Diagnostic LED’s

PC22411-UN-04APR16

A - A LED

B - B LED

C - C LED

D - Power LED

LED	Color	Blinks Per Second	Description
A	None	Solid state	Microprocessor is not powered
	Yellow	1	Boot hold mode
	Red	5	Microprocessor is programming
	Red	1	ISOBUS is offline
	White	1	Virtual terminal (VT) is offline
	Green	1	VT and system are normal
B	Red	Solid state	Field programmable gate array is not running
	Red	1	Low voltage power lost
	Blue	1	Signal is present on 1 or more rate sensors
	Yellow	1	Diagnostic Trouble Codes (DTCs) are active
	White	1	System voltage is below 11.5 V
	Purple	1	System voltage is above 16 V
	Blue	Solid state	One or more product switches have been set to on
	Purple	Solid state	Signal is present on one or more rpm sensors
	Green	Solid state	All product switches have been set to off
C	Red	Solid state	Field programmable gate array is not running
	Green	1	Auxiliary CAN channel is active
	Red	1	Auxiliary CAN channel was active and is now offline
	Green	Solid state	No problems reported
Power	Green	Solid state	Electronic control unit (ECU) powered