Troubleshooting chart
15
x =
Probable
o =
Possible
1.
EDC self-diagnosis or flash code output
2.
Starter turns over engine only slowly or not at all
3.
Starter turns, engine does not start, engine does not start / difficult to start when cold
4.
Engine stalls (dies) during operation, no longer starts (starter turns), engine does not start / starts with difficulty when hot
5.
Sudden, temporary engine shut-down, engine does not reach full revs
6.
Engine only runs at idle speed, no throttle response
7.
Engine only runs at increased idle speed, no throttle response
8.
Rated engine speed distinctly reduced (even under no load)
9.
Reduced output in all ranges
10. Irregular engine operation, traction loss
11. Unstable idle speed, engine hunting, misfiring, knocking in engine
12. Engine judder
13. Unusual combustion noise
14. Excessive smoke emission: White smoke / blue smoke
15. Excessive smoke emission: Black smoke
16. Engine temperature too high (coolant loss)
17. Intermediate engine speed control cannot be activated / does not switch off,
engine revs too high
18. Fuel consumption too high
19. Lubricating oil pressure too low
20. Lubricating oil pressure too high
21. Lubricating oil consumption too high
22. Engine too loud / mechanical noise
Possible causes
x x x
x x x
x
x
Fuel low pressure system: Fuel lines leaking, broken, clogged
x x x
x x
x
x
Fuel low pressure system: AIR in the system
(turn on ignition when bleeding the system)
x x x
x x x x
x
x
Fuel low pressure system: delivery pump, overflow valve, main filter
x
x
x x x o x
x
Fuel high pressure system: nozzles faulty / clogged / leaking / coked
x
x x x
o
Fuel high pressure system: pressure lines - constriction, cavitation, leaking
x
x
o x x x x
o
Fuel high pressure system: injection pump worn / incorrectly set
o
x o
o
Fuel high pressure system: injection pump constant-pressure control valve / re-
turn flow constrictor faulty
x x x
o x
EHAB defective, drive faulty
o o
o
x
o x x
x
Injection pump / engine synchronisation: start of delivery incorrect (basic installa-
tion), start of delivery set incorrectly
x
x x x
o
x o
Injection pump controller: stiff movement - fuel volume regulator (control devi-
ation)
x
x x x
o
Control rod position sensor in regulator: connection lines, break, short-circuit
o
o
o
Control rod position sensor in regulator: set incorrectly
x
x
o
Control rod position sensor in regulator: capacitance reserve of the wiring har-
ness too low (e.g. water penetrated wiring harness)
x
o x o
o
Injection pump: fuel volume set incorrectly / uniform delivery, lower idle speed set
too low
x
o x x
x
Delivery actuating solenoid in controller: Connection lines, break, short-circuit, or
CAN-Bus
x
x
x x x o
Drive stage selection defective:Connection lines, short-circuit, break
x
EDC rpm sensor defective, implausible with auxiliary rpm sensor, line defective
x o
EDC rpm sensor, polarity reversed
x
EDC auxiliary rpm sensor defective, implausible with rpm sensor, line defective
x
x x x o
o o
o
EDC detects incorrect engine speed (interference signal on rpm sensor line)
x
x x x
o
Both rpm sensors faulty, line fault
x
x
x
EDC boost pressure sensor: faulty, incorrect, implausible with atmospheric pres-
sure sensor, line fault
x
x
o x
Exhaust turbocharger leaking or faulty
x Turbine and compressor rotor in turbocharger dirty (out-of-balance, irregular run-
ning)
x
Intercooler leaking, faulty
x
x
Flame starting system defective
x
o
x x
o
x
EDC coolant temperature sensor: faulty, line fault
x
x x
EDC charge-air temperature sensor: faulty, line fault
o
x
x
Radiator dirty or cooling system failure (temperatures too high)
Summary of Contents for D 2866 LUE 605
Page 1: ......
Page 2: ......
Page 14: ...Notes 12...
Page 19: ...Memoranda 17...
Page 20: ...Engine views 18 Engine views 3 4 2 1 7 6 5 8 11 10 9...
Page 68: ...Memoranda 66...
Page 133: ...131 Service Data...
Page 157: ...155 Special tools...
Page 158: ...Special tools 156 2 3 4 5 6 7 8 1 6 1 6 2 6 3 9 1 9 2 9 3 9...
Page 162: ...Special tools 160 21 22 25 25 2 24 25 1 26 27 1 27 2 27 20 1 19 2 19 1 20 2 19 20 23 28...
Page 164: ...Special tools 162 30 31 32 1 32 32 2...
Page 167: ...Special tools 165 Pressing mandel for cap dia 62 1 mm Pressing mandel for cap dia 50 1 mm...
Page 170: ...Notes 168...
Page 173: ......
Page 174: ......
