Hino 238, Workshop Manual

Page: 383 / 919

ENGINE CONTROL SYSTEM (J08E) 4–1160
19
Inspect the
injector [Hino-
DX]
Check the injection quantity and
the rotational fluctuation.
1. Select [Injection quantity]
from the [Data Monitor]
menu, and measure the fuel
injection quantity.
2. Select [Engine speed] from
[Data Monitor] on the menu,
and measure the rotational
fluctuation.
<Measurement conditions>
Engine speed: 1,500 r/min
No-load, Neutral, A/C off and Air
compressor un-operating Engine
coolant temperature: more than
80

C {176

F}
<Standard values>
Injection quantity (mm
3
/st): 5.0q
or more for with MT vehicle , 6.0q
or more for with
Allison

2200, 2500, 3500 vehi-
cle.
Rotation fluctuation (r/min): 26 or
less (for with all type of transmis-
sion vehicle).
Measure-
ments met the
standard
value. (Both
injection
amount and
rotational vari-
ation.): Go to
YES.
The measure-
ments do not
meet the stan-
dard value: Go
to NO.
Go to step 20.
Replace the
injector.
Perform "After-
inspection
work" of
INFORMA-
TION section.
20
Check the
DTC detected
(Engine ECU)
[Hino-DX]
Perform engine warm-up.
(Engine coolant temperature:
60

C {140

F} or more), and
check if P244A has been
detected in [Engine].
DTC P244A
has been
detected: Go
to YES.
No DTC has
been detected:
Go to NO.
Replace the
engine ECU.
Perform "After-
inspection
work" of
INFORMA-
TION section. Procedure
completed.
Perform "After-
inspection
work" of
INFORMA-
TION section.
DTC: P244A Filtering performance (missing substrate) Inspection procedure
Step Action Description Judgement
Check
(Yes/No)
Yes No