Read Measuring Value Block (Function 08)

Read Measuring Value Block (function 08)
The control module can transmit numerous measured values. These measured values provide information about the operational status of the system and the sensors connected to it. In many cases the data supplied can be used to troubleshoot and repair malfunctions. Because these measured values cannot all be evaluated simultaneously, they are organized into individual display groups that can be selected via display group numbers.
^ Connect VAG1551 Scan Tool (ST), enter address word "03 Brake Electronics" and continue until "Select function XX" is indicated on display from, Refer to VAG1551 Scan Tool (ST), Connecting and Selecting Functions





Indicated on display:
^ Press buttons -0- and -8-. This selects "Read Measuring Value Block" function 08.





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





Indicated on display:
^ Enter display group number, Refer to Overview of selectable display group numbers.

Overview of selectable display group numbers





Test sequence and test tables with measured values
Display group number 001
^ Press buttons -0-, -0- and -1-.
^ Press -Q- button to confirm input.





^ Measuring value block always has 4 display fields (arrows). Values 1 to 4 in the individual display fields can be interpreted according to the following test table.

Use button -1- to select the next lower display group number in sequence; use button -3- to select the next higher display group number.

Press the (arrow) button to manually enter the next display group number. After this, the work sequence "Read Measuring Value Block" must be reinitiated using buttons -0- and -8-.

Note: For display group number 001:
The current wheel speeds are indicated. This is useful for checking wheel speed sensor allocation by wheel. (Vehicle must be raised and a second technician must turn wheel by hand)





1) On Board Diagnostic (OBD) will be terminated by the ABS control module -J104- if road speed exceeds 19 km/h.

Display group number 002





Indicated on display:
^ Press buttons -0-, -0- and -2-.
^ Press -Q- button to confirm input.





^ Measuring value block always has 4 display fields (arrows). Values 1 to 4 in the individual display fields can be interpreted according to the following test table.

Use button -1- to select the next lower display group number in sequence; use button -3- to select the next higher display group number.

Press the (arrow) button to manually enter the next display group number. After this, the work sequence "Read Measuring Value Block" must be reinitiated using buttons -0- and -8-.





Display group number 003
Measuring value block display group 003 should be read with engine running





Indicated on display:
^ Press buttons -0-, -0- and -3-.
^ Press -Q- button to confirm input.





^ Measuring value block always has 4 display fields (arrows). Values 1 to 4 in the individual display fields can be interpreted according to the following test table.

Use button -1- to select the next lower display group number in sequence; use button -3- to select the next higher display group number.

Press the (arrow) button to manually enter the next display group number. After this, the work sequence "Read Measuring Value Block" must be reinitiated using buttons -0- and -8-.

Note: For display group number 003:
Measuring value block display group 003 should be read with engine running.





Display group number 004





Indicated on display:
^ Press buttons -0-, -0- and -4-.
^ Press -Q- button to confirm input.





^ Measuring value block always has 4 display fields (arrows). Values 1 to 4 in the individual display fields can be interpreted according to the following test table.

Use button -1- to select the next lower display group number in sequence; use button -3- to select the next higher display group number.

Press the (arrow) button to manually enter the next display group number. After this, the work sequence "Read Measuring Value Block" must be reinitiated using buttons -0- and -8-.