Reading
Read Measuring Value Block (Function 08)
NOTE:
- A/C control heads -E87- with part numbers without index letter have 10 measuring value blocks (display groups), each showing 4 measuring values (display fields).
- A/C control heads -E87- with part numbers including index letter "A", and onward have 11 measuring value blocks (display groups), each showing 4 measuring values (display fields).
- Regulation of the air conditioning remains functional during the On Board Diagnostic (OBD) Read Measuring Value Block" function 08 and the current measured values are displayed.
- Display groups 2 through 5 show the current actual or specified values and the learned values (stored during the last basic setting) for the end stops of the individual positioning motors.
- The positions of the positioning motors and flaps can be changed during the OBD using the control buttons on the A/C Control Head -E87-, and the current actual and specified values are displayed on the VAG 1551 Scan Tool (ST).
- If the printer is switched on, the current display will be printed out.
Read Measuring Value Block (Function 08), Initiating
- Start engine.
- Set A/C Control Head -E87- to AUTO mode (compressor is switched on).
- Allow fresh-air blower to run at high speed for approx. 1 minute (to allow positioning motors to settle into their final positions).
- Connect VAG 1551 Scan Tool (ST).
Scan Tool Connecting and Initial Checks
- Press buttons -0- and -8- to insert "AC/Heating Electronics" address word 08 and advance program until "Select function XX" appears on display.
Scan Tool Connecting and Initial Checks
Indicated on display
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -8- to select "Read Measuring Value Block" function 08.
Indicated on display
Rapid data transfer Q
08 - Read Measuring Value Block
- Press -Q- button to confirm input.
Indicated on display
Read Measuring Value Block
Input display group number XXX
- Input display group number.
- Press -Q- button to confirm input.
Indicated on display
Read Measuring Value Block X ->
1 2 3 4
To select another display group:
- Press -C- button.
Indicated on display
Read Measuring Value Block
Input display group number XXX
NOTE:
- Pressing the -3- button advances the program to the next display group.
- Pressing the -1- button moves the program back by one display group.
If all the display fields show the specified values:
- Input display group number.
- Press -> button.
Indicated on display
Rapid data transfer HELP
Select function XX
Overview Of Display Group Numbers Which Can Be Selected
