Crown 55FCTT-188:
Code 49 resolution

I am working on an old crown 55FCTT-188 serial# 1A140943. The lift came back for havening no reverse. When I test drove the truck it was working fine. Then it went into a code 49 which deals with the #5 rec mainly. I have been all over this thing. I even replaced #'s 1,2,3,4,5 recs, capacitor, choke, spider block, even tried a different card from another truck. When I put the #4 rec heat sink assembly back into the truck, and tested it the first time it came up with code 49 again. I cycled the key switch and it moved in both directions. I moved it in both directions approximently 10 times and when I went to back it into the spot I was working on it, it PMT and hit code 49 again. I am now completely lost. Was wondering if anyone had any ideas. Thanks.
  • Posted 28 May 2013 18:45
  • Discussion started by BigT
  • Ohio, United States
Showing items 1 - 6 of 6 results.
from his description this is an ev100 panel
from what i remember there is no #7 rec unless crown has thrown in some odd modification? (doubt it) but ya never know ;o)
  • Posted 31 May 2013 00:17
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
I have had the same issue. It would only log a fault when I would change direction. It turned out to be a 7 rec
  • Posted 30 May 2013 22:26
  • Reply by ctech
  • United States
Thanks everyone for your replys. I will double check everything you all suggested. Very much appreciated.
  • Posted 30 May 2013 16:23
  • Reply by BigT
  • Ohio, United States
First and foremost i hope you have checked the battery voltage and made sure you are working with a full charged battery, low voltage can cause these systems to go nuts at times.

But...............

if you have already done so and are following the troubleshooting manual for this EV system it also mentions checking the #22 and #25 snubbers for for shorted condition (which has already been suggested).
And while you're throwing parts at it ya might as well replace those as well.
Double check the connections on the choke wire running through the spiderblock, i've seen that connection behind the snubbers where the one screw is be faulty before because of faulty threading for the screw not letting it completly seat creating a loose connection. You can also check the connections in the plugs and even use a small pair of needle nose pliers and put a slight twist on the pins in the card to create a more positive connection. Sometimes these terminals in the plugs will open up and cause a bad connection and cause all sorts of codes that will run you around in circles.
  • Posted 29 May 2013 20:47
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
ONE thing I would do is clean ALL the connections at the components...all those little buss bars that connect the 2 and 5 recs to the spider block and to the reactor clean ALL the corrosion off them and any wire terminals also...also the connections at the capacitor
  • Posted 29 May 2013 20:04
  • Reply by kevin_t
  • Pennsylvania, United States
when you changed the spider block did you fit new snubbers as well?
is PC-Z making good contact
  • Posted 29 May 2013 18:41
  • Reply by crownie
  • Victoria, Australia

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