ENGINE (J05E)/TROUBLESHOOTING
2–486
INSPECTION PROCEDURE: P0402
1.
Set the starter key to the "LOCK" position.
2.
Connect the vehicle to HINO DX
Ⅱ
.
3.
Set the starter key to the "ON" position.
4.
Select [Inspection Menu] and then [EGR inspection] from the
menu, then inspect the response delay at the Target EGR position
and Actual EGR position.
! CAUTION
Perform the inspection while the engine is stopped to avoid dam-
ages.
<Inspection procedure>
(1) Select [Inspection Menu].
(2) Select [EGR inspection].
(3) Select [Start inspection].
(4) Select [EGR opening UP]:
•
Inspect the response delay at each step of the Target EGR position
and Actual EGR position from 0 to 90%.
(5) Select [EGR opening DOWN]:
•
Inspect the response delay at each step of the Target EGR position
and Actual EGR position from 90 to 0%.
HINT
The EGR opening position changes of around 10% per step
between 0
–
90%.
NO
YES
1
Check the response delay of the EGR valve
(4)
(5)
(3)
(1)
(2)
SHTS021270300453
Standard values
From the Target EGR position to the Actual EGR position,
the response delay should be within 5 seconds.
Do the measurements meet the standard value?
Go to step 2.
Replace the EGR valve.
Perform "After-inspection work" of INFOR-
MATION section.
