Volkswagen Workshop Manuals
Eos (1F7) V6-3.2L (BUB) (2008)
Powertrain Management > Sensors and Switches - Powertrain Management > Sensors and Switches - Fuel Delivery and Air Induction > Air Flow Meter/Sensor > Component Information > Technical Service Bulletins > Page 2646
Air Flow Meter/Sensor: Testing and Inspection
Mass Air Flow Sensor G70, Checking
‹› Use only gold-plated terminals when servicing terminals in harness connector of Mass Air Flow (MAF) Sensor (G70).
Special tools, testers and auxiliary items required
‹› Wiring diagram.
‹› The Mass Air Flow (MAF) Sensor (G70)/Intake Air Temperature (IAT) Sensor (G42) Fuse 10 (on fuse panel B) (SB10) OK.
‹› Battery voltage at least 12.5 volts.
‹› All electrical consumers such as, lights and rear window defroster, switched off.
‹› Vehicles with automatic transmission, shift selector lever into position " P" or "N".
‹› A/C switched off.
‹› Ground (GND) connections between engine/transmission/chassis OK.
‹› Coolant Temperature at least 80° C.
‹› Ignition switched off.
Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Computers and Control Systems/Testing
Connect the scan tool.
Start engine and let it run at idle.
Using the scan tool, Check the air flow quantity of the Mass Air Flow (MAF) Sensor (G70) at idle:
End diagnosis and switch ignition off.
If the specified value was obtained, but the DTC memory has a DTC concerning the Mass Air Flow (MAF) Sensor (G70):
Check the voltage supply of the Mass Air Flow (MAF) Sensor (G70).
If specified value was not obtained:
Check the wiring of the Mass Air Flow (MAF) Sensor (G70).
Checking voltage supply
Disconnect the Mass Air Flow (MAF) Sensor (G70 ) electrical harness connector - 3 -.
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