ENGINE (J05E)/TROUBLESHOOTING
2–487
1.
Select [Inspection Menu] from the menu, then inspect the
response delay at the Target VNT position and Actual VNT posi-
tion.
! CAUTION
Perform the inspection while the engine is stopped to avoid dam-
ages.
<Inspection procedure>
(1) Select [Inspection Menu].
(2) Select [VNT inspection].
(3) Select [Start inspection].
(4) Select [VNT UP]:
•
Inspect the response delay at each step of the Target VNT position
and Actual VNT position from 0 to 90%.
(5) Select [VNT DOWN]:
•
Inspect the response delay at each step of the Target VNT position
and Actual VNT position from 90 to 0%.
HINT
The VNT opening position changes of around 10% per step
between 0
–
90%.
NO
YES
1.
Check the air cleaner element for dirt, clogging, or damage.
2.
Make sure the element is a Hino genuine part.
NO
YES
2
Check the response delay of the VNT controller
(4)
(5)
(3)
(1)
(2)
SHTS021270300454
Standard values
From the Target VNT position to the Actual VNT position,
the response delay should be within 3 seconds.
Do the measurements meet the standard value?
Go to step 3.
Replace the turbocharger.
Perform "After-inspection work" of INFOR-
MATION section.
3
Inspect the air cleaner element
Was any failure found?
Clean or replace the air cleaner element.
Perform "After-inspection work" of INFOR-
MATION section.
Go to step 4.