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Error Code 448

Hi guys,
I'm currently troubleshooting a crown RD5700 model.
What is this error code (448) referring to.
Which part should I check/replace.
Sorry for the newbie level question. I'm just starting our.
Would appreciate any advice.

Thanks & Regards
  • Posted 30 Dec 2019 16:57
  • By Eshwar
  • joined 30 Dec'19 - 1 message
  • Johor, Malaysia
-GG-
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Showing items 1 - 1 of 1 results.
that code refers to the ACCESS 4 CASTER BRAKE (BRK2) COIL OPEN CIRCUIT.
one of the wires to the BRK2 outer coil has an open circuit. The current <0.5 A. Use ANALYZER MENU/ A3.4.20.3 to monitor the BRK2 resistance and A3.4.20.2 to monitor the current feedback.

(turn the truck OFF. disconnect ACCESS 4 CA411. Measure the resistance from ACCESS 4 CA414-34 ti CA411-35)

IF; the resistance is >8 ohms
then there is damage to the wire or connector. check the connector pins for corrosion. make the necessary repairs or replacements.

IF: there is an open circuit.
then make the necessary repairs or replacements

IF: the wires and connections are good/ok
then replace BRK2 coil

hope this helps.
  • Posted 2 Jan 2020 22:04
  • By Mechanic_1217
  • joined 31 May'19 - 9 messages
  • New York, United States
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