Case 621b xt - transmission control module

vendredi 18 avril 2014

Been thru a lot of testing with this loader over the last few weeks



Unit has not forward or reverse control



FNR switch all checked. Clutch circuit is ok



Done the complete checks of the module but I get NO POWER to the solenoids

Pin22 has voltage, grounds on module are now ok



Cannot get voltage on pins 14,15,31,32,33 of module when going through the FNR testing stated in the manual



When KON on loader, I get a single click , pause, then 3 clicks.



I read in here only two click indicates all checks are ok - but 4???



Now the strangest thing is that the solenoids all measure EXACTLY 87.3 ohms. when tested independently. Manual state anything from 87 to 100 ohms at 20 C (68F) is ok



I am leaning to believe the module may be faulty



Can these be checked, or is there an electrical schematic for these units available???



Any assistance would be appreciated



cheers

O




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