TROUBLESHOOTING OF ENGINE THROTTLE
CONTROLLER SYSTEM
(E MODE)
Points to remember when carring out troubleshooting of engine throttle controller system
Engine throttle controller system circuit diagram
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Action taken by controller when abnormality occurs and problems on machine
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Judgement table for engine throttle controller and engine related parts
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Troubleshooting flow charts for each failure mode
E- 1
Abnormality in engine throttle controller power source system
(engine speed stays at low idling)
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E- 2
[E3:08] Abnormality in fuel control dial input value is displayed ..............
E- 3
[E3:17] Abnormality (disconnection) in governor motor drive system is displayed
E- 4
[E3:18] Abnormality (short circuit) in governor motor drive system is displayed . .
E- 5
[E3:01] Abnormality in network reception system is displayed ...............
E- 6
[E3:05] Abnormality in model code is displayed ...........................
E- 7
[E3:06] Abnormality in governor potentiometer system is displayed ...........
E- 8
[E3:07] Abnormality in pump controller throttle system is displayed ...........
E- 9
[E3:15] Abnormality (short circuit) in battery relay output system is displayed ...
E-10 [E3:16] Abnormality (step-out) in governor motor system is displayed
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E-l 1
Enginedoesnotstart ................................................
E-12 Engine speed is irregular
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a) Idling speed is irregular ............................................
b)Thereishunting ..................................................
E-l 3
Lack of output (engine high idling speed is too low) .......................
E-l 4
Enginedoesnotstop ................................................
E-l 5
Defective operation of battery relay system (engine does not stop) ...........
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