Hino Motors HINO 155 series Workshop Manual page 779

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
• Sensor disconnected from measuring site
• Harness disconnection or short-circuit
• Abnormal resistance of sensor (stuck)
• Malfunction of ECU
ENGINE (J05E)/TROUBLESHOOTING 2–743