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A25C Transmission going to neutral after taking foward or reverse

toot1967

Member
Joined
Aug 30, 2016
Messages
6
Location
georgia
Occupation
Heavy Equipment Mechanic
A25C goes into gear. after operating 10 to 15 minutes will drop forward or reverse and go to neutral. throws code 432 (problem with wiring or solenoid ZM2 F-clutch). performed ohm test on wiring harness starting at ECM. ohm value out of spec for ZM2 solenoid. Values would be high when machine is hot and will below spec when machine is cold. felt like problem was solenoid. replaced, still same problem. about to start pulling wiring harness. does anyone have solenoid location diagram and suggestions before I snatch wiring out
 

John C.

Senior Member
Joined
Jun 11, 2007
Messages
12,870
Location
Northwest
Occupation
Machinery & Equipment Appraiser
Make, model and serial number would be a good first place to start. With your description one can only guess that you are working on a Volvo truck.
 

sfrs4

Senior Member
Joined
Jul 22, 2013
Messages
697
Location
Great Britian
Occupation
parts admin
take a look at the pdf, that is the location of the (F) solenoid.
suggestion, check where the loom pass's through and out the back of the cab, it often rub's there.
 

Attachments

  • A25C 701 box control.pdf
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