Hino Motors HINO 155 series Workshop Manual page 512

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Check the DTC detected (Engine ECU)
Has DTC P0401 been detected?
Replace the engine ECU.
Perform "After-inspection work" of INFOR-
MATION section.
ENGINE (J05E)/TROUBLESHOOTING
Perform engine warm up. (engine coolant temperature: 80 C {176
1.
F} or more)
2. Stop the engine.
3. Set the starter key to the "ON" position.
4. Select [Engine] and check if P0401 has been detected.
SHTS021270300438
YES NO
Procedure completed.
Perform "After-inspection work" of INFOR-
MATION section.