Thanks for your help (though this appreciation is ironic because nobody ever answered me my emails and comments).I document the problem related to error code 222 (Crown RR5000 series) to help someone diagnose the fault because I do not want to be selfish with the knowledge I acquired these days.I commented that fails M2 detect when the engine turned, but not expelled fluid. We initially that was broken shaft or the pump is worn inside but the failure was that the spline shaft of the pump (which is coupled to the motor) was totally worn, moisture apparently originated or other factor that the shaft oxide and eventually wear severely. We replace the pump with a new one and problem solved. Additional topic that is important to state that gave us clues to the origin of the problem was when I measured the current feeding the motor M2 is rising much for normal parameters.