Manual
023-00354-Rev1.6                         evc/epc User Manual                          8 
Copyright © High Country Tek, Inc.  2013 
evc/epc Controller  
With SAE J1939 Interface 
LED Diagnostic Codes ( common to both modules ) 
Module Status LED 
GREEN steady ------------------------------------------- 
Normal operation 
RED 1 pulse ---------------------------------------------- 
Output A short detected 
RED 2 pulses --------------------------------------------- 
Output B short detected 
GREEN 1 pulse ------------------------------------------ 
Output A open detected 
GREEN 2 pulses ----------------------------------------- 
Output B open detected 
RED 3 pulses --------------------------------------------- 
Input error detected, reference voltage error 
GREEN 3 pulses ----------------------------------------- 
Power supply error 
GREEN 4 pulses ----------------------------------------- 
Reverse retry fail error 
RED 4 pulses --------------------------------------------- 
Pot not centered at reset error 
ORANGE 1 pulse ---------------------------------------- 
State error 
Communication Status LED 
GREEN steady ------------------------------------------- 
Normal operation 
GREEN with ORANGE pulses ----------------------- 
Serial port (GUI) traffic 
ORANGE/ RED pulsing -------------------------------- 
Receiving SAE J1939 traffic 
RED 1 pulse ---------------------------------------------- 
SAE J1939 set point message timeout 
RED 2 pulses --------------------------------------------- 
SAE J1939 engine rpm message timeout 
RED 3 pulses --------------------------------------------- 
Pot not centered at reset error 
ORANGE 1 pulse ---------------------------------------- 
State error 










