (G70).
Voltage Supply of Mass Air Flow Sensors, Checking
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Disconnect corresponding 5-pin connector from Mass Air Flow (MAF) Sensor (G70) to be tested:
‹› 5-pin connector - arrow - from Mass Air Flow (MAF) Sensor (G70) with cylinder bank 1 Intake Air Temperature (IAT) Sensor (G42).
‹› Cylinder bank 1 with cylinders 1 through 6 is located at right in direction of travel.
‹› Mass Air Flow (MAF) sensor (G70) with cylinder bank 1 Intake Air Temperature (IAT) Sensor (G42) is located left in direction of travel.
‹› 5-pin connector - 1 - from Mass Air Flow (MAF) sensor 2 (G246) with cylinder bank 2 Intake Air Temperature (IAT) Sensor 2 (G299).