Hino Motors HINO 155 series Workshop Manual page 523

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