Engines / Petrol / MED 17.5 CAN general / Test of cruise control

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Mark	Model	Control unit	Diagnostic operation

Mark

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:
- on-board voltage > XXV
- cruise control - activated

connect with the control unit XX - engine

cruise control - status - Test

XX - Measured values group XXX
required values: field X
xxxxXxxx = CCS permitted
xxxXxxxx = ACC permitted
xxXxxxxx = cruise control - switch - ON
XXxxxxxx = CCS - status

if values are not achieved - check component: cruise control, line CAN-Bus

cruise control button - Test

XX - Measured values group XXX
required values: field X
XxxxXXXX = pressed - ON
XxxxXXXX -> XxxxXXXX = pressed - ON -> OFF
XxxxXXXX = pressed - OFF
xxxxXXXx = pressed - set
xxxxXXXx = pressed - reset

if values are not achieved - check component: cruise control, line CAN-Bus

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