Crown RC5535-35:
Electrical

How do you test the (TCM) Access 3. I'm getting readings of 76K ohms between Can H and Can L in the (TCM)Access 3. Thanks
  • Posted 11 Aug 2021 08:59
  • Discussion started by Jorge_Ramirez
  • California, United States
Jorge Ramirez
Showing items 1 - 10 of 10 results.
Oh ok, thanks for the help
  • Posted 13 Aug 2021 15:07
  • Reply by Jorge_Ramirez
  • California, United States
Jorge Ramirez
Then your access 3 is bad. You can't bench test it. You will need to call a Crown dealer, have them replace it and you will need to have software update to the truck as well as recalibration. Or you can order one, replace it yourself and then have them come out and do the software load and recalibration. No way around it.
  • Posted 12 Aug 2021 23:47
  • Reply by 1CrownTech
  • Washington, United States
1crowntechnician@gmail.com
Line Contactor does not close at all even at startup or when you depress both pedals. Only Pump Contactor closes when you depress one of the both pedals.
  • Posted 12 Aug 2021 13:17
  • Reply by Jorge_Ramirez
  • California, United States
Jorge Ramirez
Does the Line contractor close when you first start it and then open again? If so, that is why it won't code. If you start up and watch the line contractor and it does not close, it should give an error.

For many access 3 issues the only thing you can do is swap it out.
  • Posted 12 Aug 2021 12:29
  • Reply by 1CrownTech
  • Washington, United States
1crowntechnician@gmail.com
I dont have another same unit or Access 3 to test. I seen other post saying No Travel /No Codes and the same thing, Line Contactor not closing with good floorboard switches and they say it my be the (TCM) Access 3. How can I Test the Access 3?
  • Posted 12 Aug 2021 12:08
  • Reply by Jorge_Ramirez
  • California, United States
Jorge Ramirez
That is very odd. It should give an error. I highly suspect a failure within access 3. Do you have another RC5500 with same software? If so, put a known good one in and try. I've had some pretty odd things happen with Access 3 modules but your situation doesn't make sense.
  • Posted 12 Aug 2021 11:38
  • Reply by 1CrownTech
  • Washington, United States
1crowntechnician@gmail.com
No voltage to the line contactor (Coil) after depressing both LH and RH pedals. Floorboard switches ok.
  • Posted 12 Aug 2021 07:42
  • Reply by Jorge_Ramirez
  • California, United States
Jorge Ramirez
It is very odd that your Line contractor is not closing yet not throwing any codes. Do you have access to a known good access3 with same software? If so, try temp installing. If not, Check and see if you have voltage to L cont coil while turned on and on pedals. If not, you should be getting an error for L cont driver or coil shorted.
  • Posted 12 Aug 2021 04:19
  • Reply by 1CrownTech
  • Washington, United States
1crowntechnician@gmail.com
Symptoms: No Travel/ No codes Line Contactor not closing. Hydraulic working OkYeah
  • Posted 12 Aug 2021 01:30
  • Reply by Jorge_Ramirez
  • California, United States
Jorge Ramirez
What was the issue the unit was having?
  • Posted 12 Aug 2021 00:51
  • Reply by Triggs
  • California, United States

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