Audi / A3 (8L) / 03 - brake electronics / ESP function test (Conti Teves)

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Mark	Model	Control unit	Diagnostic operation

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Select a vehicle make or a common group such as Service Intervals, Engines, Transmissions, Immobilizers and Independent Heaters.

Model

Control unit Select the desired control unit as accurately as possible. The UDS identifier EV_xyz can be found in the VCDS after connecting to the control unit and then in the Extended Identification.

Select the desired control unit as accurately as possible. The UDS identifier EV_xyz can be found in the VCDS after connecting to the control unit and then in the Extended Identification.

Diagnostic operation Select the desired diagnostic procedure.

Diagnostic procedure

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Conditions:
- system indicator light: ABS (KXX) - on
- system indicator light: ASR (KXXX) - off
- engine speed = idling
- vehicle at idle

Note:
- the ESP drive test is used to check the reliability of the signals from the lateral acceleration sensor, rotation speed and pressure sensor
- this test must also be done always upon disassembly, or replacement of ESP system components
- as soon as the ESP road starts, it is not possible to cancel it. The entire procedure must run

depress brake pedal

desired condition:
brake fluid pressure > XX bar
system indicator light: ASR (KXXX) - on

sharply turn left and then right at a minimum angular speed of XX°/s (turning radius XX - XXm speed XX- XX km/h)

desired condition:
system indicator light: ABS (KXX) - off

end

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