John Deere POWERTECH 4045 - Manual (Page 217)

Troubleshooting
DPSG,OUOD002,1591 –19–27JUL06–1/1
Displaying Of Diagnostic Trouble Codes (DTCs)
There are several different methods for displaying both
stored and active DTCs from the ECU via a fault lamp
or a diagnostic gauge on the electronic instrument
panel.
2-DIGIT CODES
Some engines display Service Codes or DTCs as
2-digit codes read from a fault lamp which gives blink
codes.
SPN/FMI CODES
Stored and active diagnostic trouble codes are output
on the diagnostic gauge on the Deere electronic
instrument panel according to the J1939 standard as a
two-part code as shown on the tables on the following
pages.
The first part is a six-digit Suspect Parameter Number
(SPN) followed by a two-digit Failure Mode Identifier
(FMI) code. In order to determine the exact failure,
both parts (SPN and FMI) of the code are needed.
The SPN identifies the system or the component that
has the failure; for example SPN 000110 indicates a
failure in the engine coolant temperature circuit.
The FMI identifies the type of failure that has occurred;
for example FMI 03 indicates value above normal.
Combining SPN 000110 with FMI 03 yields engine
coolant temperature input voltage too high, or the
equivalent of 2-digit fault code 18.
If diagnosing an application that shows DTCs as SPNs
and FMIs, using the following list, determine the
equivalent 2-digit code and have your dealer use the
diagnostic procedure in the component technical
manual for that 2-digit code.
Always contact your servicing dealer for help in
correcting diagnostic trouble codes which are
displayed for your engine.
45-21
080706
PN=215