07-14-2022, 10:49 PM
Could you post a shot of your keypad. I finally found an Allison keypad that looks like what I am envisioning you are describing. See Page 9 of http://manuals.chudov.com/M939-Series-Tr...Manual.pdf
If this is the keypad you have, it does not appear to support direct reading of error codes through the keypad.
If this is the keypad you have, it does not appear to support direct reading of error codes through the keypad.