Caterpillar EP20KT:
Code 49

we have no drive or lift functions.
Code 49 comes on.
we dont have a service manual to follow as well.
  • Posted 26 Sep 2019 02:53
  • Discussion started by Daryl_Forrest
  • Manitoba, Canada
Showing items 1 - 5 of 5 results.
how do you test the currant sensor #3 ?
  • Posted 10 Oct 2019 09:13
  • Reply by Daryl_Forrest
  • Manitoba, Canada
hello s/n is ETB5B51200
just to update, we had the local cat dealer come out as we could not find anything on this. they said it needs the logic board. they supplied one to us and geuss what. same thing. code 49 the instant the machine powers up. we do have poewrsteering but no lift or drive?
  • Posted 10 Oct 2019 07:44
  • Reply by Daryl_Forrest
  • Manitoba, Canada
i would say both, make a visual check for any loose, disconnected, damaged wires or any other problems like worn out brushes or corrosion related issues, excess build up of carbon dust etc.
You can also use a vom to check the motor fields, and wiring through the harness etc.
Basic troubleshooting routine skills pretty much ;o)
  • Posted 27 Sep 2019 22:13
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
how do we test for wire breakage in pump motor? is this a visaul test or a electrical test with meter?
  • Posted 27 Sep 2019 01:25
  • Reply by Daryl_Forrest
  • Manitoba, Canada
having a truck serial number would help make this accessment more accurate but based on a general code chart for this model code 49=
wire breakage in pump motor, faulty CS3 current sensor, faulty logic card.

check all wiring to the pump motor circuits and check the current sensor first, faulty logic card is last resort if nothing else is found and is usually rare.
  • Posted 26 Sep 2019 23:53
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com

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The Japanese eat over 17 million tonnes of fish per year and are the largest importer of seafood. In Japan seafood is a staple food and included in most meals.
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The Japanese eat over 17 million tonnes of fish per year and are the largest importer of seafood. In Japan seafood is a staple food and included in most meals.
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