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#7294 06/06/13 07:45 PM
Joined: Jan 2010
Posts: 87
J
Jim
Offline
journeyman
journeyman
J Offline
Joined: Jan 2010
Posts: 87
i have a 2925 fault logged. pressing the ucm rst button wont reset it. do i have to reset a parameter back to 0 like the 355 controls befote it will run again?

Joined: Oct 2010
Posts: 280
G
GreenPants
GreenPants
G Offline
Joined: Oct 2010
Posts: 280
why did it go on UCM? any other faults?place car on MR insp, hold the ucm reset button(middle of board toward the bottom) an you should hear the ucm relay pull in and then push the mcss cpu reset button or por.

Joined: Jan 2010
Posts: 87
J
Jim
Offline
journeyman
journeyman
J Offline
Joined: Jan 2010
Posts: 87
no dice. 2908 error too. ucm and ucmx didnt pick when ucm rst pressed. no display on the drive either. this occurred after somebody manually tripped the gos with the car on inspection.

Joined: Aug 2011
Posts: 563
U
addict
addict
U Offline
Joined: Aug 2011
Posts: 563
I recall 2908 having something to do with a controller type but not sure if its relevant to this type.

Joined: May 2012
Posts: 94
B
journeyman
journeyman
B Offline
Joined: May 2012
Posts: 94
try holding the gov test switch for about 5 sec. then hit the ucm the the reset.

Joined: Jan 2012
Posts: 909
jkh Offline
4 Ever Learning.
4 Ever Learning.
Joined: Jan 2012
Posts: 909
Jim,
You may want to check your wiring from gov to the I/o board.


Make good choices,

JKH
Joined: Aug 2012
Posts: 132
E
member
member
E Offline
Joined: Aug 2012
Posts: 132
Does it have a switch on the governor tail sheave?Tripping that usually gave me a ucm.

Joined: Jan 2012
Posts: 120
T
member
member
T Offline
Joined: Jan 2012
Posts: 120
I agree, with Elevatedone. Also make sure your safety stuff is not jumped out. When the car is reset it does a self check, you will get this fault.

Joined: May 2012
Posts: 194
L
Len Offline
member
member
L Offline
Joined: May 2012
Posts: 194
If It is 411/MMS or a Gen2...no display on the drive..is not a good thing..whatever the fault on the MCSS there should always be a display on the drive...


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