With Manufacturer's Scan Tool

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







Special tools and equipment
- VAG 1526A
- VAG 1594A
- VAG 1598/31
- VAS5051 with VAS5051/1

Test requirements:
- Coolant temperature at least 80 degree C.
- Electrical accessories switched off (coolant fan must not run during the test).
- Air conditioning switched off.


Checking function
- Connect testing and information system VAS5051 and select vehicle system "01 -Engine electronics". Engine must be running at idling speed. Connecting VAS 5051 Scan Tool

Display on VAS5051:







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


Display on VAS5051:







1 - Enter display group max. input value = 255
- Enter "002" for "display group number 002" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051:







- Activate basic setting by pressing -A- button.
- Check specifications for load recognition in display zones -3- and -4-.

Display Group 002:

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


Evaluation of display group 002

Display Zone 3 - 4: