1-51-5THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)
ing the ignition switch back on to confirming the ignition switch back on to confirm
that the blue light has been reset.that the blue light has been reset.
2.2. Yellow Yellow LightLight(System Fault)(System Fault).. This light illumi-This light illumi-
nates during a non-fatnates during a non-fatal system eal system errorrror. . TheThe
engine can still be run, but the fault should beengine can still be run, but the fault should be
corrected as soon as possible.corrected as soon as possible.
NOTE:NOTE: In the diagnostic mode, the yellow lightIn the diagnostic mode, the yellow light
will flash after the red light completes the three-will flash after the red light completes the three-
digit fault code.digit fault code.
3.3. Red Red LightLight(Engine Shutting Down)(Engine Shutting Down).. This lightThis light
illuminates when the engine needs to be shutilluminates when the engine needs to be shut
off before permanent damage occurs to theoff before permanent damage occurs to the
engine. engine. Should the red lShould the red light illight illuminate wuminate whilehile
operating, the fault can be engine disablingoperating, the fault can be engine disabling
after approxafter approximately imately 32 seconds. 32 seconds. Should theShould the
engine shut down due to the severity of theengine shut down due to the severity of the
fault, it can be restarted and will run forfault, it can be restarted and will run for
approximapproximately 32 secately 32 seconds. onds. The engine wiThe engine willll
run for approximately 32 seconds each time itrun for approximately 32 seconds each time it
is restaris restarted. ted. There are no limThere are no limits on the num-its on the num-
ber of times the engine may be restarted.ber of times the engine may be restarted.
NOTES:NOTES:
SS
The engThe engine shoine should be shuld be shut off as sut off as soon as itoon as it
can be shut off can be shut off safelysafely. . The engine shoulThe engine shouldd
notnot
be be run run until until the the fault fault is is corrected.corrected.
SS
This lThis light is ight is also used also used to flash to flash out the faulout the faultt
code number in the diagnostic mode.code number in the diagnostic mode.
BLUEBLUE
LIGHTLIGHT
YELLOWYELLOW
LIGHTLIGHT
REDRED
LIGHTLIGHT
IllustrIllustration 1-5. ation 1-5. DiagnostiDiagnostic Lightsc Lights
Diagnostic Fault CodesDiagnostic Fault Codes(Illustration 1-5)(Illustration 1-5).. If theIf the
red lightred light(Engine Shutting Down) or(Engine Shutting Down) oryellow lightyellow light
(System Fault) light comes on when the engine is(System Fault) light comes on when the engine is
running, it means a fault code has been recorded.running, it means a fault code has been recorded.
The light will remain on as long as the fault exists.The light will remain on as long as the fault exists.
The severity of the fault will determine the lightThe severity of the fault will determine the light
that will cthat will come on. ome on. Only actiOnly active fault codes cve fault codes can bean be
viewed by use of the diagnostic liviewed by use of the diagnostic lights. ghts. TTo viewo view
inactive fault codes, a laptop computer equippedinactive fault codes, a laptop computer equipped
with Cummins Insite software is required.with Cummins Insite software is required.
To view active fault codes, perform the following:To view active fault codes, perform the following:
1. 1. TTurn urn off off the the engiengine.ne.
2. 2. TToggle the diagnosoggle the diagnostic swtic switch (litch (located insiocated insidede
the dash on the right side) to the ON position.the dash on the right side) to the ON position.
3. 3. TurTurn the ignitin the ignition key to its on key to its accessoraccessory positiy positionon
(firs(first click)t click). . If no active fault codes are recorIf no active fault codes are record-d-
ed, the yellow light (System Fault) and reded, the yellow light (System Fault) and red
light (Engine Shutting Down) will illuminatelight (Engine Shutting Down) will illuminate
and stay on. and stay on. If activIf active fault codes are rece fault codes are record-ord-
ed, the yellow light and red light will illuminateed, the yellow light and red light will illuminate
momentarily, and then the red light will beginmomentarily, and then the red light will begin
to flash the three-digit code of the recordedto flash the three-digit code of the recorded
fault(s).fault(s).
4. 4. The fauThe fault code wlt code will fill flaslash in the follh in the followiowingng
sequence:sequence:
a. a. FirsFirst, the yt, the yellow lellow light wiight will flll flash beginningash beginning
the sequthe sequence. ence. TherThere will be a short 1 or 2e will be a short 1 or 2
second pause after which the red light willsecond pause after which the red light will
flash the first, second, and third digits offlash the first, second, and third digits of
the recthe recordeorded fault coded fault code. . TherThere will be a 1e will be a 1
or 2 second pause between each numberor 2 second pause between each number
of the code. of the code. When all tWhen all three dighree digits of theits of the
fault code have flashed, the yellow light willfault code have flashed, the yellow light will
illuminate again and repeat the sequenceilluminate again and repeat the sequence
until the fault is cleared or the Diagnosticuntil the fault is cleared or the Diagnostic
switch is toggled to the OFF position.switch is toggled to the OFF position.
Example:Example:
Fault Code 432Fault Code 432
4 flashes, pause4 flashes, pause
3 flashes, pause3 flashes, pause
2 flashes2 flashes
b. b. If mulIf multiptiple faulle fault codes hat codes have been stve been storedored,,
the first fault code must be cleared beforethe first fault code must be cleared before
the second fault code can be displayed.the second fault code can be displayed.
Fault Code Information.Fault Code Information. All fault codes identifiedAll fault codes identified
in bold print on the preceding fault code informa-in bold print on the preceding fault code informa-
tion chart deal with engine and transmissiontion chart deal with engine and transmission
protection systems external to the Cumminsprotection systems external to the Cummins
QSM1QSM11 engine. 1 engine. Fault cFault code #151 can be causedode #151 can be caused
by both engine and external components.by both engine and external components.
Contact Taylor Machine Works Sudden ServiceContact Taylor Machine Works Sudden Service
Department for additional assistance if needed.Department for additional assistance if needed.
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