Hino Motors HINO 155 series Workshop Manual page 390

2–354
8. Estimated failure factors
(1) Check for the relevant symptom by referring to the Workshop Manual, Engine Introduction, and Troubleshooting
Overheating.
• Faulty coolant-related component
• Faulty cooling system
• Faulty injection system
• Faulty lubricating system
(2) Malfunction of cooling fan, malfunction of fan clutch
(3) Malfunction of coolant temperature sensor
ENGINE (J05E)/TROUBLESHOOTING