Perform The Cylinder Cut-Off Test - Hino Motors HINO 155 series Workshop Manual

2
Check the DTC detected (Engine ECU)
Has DTC P0300 been detected?
Go to step 3.
3

Perform the cylinder cut-off test

Did you notice a difference in engine sound?
<There is a clear difference in sound or per-
formance when the injection is cut-off>
Go to step 4.
ENGINE (J05E)/TROUBLESHOOTING
Warm up the engine. (engine coolant temperature: 80 C {176 F}
1.
or more)
2. Stop the engine and set the starter key to the "ON" position.
3. Select [Engine] and check if P0300 has been detected.
SHTS021270300383
YES
1. Use the cruise function to run the engine at 1,500 r/min.
2. Check the engine sound during normal operation.
3. Select [Engine], and [Data monitor and Active test] to perform a
cut-off test.
For details, refer to "Flow-Cut off test" procedure.
<Cylinder cut-off test>
- This method is generally used to check combustion abnormalities by
stopping the fuel injection for one of the cylinder of a four-cylinder
engine and verifying the injectors' sound.
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YES
NO
Procedure completed.
Perform "After-inspection work" of INFOR-
MATION section.
NO
<There is no difference in sound or perfor-
mance when the injection is cut-off>
Replace the injector (Replace the failed injec-
tor detected by the cut-off test, not the injec-
tor noted in the DTC.)
Go to step 5 after replacement.
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