Perform The Cylinder Cut-Off Test (Hino Dx Ⅱ ) - Hino Motors HINO 155 series Workshop Manual

2–404
Perform the cylinder cut-off test (HINO DX Ⅱ )
6
Did you find the engine sound different?
<There is a clear difference in sound or per-
formance when the injection is cut-off>
Go to step 8.
7
Check the DTC detected (Engine ECU)
Has DTC (P026C or P026D) been detected?
Go to step 8.
ENGINE (J05E)/TROUBLESHOOTING
1. Use the cruise function to run the engine at 1,500 r/min.
2. Check the engine sound during normal operation. (before Cut-off
test)
Use HINO DX Ⅱ [Data monitor and Active test] to perform a cut-off
3.
test.(For details, refer to the cut-off test procedure on the following
pages.)
<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
SHTS021270300366
engine and verifying the engine sound or performance.
YES
Perform the engine warm up. (engine coolant temperature: 80 C
1.
{176 F} or more)
2. Stop the engine.
3. Set the starter key to the "ON" position.
4. Select [Engine] and check if the DTC (P026C or P026D) has been
detected.
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YES
NO
<There is no difference in sound or perfor-
mance when the injection is cut-off>
Replace the injector.
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 7 after replacement.
NO
Procedure completed.
Perform "After-inspection work" of INFOR-
MATION section.