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299D2DC2 SKID STEER E459-2 DOES START AT ALL

ramoscosof

New Member
Joined
Oct 18, 2023
Messages
1
Location
Peru
Serial Number: FD204176
Hi everyone, the information that I have It's just the alternator was changed once.
I cleaned all grounds, released the engine harness, I fix the temperature sensor 3 wires broken.
I tested power relay ECM, this has power in pin 1 but no ground pin 2. I grounded it but there is a message engine ecm data invalid also the DEF sistem does work too. Please if somebody can help I really appreciate it.
 

heymccall

Senior Member
Joined
Feb 19, 2007
Messages
5,827
Location
Western Pennsylvania
Like this?
 

Simon C

Senior Member
Joined
Jul 1, 2015
Messages
1,716
Location
Rocky Mountain House , AB., Canada
Occupation
Heavy Equipment Mechanic
Ground connections are part of routine maintenance on new electonic engines.
I fixed a Dodge 5500 Ram that dash was wonky, would not run properly ,was only 1 year old .
Thought I would start at Battery connections. and all fender and frame grounds, that some were corroded all ready. Computer ground straps need to be very clean also.
Then coat with some Deep Creep spray or Fluid Film or something similiar.
Always a good place to start. My Chev 3500 was wonky on instrumentation panel so cleaned all the connections I could find and all is good now.
Thats what I have found.
Simon C
 

DieselFit

Active Member
Joined
Nov 27, 2023
Messages
34
Location
Australia
Hi, I just had to locate the cause of the E459-2 code on my friend's 289D. Thanks to the several threads on this site, I was able to look for and find broken C903 Blue wire near the connector on LHS of firewall under cab. Goes to pin 27 on that connector. It is the earth for the coil on the engine ECM power relay.
 

bsievers926

New Member
Joined
Apr 29, 2025
Messages
1
Location
Iowa USA
having the same 459 code on a 299d xhp wondering if anyone has the engine and ecm wiring diagrams so i can start racing ground wires. PIN is CAT0299DCJST01292
 
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