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Brake Light Disable Relay -J508- and Brake Recognition Switch -F83-, Checking



Brake light disable relay -J508- and brake recognition switch -F83-, checking
(ABS/ESP ITT Mark 20)

Connect VAG1551 scan tool and select the control module for brake electronics with ignition switched on (address word 03).

Rapid data transfer HELP
Select function XX
Indicated on display

- Switch engine on.
- 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-, -3- and -1-.
- Press -Q- button to confirm input. ABS warning light -K47- blinks.

System in Basic Setting 31
Magnetic coil activated
Indicated on display:

- Press button -3-

System in Basic Setting 32
9.13bar 7.43bar Not operated.
Indicated on display:

Do not operate brake pedal

- Press button -3-

System in Basic Setting 33
Operate pedal and hold ...
Indicated on display:

Depress pedal with high pressure by foot and maintain.
Brake lights light up

If brake lights do not light up:
Brake light disable relay (ESP) -J508- faulty
Brake recognition switch (ESP) -F83- faulty, Electrical test, test step no. 23

- Press button -3-

System in Basic Setting 34
86.27bar 83.48bar Operated
Indicated on display:

- Press button -3-

System in Basic Setting 35
Release brake
Indicated on display:

- Remove foot from brake pedal.
- Press button -3-

System in Basic Setting 36
- 0.85bar - 1.91bar Not operated.
Indicated on display:

- Press button -3-

System in Basic Setting 37
Magnet-coil test completed
Indicated on display:

Press -> button.

Rapid data transfer HELP
Insert address word XX
Indicated on display

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

Rapid data transfer Q
06- End Output
Indicated on display