Chapter 14 Troubleshooting Guide - Hyundai Seasall S250S Installation & Operation Manual

■ Starter motor does not crank the engine
•Engine stop switch "ON" position
•Safety Stop Switch activated
•Weak battery or battery connections are loose
or corroded
•Ignition key switch failure
•Wiring or electrical connection fault
■ Engine cranks but does not start
•Weak battery or bad starter motor
•No fuel
•ECU not functioning
•Incorrect starting procedure
•Faulty fuel filter or electric fuel pump
•Faulty fuse
■ Engine starts with difficulty or starts and stalls
•Low fuel pressure in fuel rail
•Leakage in high pressure fuel circuit
•Faulty fuse
•No rail pressure sensor signal
•Oil level too high or too low
•ECU program error or hardware fault
■ Engine idle is rough
•Fuel return line not connected at injector
•No rail pressure sensor signal
•Wiring harness open or poor connection
•Bad fuel quality or water in fuel
•Clogged fuel filter / air filter
INSTALLATION & OPERATION MANUAL
S250 and S220 Series Engines
CHAPTER 14
TROUBLESHOOTING GUIDE
Possible Causes
Possible Causes
Possible Causes
Possible Causes
•Engine is not shifted to neutral position
•Wrong neutral switch connection to EOI
•Starter motor solenoid or slave solenoid failure
•Blown fuse at EOI
•Defective ECU
•Low fuel pressure
•Low compression pressure
•Crank position sensor not functioning
•Fuel is not reaching the engine
•Bad fuel quality or water in fuel
•Faulty injector
•Fuel return line not connected at injector
•Faulty alternator or voltage regulator
•No engine coolant temperature sensor signal
•Low battery voltage
•Low compression pressure
•Clogged fuel filter
•Low compression pressure
•Injector clamp poorly tightened
•Faulty high pressure fuel pump
•Faulty injector
•Carbon deposit on the injector
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