Diagnostic Trouble Code (DTC) Mode

CPA0002819-UN-31MAY16

Active Diagnostic Trouble Code

CPA0002820-UN-31MAY16

Previously Active Diagnostic Trouble Code

CPA0002821-UN-31MAY16

Undocumented Diagnostic Trouble Code

NOTE: See On-Board Diagnostic Tool page for directions to enter DTC mode.

IMPORTANT: When a DTC occurs; make note of operating conditions and STOP, or Warning, or Information alert indicators. Contact your John Deere dealer for service assistance.

DISPLAY	DESCRIPTION
A - Control Unit	CCU, ECU, EIC, ICC, and PTR
B - DTC Status	Wrench Icon on: Active Wrench Icon off: Previously Active.
C - DTC	Diagnostic Trouble Code number XXXXXX.XX

Diagnostic Trouble Code (DTC) Mode displays active, previously active (stored), and undocumented fault or trouble codes (know as DTC).

If a control unit software detects a malfunction or a status fault, a DTC is registered. A DTC number consist of the control unit software abbreviation, suspect parameter number (SPN), and a failure mode indicator number (FMI). A DTC identifies which machine system is experiencing a certain type of problem.

For example:

Software	SPN	FMI
ICC	002370	.05
ICC	"none"	means no codes

NOTE: Undocumented DTC are randomly generated. Contact your John Deere dealer for service assistance.