Check The Response Delay Of The Egr Valve - Hino Motors HINO 155 series Workshop Manual

8

Check the response delay of the EGR valve

(2)
Do the measurements meet the standard value?
Go to step 9.
ENGINE (J05E)/TROUBLESHOOTING
1. Set the starter key to the "ON" position.
(1)
2. Check the time lag (following characteristics) of the target EGR
(3)
valve opening and actual EGR valve opening.
! CAUTION
(4)
Perform the inspection while the engine is stopped to avoid
(5)
engine damages.
<Inspection procedure>
(1) Select [Inspection Menu].
(2) Select [EGR inspection].
(3) Select [Start inspection].
SHTS021270300188
(4) Select [EGR opening UP]:
• Check each step from 0% – 90% of the time lag (following character-
istics) of the target EGR valve opening and actual EGR valve open-
ing.
(5) Select [EGR opening DOWN]:
• Check each step from 90% – 0% of the time lag (following character-
istics) of the target EGR valve opening and actual EGR valve open-
ing.
HINT
In EGR openings from 0% – 90%, 1 step corresponds to a 10%
change.
The response delay should be less than 5 seconds.
YES
Standard values
NO
Replace the EGR valve.
Perform "After-inspection work" of INFOR-
MATION section.
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