Mass Air Flow (MAF) Sensor -G70-, Checking

Mass Air Flow (MAF) Sensor -G70-, Checking







Special tools and workshop equipment required

- V.A.G 1526 A Multimeter.
- V.A.G 1594 A Connector test kit.
- V.A.G 1598/31 Test Box.
- VAS 5051 Diagnostic operation system.
- VAS 5051/1 Adapter.

Test requirements:

- Coolant temperature at least 80 degree C.
- Electrical consumers switched off (radiator fan must not run during the test).
- Air conditioning switched off.

Checking function

- Connect vehicle diagnostic, testing and information system VAS 5051 and select vehicle system "01 - Engine electronics" in selection. Engine must be run at idle speed. Connecting VAS 5051 Scan Tool

Display on VAS 5051:







- Under -1- select diagnostic function "04 - Basic setting".


Display on VAS 5051:







1 - Enter display group
- Enter "002" for "display group number 002" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS 5051:







- Activate basic setting by pressing - A- button.
- Check indication in display fields -3- and -4-.

Display Group 002:

- Exit function "04 - Basic setting" by pressing <- button.

Evaluation of display group 002

Display Zone 3 - 4: