Doosan D35S-5 Service Manual page 157

Hard to start the engine. (cranking is possible)
Self diagnosis
Check injector
Check fuel supply to injector
• Fuel pressure
• Fuel in the tank
Fuel pressure check (comparison
between target and actual values)
Engine control system check
D439E Service Manual
Trouble code
No trouble code
OK
OK
OK
Trouble code
• Use Hi-scan
• Leakage
• Fuel line
• Fuel filter
NG
• Fuel pump
• Oil filler cap
• Oil level gauge
NG
• Vacuum hose connection
• Supply pump
• Fuel filter
• Fuel pressure regulator
NG
• Wiring connection
• Power to ECU
NG 1. Fusible link
2. Fuse
3. Control relay
• Engine coolant temperature
sensor
• Intake air temperature sensor
• Injection signal circuit
1. Injector wiring
2. ECU
155 4. Fuel system