125000501 - D71 CRUISE CONTROL RECALL CONTROL NOT WORKING

After deactivating the Cruise Control system by pressing the brake/clutch pedal, using the ''RESUME'' button on the Cruise Control, the speed set previously is not restored.
Results of the tests
1CHECK ON RESUME COMMANDAll OKProblems metOperation
Check that the Cruise Control contacts work properly in the RESUME positionContinue to Step 2Lack of continuityReplace the steering column switch unit lever with the Cruise Control lever incoroporated Op.    Op. 5580A10 CRUISE CONTROL LEVER ASSEMBLY - R+R
2CHECK CONNECTIONS TO ENGINE MANAGEMENT CONTROL UNITAll OKProblems metOperation
With the ignition ON and the Cruise Control ON and RESUME, check that there is a voltage signal from the Cruise Control system to the engine management control unit See    See E5060 CRUISE CONTROLContinue to Step 3No voltage foundRestore the connections See    See E5060 CRUISE CONTROL
3CHECK ON CORRECT OPERATIONAll OKProblems metOperation
1.9 JTD 16VCheck that the fault is no longer presentEnd of diagnosisFault persists: control unit defectiveReplace the engine management control unit Op.    Op. 1060G80 DS ELECTRIC INJECTION CONTROL UNIT - R R
2.0 JTS3.2 V6Check that the fault is no longer presentEnd of diagnosisFault persists: control unit defectiveReplace the engine management control unit Op. 1056B82