champion 736a with Volvo powershift motor grader wont move. Brake failure light flashes intermittently and relay clicking in armrest (fuse panel area). Swapped relay with another known good relay and same issue. Machine started having issues with defaulting to neutral when using. If machine was shut off and left alone for 10-15 minutes machine would drive again. Tested alternator, system voltage in operating range. Checked all machine grounds. Transmission Solenoid resistance values 28-29 ohms spec is 28.8 +- 5%. Volvo dealer not interested in working on or getting back with information.