Hino 238, Workshop Manual

Page: 381 / 919

ENGINE CONTROL SYSTEM (J08E) 4–1158
14
Inspect the
exhaust gas
temperature
sensor (burner
outlet) unit
Measure the resistance between
the terminals of the exhaust gas
temperature sensor (burner out-
let).
<Tester connections>
Exhaust gas temperature sensor
(burner outlet)
DIT+
–
DIT-
<Standard values>
0.3
–
1.8

The measure-
ments meet
the standard
value: Go to
YES.
The measure-
ments do not
meet the stan-
dard value: Go
to NO.
Go to step 15.
Replace the
sensor.
Perform "After-
inspection
work" of
INFORMA-
TION section.
15
Check the
response
delay of the
EGR valve
Select [Check functions] and then
[EGR check] from the menu, then
inspect the response delay at the
Target EGR position and Actual
EGR position.
<Inspection procedure>
(1) Select [Check functions].
(2) Select [EGR check].
(3) Click [Check start].
(4) Click [EGR opening UP]:
•
Inspect the response delay
at each step of the Target
EGR position and Actual
EGR position from 0 to 90
%.
(5) Click [EGR opening DOWN]:
• Inspect the response delay
at each step of the Target
EGR position and Actual
EGR position from 90 to 0
%.
<Standard values>
From the Target EGR position to
the Actual EGR position, the
response delay should be within 5
seconds.
The measure-
ments meet
the standard
value: Go to
YES.
The measure-
ments do not
meet the stan-
dard value: Go
to NO.
Go to step 16.
Replace the
EGR valve.
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