1-151-15THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)
PPrroobblleem m CCaauusse e CCoorrrreeccttiioonn
14.14. EnginEngine e difdifficficult toult to
start or will notstart or will not
start (no smokestart (no smoke
from exhaust)from exhaust)
1. 1. ElectroniElectronic fc fault cault codes arodes are acte active.ive.
2. 2. Low Low fuel fuel tank tank levlevel.el.
3. 3. ExhaExhaust sust systystem is lem is leakieaking hot airng hot air
into engine compartment.into engine compartment.
4. 4. Fuel Fuel shutshutoff off valvvalve close closed.ed.
5. 5. BatteBattery vory voltaltage supplge supply to the ely to the elec-ec-
tronic control system is tronic control system is lowlow, , inter-inter-
rupted, or open.rupted, or open.
6. 6. Fuel Fuel filfilterter(s) (s) are plare plugged.ugged.
7. 7. Fuel cFuel conneconnection ition is looss loose on sucte on suctionion
side of fuel pump.side of fuel pump.
8. 8. Starting Starting motor motor rotation rotation is iis incorrectncorrect..
9. 9. EnginEngine crane crankinking speed tog speed too slowo slow..
10.10. Loose wire on masLoose wire on master disconter disconnectnect
switch.switch.
1. 1. ReRefer fer to to thetheQSM11 Fault CodeQSM11 Fault Code
InformationInformationchart in this section.chart in this section.
2. 2. AdAdd d fufuelel..
3. 3. ChecCheck the ek the exhausxhaust plut plumbimbing forng for
leaks or broken components.leaks or broken components.
4. 4. RepaRepair fir fuel suel shutdowhutdown soln solenoidenoid..
5. 5. ChecCheck the batk the battery ctery conneconnectiontions.s.
Check the fuses and the un-Check the fuses and the un-
switcswitched hed battery supply battery supply circuicircuit.t.
6. 6. ReplReplace face fuel fuel filtilter(er(s).s).
7. 7. TTightighten all fueen all fuel fittl fittings anings and connecd connec--
tions from fuel tank to fuel pump.tions from fuel tank to fuel pump.
8. 8. Check Check directidirection of on of crankscrankshaft rhaft rota-ota-
tion. tion. Replace sReplace starting mtarting motor if necotor if nec--
essary.essary.
9. 9. ChecCheck k enginengine ce crankranking ing rpmrpm. . RefeReferr
to Problem 26. of this troubleshoot-to Problem 26. of this troubleshoot-
ing chart.ing chart.
10.10. IsoIsolate and tighten wirlate and tighten wire.e.
11. Contact a Cummins Authorized11. Contact a Cummins Authorized
Repair Facility.Repair Facility.
15.15. EnginEngine e difdifficficult toult to
start or will notstart or will not
start (exhauststart (exhaust
smoke present)smoke present)
continuedcontinued
1. 1. ElectroniElectronic fc fault cault codes arodes are acte active.ive.
2. 2. BatteBatterieries havs have drae drained oined or arr aree
defective.defective.
3. 3. Fuel sFuel shutofhutoff valvf valve(s) ie(s) is closs closeded
(electronically controlled injection).(electronically controlled injection).
4. 4. Fuse(sFuse(s) ) malfunctmalfunctioning.ioning.
5. 5. Fuel Fuel filfilterter(s) (s) are plare plugged.ugged.
6. 6. IntaIntake air oke air or exhar exhaust sust systeystem ism is
restricted.restricted.
7. 7. Fuel Fuel grade igrade is not cs not corrorrect oect or fuelr fuel
quality is poor.quality is poor.
8. 8. EnginEngine crane crankinking speed tog speed too slowo slow..
9. 9. HydHydraulraulic pumic pump is dep is dead-head-headed.aded.
1. 1. ReRefer fer to to thetheQSM11 Fault CodeQSM11 Fault Code
InformationInformationchart in this section.chart in this section.
2. 2. RecRechargharge or ree or replacplace battee batterieries.s.
3. 3. ChecCheck the fk the fuel suel shutofhutoff valf valve andve and
circuit.circuit.
4. 4. ReplReplace tace the fushe fuse(se(s) in t) in the OEMhe OEM
interfacinterface e harness.harness.
5. 5. ReplReplace face fuel fuel filtilter(er(s).s).
6. 6. ChecCheck intk intake aiake air and exhr and exhaust saust sys-ys-
tems for rtems for restricestrictions. tions. RemoveRemove
restrictions.restrictions.
7. 7. OperOperate tate the engihe engine frne from a tom a tank ofank of
high-quality fuel (refer to thehigh-quality fuel (refer to theFuelFuel
and Lubricant Specificationsand Lubricant Specificationsinin
thetheAppendicesAppendices).).
8. 8. ChecCheck k enginengine ce crankranking ing rpmrpm. . RefeReferr
to Problem 26. of this troubleshoot-to Problem 26. of this troubleshoot-
ing chart.ing chart.
9. 9. De-energiDe-energize ze hydraulihydraulic c circuicircuit.t.
To Next Page
Loading...