THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)
1-101-10
FFaauullt t CCoodde e - - LLiigghht t FFaaiilluurre e DDeessccrriippttiioon n FFaaiilluurre e RReessuullttss
44334 4 - - YYeellllow ow SSuuppplply y vovollttagage e tto o tthhe e EECM CM ffeelll l bbeelloow w 66..2 2 VDVDCC
for a fraction of a second OR the ECM was notfor a fraction of a second OR the ECM was not
allowed to power down correctly (retain batteryallowed to power down correctly (retain battery
voltage for 30 seconds after key off).voltage for 30 seconds after key off).
Possible no noticeable performance effectsPossible no noticeable performance effects
OR possibiliOR possibility of ty of engine dying OR hard engine dying OR hard star-star-
ing. ing. Fault information, Fault information, trip informatitrip information, andon, and
maintenance monitor data may be inaccurate.maintenance monitor data may be inaccurate.
44335 5 - - YYeellllow ow AAn n eerrrroor r iin n tthe he ooiil l prpreesssusurre e ssenenssoor r sisiggnnaal l wawass
detectdetected by ed by the ECM.the ECM.
None on performNone on performance. ance. No engine proteNo engine protectionction
for oil pressure.for oil pressure.
441 - Yellow441 - Yellow Battery Battery voltage voltage is is below below the the normal normal operatingoperating
level.level.
Possible no noticeable performance effectsPossible no noticeable performance effects
OR possibility of rough idle.OR possibility of rough idle.
442 - Yellow442 - Yellow Battery Battery voltage voltage is is above above the the normal normal operatingoperating
level.level.
None on performance.None on performance.
44443 3 - - YYeelllloow w LLoow w vvoollttaagge e ddeetteecctteed d oon n tthhe e EECCM M vvoollttaaggee
supply line to the throttle(s) (VTP supply).supply line to the throttle(s) (VTP supply).
The engine will only idle.The engine will only idle.
44889 9 - - YYeellllow ow AAuuxixilliiaarry y spspeeeed d ffrreeqquueenncy cy oon n iinnpuput t ppiin n iinndidi--
cated that the frequency is below a calibrationcated that the frequency is below a calibration
dependent threshold.dependent threshold.
The engine will only idle.The engine will only idle.
55227 7 - - YYeellllow ow LLeess ss tthhaan n 1177..0 0 VVDC DC ddeteteectcteed d at at tthhe e dduuaal l oouutt--
put A signal pin of the 31-pin OEM connector.put A signal pin of the 31-pin OEM connector.
No action taken by the ECM.No action taken by the ECM.
55228 8 - - YYeellllow ow LLeess ss tthhaan n 1177..0 0 VVDC DC ddeteteectcteed d at at tthhe e dduuaal l oouutt--
put B signal pin of the 31-pin OEM connector.put B signal pin of the 31-pin OEM connector.
No action taken by the ECM.No action taken by the ECM.
55229 9 - - YYeellllow ow LLeess ss tthhaan n 1177..0 0 VVDC DC ddeteteectcteed d at at tthhe e dduuaal l oouutt--
put B signal pin at the ECM.put B signal pin at the ECM.
No action taken by the ECM.No action taken by the ECM.
551 - Yellow551 - Yellow No No voltage voltage detected detected simultaneously simultaneously on on bothboth
the idle validation off-idle and on-idle circuits.the idle validation off-idle and on-idle circuits.
The engine will only idle.The engine will only idle.
58581 1 - - YYelelllow ow HiHigh gh vovolltatage ge dedetetectcted ed at at ththe e fufuel el iinlnlet et rresesttriric-c-
tion sensor signal pin.tion sensor signal pin.
Fuel inlet restriction monitor deactivated.Fuel inlet restriction monitor deactivated.
55882 2 - - YYeellllow ow LLoow w vvoollttaagge e ddeteteectcteed d aat t tthhe e ffueuel l iinnlleet t rreessttrriic-c-
tion sensor signal pin.tion sensor signal pin.
Fuel inlet restriction monitor deactivated.Fuel inlet restriction monitor deactivated.
55883 3 - - YYeellllow ow ReReststrriiccttiioon n hhaas s bbeeeen n ddeetteecctteed d aat t tthhe e ffuueel l ppuummpp
inlet.inlet.
Fuel inlet restriction monitor warning is set.Fuel inlet restriction monitor warning is set.
55996 6 - - YYeellllow ow HiHiggh h bbaatttteerry y vovollttaagge e ddeetteecctteed d bby y tthhe e bbaatttteerryy
voltage monitor feature.voltage monitor feature.
YYellow light ellow light will be will be illuminated until high illuminated until high batterybattery
voltage condition is corrected.voltage condition is corrected.
55997 7 - - YYeelllloow w IICCOONNtthas restarted the engine 3 times withinhas restarted the engine 3 times within
3 hours due to low battery voltage (automotive3 hours due to low battery voltage (automotive
only) OR low battery voltage detected by theonly) OR low battery voltage detected by the
battery voltage monitor feature.battery voltage monitor feature.
YYellow light ellow light will be will be illuminated until low illuminated until low batterybattery
voltavoltage conditige condition is correctedon is corrected. . The ECM mayThe ECM may
increase idle speed and deactivate idle decre-increase idle speed and deactivate idle decre-
ment switment switch if idle speedch if idle speedup is enabled. up is enabled. TheThe
engine will run continuously if ICONengine will run continuously if ICON
tt
is activeis active
(automotive only).(automotive only).
598 - Red598 - Red Very Very low low battery battery voltage voltage detected detected by by the the bat-bat-
tery voltage monitor feature.tery voltage monitor feature.
Red light will be illuminated until very low bat-Red light will be illuminated until very low bat-
tery voltage condition is corrected.tery voltage condition is corrected.
611 - None611 - None Engine Engine shutdown shutdown by by operator operator before before properproper
engine cool down resulting in filtered load fac-engine cool down resulting in filtered load fac-
tor above maximum shutdown threshold.tor above maximum shutdown threshold.
No action taken by the ECM.No action taken by the ECM.
99551 1 - - NNoonne e A A ppoowweer r iimmbbaallaanncce e bbeettwweeeen n ccyylliinnddeerrs s wwaass
detectdetected by ed by the ECM.the ECM.
The engine may have rough idle or misfire.The engine may have rough idle or misfire.
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