Hino Motors HINO 155 series Workshop Manual page 455

2. DTC set condition
(1) DTC detection condition
1. All the following conditions continue for at least 30 seconds:
• Engine speed is between 250 – 900 r/min.
• Fuel injection quantity is within 0 – 50 mm
• Exhaust brake and PTO are not in operation.
2. All the following conditions continue for at least 10 seconds:
• Engine speed is in the range of 725-775 r/min.
• Gear position is D range.
• Fuel injection quantity < 45 mm
• Engine coolant temperature ≥ 71 C {159.8 F}.
• Throttle opening is 0%.
• Vehicle speed is 0 mile / h.
• Atmospheric pressure is 75 kPa or more.
• Exhaust brake and PTO are not in operation.
(2) Judgement criteria
• Failure is determined when two or more of P0301, P0302, P0303, and P0304 are detected for 3 seconds.
3. Reset condition
• After restoration to normal condition
4. Indication, warning or system control regulation when the DTC is set.
• MIL: ON
• SVS light: OFF
5. Symptoms on the vehicle when the DTC is set
<Symptoms on the vehicle due to backup control (fail safe function)>
• –
<Symptoms on the vehicle due to malfunction>
• Excessive vibration while engine is idling.
6. Pre-inspection work
• Check that the battery voltage is in the normal range.
7. After-inspection work
• Clear all past DTCs.
• Check that no DTC is stored after test drive.
8. Estimated failure factors
• Fuel injection line: break, crack, fuel leak
• Cylinder: compression leak
• Injector: clogging, constantly injecting
ENGINE (J05E)/TROUBLESHOOTING
3
/st. cyl.
3
/st. cyl.
2–419