Brake Fluid Pressure Sensor/Switch: Adjustments

Sensor for brake pressure, zeroing
(ABS/ESP ITT Mark 20)

Brake pedal not depressed.

- Check the measured values using "Read Measuring Value Block" function 08, Display group number 5.

First perform "Login-Procedure" function 11 successfully using the VAG1551 Scan Tool (ST)

Rapid data transfer HELP
Select function XX
Indicated on display

- Press buttons -0- and -4-. (04 selects "Initiate basic setting", function 4.)

Rapid data transfer Q
04 - Basic Setting
Indicated on display:

- Press -Q- button to confirm input.

Basic Setting HELP
Input display group number XXX
Indicated on display:

- Press buttons -0-, -6- and -6-.
- Press -Q- button to confirm input.

ABS warning light -K47- blinks.

Function is unknown or - ->
cannot be carried out at the moment

If this appears in display, the "Login-Procedure" has not been successfully completed.

System in Basic Setting 66
Comparison OK. - 0.85bar - 2.12bar
Indicated on display:

After successfully zeroing, the value indicated does not become 0.00 bar

System in Basic Setting 66
Comparison n.possible - 10.85bar - 12.12bar

or

Rapid data transfer HELP
Insert address word XX

If this appears in display, the measured values are not within the zeroing procedure's permitted range of -2 bar to 8 bar.
1. Check DTC memory (function 02)
2. Erase DTC memory (function 05)
3. End Output (function 06)
4. Switch ignition off.
5. Switch ignition on.
6. Then repeat zeroing.

- Press -> button.

Indicated on display

- Press buttons -0- and -6- to end output.

Rapid data transfer Q
06 End Output
Indicated on display

ABS and ESP warning lamps light up for approx. 2 seconds.