DEF SCR SYSTEM (DCU)
5–127
INSPECTION PROCEDURE: P2047
NOTICE
Prepare a beaker or similar, plus a larger measuring vessel for
measuring the DEF to be injected, before perform this inspection.
(If the vessel is small, there is dispersion at the time of injection
from the injector, and the measuring quantity decreases.)
1.
Set the starter switch to the "LOCK" position.
2.
Remove the DEF injector from the muffler.
3.
Set the starter switch to the "ON" position.
4.
Select [DCU].
5.
Select [Check functions] on Hino-DX menu and check the opera-
tion of the DEF injector.
<Inspection procedure>
(1) Select [Check functions].
(2) Select [DEF addition test].
(3) Perform addition test as instructed on the Hino-DX screen.
(Perform all three patterns)
NOTICE
When the DEF tank temperature is -5
C (23
F) or lower, perform
warm-up to raise it to 10
C (50
F) or higher.
NO
YES
1
Inspect DEF injector (1) [Hino-DX]
(3)
(1)
(2)
SAPH16F020400082
Is operation normal?
Procedure completed.
Perform "After-inspection work" of INFOR-
MATION section.
Replace the DEF injector. (Perform DPR
forced regeneration after replacement.)
Perform "After-inspection work" of INFOR-
MATION section.
Summary of Contents for 238
Page 201: ...ENGINE CONTROL SYSTEM J08E 4 978 Harness disconnection or short circuit ...
Page 215: ...ENGINE CONTROL SYSTEM J08E 4 992 Malfunction of sensor 2 Malfunction of engine ECU ...
Page 301: ...ENGINE CONTROL SYSTEM J08E 4 1078 8 Estimated failure factors Malfunction of engine ECU ...
Page 709: ...DEF SCR SYSTEM DCU 5 143 8 Estimated failure factors DEF pump pressure sensor malfunction ...
