JD 770CH 1999

EricC

Hero Member
Joined
Nov 14, 2006
Messages
429
Likes
3
Points
18
Location
Tulsa, OK
Website
facebook.com
#1
Grader is going to neutral and setting a F393 any time any load is applied beyond just driving it. I have the operator manual and the repair manuals, but neither list this code. Unfortunately, no technical manuals available. Google gave me hydrostatic pump speed sensor circuit but this grader doesn't have HFWD. Anyone have any thoughts, or recommendations? Does the engine speed sensor only provide input to the TCU for anti-stall reference?
 

nickb2

Wrench. Diagnostic Tech.
Joined
Nov 22, 2008
Messages
8,456
Likes
134
Points
63
Location
St-Hyacinthe, Quebec, Canada
#2
Je suis Quebecois, here is a pdf 4 u

http://elvin5.blogspot.ca/2008/06/john-deere-transmission-controller.html

Plz read all good stuff here on this site :thx
 

Attachments

EricC

Hero Member
Joined
Nov 14, 2006
Messages
429
Likes
3
Points
18
Location
Tulsa, OK
Website
facebook.com
#3
nickb2 said:
Je suis Quebecois, here is a pdf 4 u

http://elvin5.blogspot.ca/2008/06/john-deere-transmission-controller.html
Merci. I have the machine specs already. Was hoping to find someone with the tech manuals or experience with this code or failure type.
 

nickb2

Wrench. Diagnostic Tech.
Joined
Nov 22, 2008
Messages
8,456
Likes
134
Points
63
Location
St-Hyacinthe, Quebec, Canada
#8
Je suis interested 8) Je vais checker ton cas aujourd'hui :thx

J'ai un ami qui pourrais te aider. Donc on parle bien de un john deer 770ch 99?

J'ai plus mon chien, mais je suis tres pres a te aider. Avec mon chien je aimais faire du char a bois :thx

La seule raison que je voit par rapport au manque de comunication est un mauvais ground ou quelque chose de semblamb :eek:
 

nickb2

Wrench. Diagnostic Tech.
Joined
Nov 22, 2008
Messages
8,456
Likes
134
Points
63
Location
St-Hyacinthe, Quebec, Canada
#9
EricC said:
Grader is going to neutral and setting a F393 any time any load is applied beyond just driving it. I have the operator manual and the repair manuals, but neither list this code. Unfortunately, no technical manuals available. Google gave me hydrostatic pump speed sensor circuit but this grader doesn't have HFWD. Anyone have any thoughts, or recommendations? Does the engine speed sensor only provide input to the TCU for anti-stall reference?
Non, le circuit en question ne donne aucune reference/ A tu de la misere a ponger le code? Je consider beaucoup ton trouble.

Quelle outils/scanner qque tu utilize?

J'ai due modifie mon recit, desoler, a tu checker les 12volts au PCM?

Je sais que du droit travaillerz :ROFL

Si tu veut, appelle moi, un homme a besoin de faire $$