DEF SCR SYSTEM (DCU)
5–277
NO
YES
1.
Set the starter switch to the "LOCK" position.
2.
Replace DEF injector with a new one. (Do not install it on the muf-
fler.)
3.
Set the starter switch to the "ON" position.
4.
Perform DEF addition test as same as step 2.
NO
YES
Procedure completed. DEF crystal clogging
is considered resolved.
Perform "After-inspection work" of INFOR-
MATION section.
Go to step 3.
3
Inspect the DEF injector 2 [Hino-DX]
Select
DCU
SAPH16F020400188
Is operation normal?
New injector installed in the muffler. Proce-
dure completed. After installing the injector,
idle the engine (for about 10 min.) and from
the menu [Data Monitor] check if the DEF is
stable between 800 kPa {116 psi} and 1,051
kPa {152 psi}.
Perform "After-inspection work" of INFOR-
MATION section.
Re-install the DEF injector and replace the
DEF pipe (pressure line). After replacing the
pipe, idle the engine (for about 10 min.) and
from the menu [Data Monitor] check if the
DEF is stable between 800 kPa {116 psi} and
1,051 kPa {152 psi}.
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 ...
