Caterpillar E5000-AC:
Code 45 - No Traction

I am not familiar with many of the Cat forklifts. Basic testing has led me to having a card issue.
Does anyone have information on the code and testing procedures for it?

Thank you,
  • Posted 12 Jun 2014 00:51
  • Discussion started by ForkLiftACE
  • Ontario, Canada
Showing items 1 - 10 of 10 results.
I am working on a cat e6000. It has a code 45. I checked the resistance in the cables on the drive motor. All 3 have 1 ohms. I do not know what the ohms reading should be on the drive motor. All connections are good. I do know its either the drive motor or the controller. I am not familiar with the location and components on on this unit.
  • Posted 24 Oct 2019 21:04
  • Reply by Dennis_Metcalf
  • Texas, United States
Dennis Metcalf
Yes this is true :o)
  • Posted 20 Jul 2018 01:35
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
Very true Swoop.... But since he had changed the inverter 3 times and still has a issue. Kinda got to the point where the simply fix is being over looked (maybe)..LOL sure we have all been there a time or 2
  • Posted 19 Jul 2018 22:49
  • Reply by Adams1
  • Indiana, United States
yes Adams1
there is a HPK document 000111-09C from 9/11/2009 that covers the motor cables issue.
There is also another HPK document that covers this code and an alternate 47 code in document 000075-10C dated 1/10/2011 that deals with Inverter issues. It explains problems with voids in solder points and poor connections in the inverter and also improper torque or the UVW connections. More specifically Drive board and U phase code 45.

So along with my suggestions and yours too he should find some sort of issue that would cause this code.

Another thing to consider that is possibly related is during installation and torquing of the terminals is if they are over torqued they can actually break the connection to the standoff inside the inverter. This is in coorellation to part of what the later hpk document covers about the under torque issues.
The document does not actually mention the standoff breaking but i have seen this many times.

But if you havnt checked the motor side of this that would be a good idea to do as well.
  • Posted 19 Jul 2018 21:49
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
there is a service bullitin out on this code says to check the motor cables where they come out of motor frame from stator windingscheck lugs for cracks. the lugs they used was to small and have updated to a heavier lug on the cables. Just something to check
  • Posted 19 Jul 2018 20:47
  • Reply by Adams1
  • Indiana, United States
Rcarter,
if the plastic keeps melting around the post i would most definatly check the connections where the cables connect, if they are not clean that can cause heat from high amp draw.
Also get an amp meter and check the amp draw on the motor.
Check the battery settings and make sure they are set correctly, if it is drawing the battery down too low it can cause a high amp condition and make the controller posts heat up melting the controller cover around the posts.
Also make sure it is the correct battery for the lift according to the battery specs for the lift.
Get a battery company to check the battery out and make sure it is ok, if it is running down too quickly or making too much heat there may be an issue with it.
  • Posted 19 Jul 2018 12:32
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
Hello, can you send more information regarding this code to cpapadopulos1 at gmail dot com
Thanks in advance
  • Posted 19 Jul 2018 04:51
  • Modified 19 Jul 2018 06:04 by administrator
  • Reply by constantino_p
  • Coahuila, Mexico
What would cause this to keep happening ? I've checked all connections, replaced the traction inverter 3 times. It keeps melting the plastic case around the tv post
  • Posted 9 Jan 2017 16:18
  • Reply by Rcarter
  • North Carolina, United States
Display-45
All truck operations inhibited. Line contactor OPEN and steering contactor HOLD

Possible Cause
Faulty contact or wire breakage of traction motor cable, faulty traction motor, faulty contact or wire breakage of traction
inverter connector, faulty contact of DSP flat cable in traction inverter, wire breakage of main harness, faulty power
supply card of logic unit, faulty DSP card of traction inverter, faulty traction inverter, when restarting after motor shorted.


There is also a service gram out about this code having to do with bad connections at the motor connections on the inverter, faulty solder connections on the circuit board and some other issues.

If you have a different email address other than twitter i can send this to you for reference.
  • Posted 27 Jun 2014 20:23
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
Model and Serial Number ?

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