Hino 238, Workshop Manual

Page: 496 / 919

ENGINE CONTROL SYSTEM (J08E) 4–1273
4
Check the
response
delay of the
VNT controller
2 [Hino-DX]
Select [Check functions] from the
menu, then inspect the response
delay at the Target VNT position
and Actual VNT position.
<Inspection procedure>
(1) Select [Check functions].
(2) Select [VNT check].
(3) Click [Check start].
(4) Select [VNT opening UP]:
•
Inspect the response delay
at each step of the Target
VNT position and Actual
VNT position from 0 to 90
%.
(5) Select [VNT opening DOWN]:
•
Inspect the response delay
at each step of the Target
VNT position and Actual
VNT position from 90 to 0
%.
<Standard values>
From the Target VNT position to
the Actual VNT position, the
response delay should be within 3
seconds.
The measure-
ments meet
the standard
value: Go to
YES.
The measure-
ments do not
meet the stan-
dard value: Go
to NO.
Procedure
completed.
Perform "After-
inspection
work" of
INFORMA-
TION section. Replace the
turbocharger.
Perform "After-
inspection
work" of
INFORMA-
TION section.
DTC: P259F Nozzle operating range failure -WIDE
(VNT actuator wiping error (too wide range))
Inspection procedure
Step Action Description Judgement
Check
(Yes/No)
Yes No