Read Measuring Value Block (Function 08)

All functions which could previously be performed with V.A.G. 1551 can also be performed with the tester VAS 5051.

The control module can transfer a considerable amount of test data. This test data delivers information on the operational condition of the system and/or sensors connected to it. In many cases the data supplied aids the technician in both troubleshooting and corrective action. Because all the information cannot be evaluated at the same time, the test data has been summarized into single display groups, containing information which can be selected using display group numbers.

^ Connect VAG 1551 scan tool and insert "Brake Electronics" address word 03 with ignition switched on.





Indicated on display
^ Press buttons -0- and -8- to select "Read Measuring Value Block" function 08.





^ Indicated on display
^ Press -Q- button to confirm input.





Indicated on display
^ Input display group number go to list of selectable display group numbers.

Safety precautions
Observe following if test and measuring instruments are required during test drive;
^ Test and measure instruments must be secured to rear seat and operated by a second person from this location.
^ When test and measuring instruments are operated from the front passenger seat there is a danger that the person sitting there could be injured in an accident when the airbag is triggered.





List of selectable display group numbers (Part 1 of 3)





List of selectable display group numbers (Part 2 of 3)





List of selectable display group numbers (Part 3 of 3)

1) Four-wheel drive vehicles with haldex coupling only.
2) Vehicles with automatic transmission only.

Test sequence and test tables with measured values.

Checking wheel speed sensor allocation
Display group 001
- Press buttons -0-, -0- and -1- to input display group number 1 (001).
- Press -Q- button to confirm input.





- There are always 4 display fields (arrows) in the display group. Description of the individual values in display fields 1 - 4 can be found in the table.





Indicated on the display (vehicle stationary)
- Press -C- button for next display group number entry.
If the (arrow) button is pressed, buttons -0- and -8- ("Read Measuring Value Block") Must be pressed again to regain entry.








Read Measuring Value Block 1

Checking Wheel Speed Sensor
Display group 002
The measured value block for display group 002 must be read when the vehicle is being driven slowly. ABS control module -J104- saves the first usable voltage signal from the wheel speed sensor and displays this value in the display group. The values are displayed on the VAG1551 when the vehicle is being driven slowly.
- Press buttons -0-,-0- and -2- to input group number 2 (002).
- Press -Q- button to confirm input.





There are always 4 display fields (arrows) in the display group. Descriptions of the individual values in display fields 1 - 4 can be found in the Table.





Indicated on display (vehicle stationary)
- Press -C- button for next display group number entry.

If the (arrow) button is pressed, buttons -0- and -8- ("Read Measuring Value Block") must be pressed again to regain entry.

For display group number 002 remember.
^ The reading of measured value blocks in display group number 002 must be undertaken when driving off slowly. Then the control module -J104- will store the first usable voltage signals provided by the speed sensors and display these as a fixed value in the measured value block.








Display group 003
^ Press buttons -0-, -0- and -3- to input display group number 3.
^ Press -Q- button to confirm input.





^ There are always 4 display fields (arrows) in the display group. Descriptions of the individual values in display fields 1 - 4 can be found in the table.





Indicated on display
^ Press -C- button for next display group number entry.

If the (arrow) button is pressed, buttons -0- and -8- ("Read Measuring Value Block") must be pressed again to regain entry.





Read Measuring Value Block 3