Mass Air Flow (MAF) Sensor, Checking

Mass Air Flow (MAF) Sensor -G70- Checking







Special tools and equipment
- VAG1526A
- VAG1594A
- VAG1598/31
- VAS5051 with VAG5051/1
- or
- VAG1551 with VAG1551/3A

Test requirements:
- Coolant Temperature at least 80 °C.
- Electrical consumers switched off (radiator fan must NOT run during test).
- A/C switched off

Checking function
- Connect VAS5051 tester or VAG1551 scan tool and select control module for engine electronics using "address word" 01. Engine must run at idle. [1][2]Scan Tool Connecting and Initial Checks


When indicated on display


Rapid data transfer HELP
Select function XX


- Press buttons -0- and -4- to select "Initiate basic setting" and press -Q- button to confirm input.

When indicated on display


Basic Setting Q
Enter display group number XXX


- Press buttons -0-, -0- and -2- to select "display group number 002" and press -Q- button to confirm input.

When indicated on display


System in basic setting 2 ->
1 2 3 4


- Check specified values for load detection.

Display Group 002:

If specified value is obtained:
- Press button.

Indicated on display (function selection):


Rapid data transfer HELP
Select function XX


Evaluation display group 002

Display Field 3 - 4: