DEF SCR SYSTEM (DCU)
5–191
INSPECTION PROCEDURE: P208B
1.
Set the starter switch to the "LOCK" position.
2.
Replace the DEF pump with a new one.
3.
Connect the vehicle to Hino-DX.
4.
Start up the engine and keep the engine idling (about 10 minutes).
5.
Select [DCU].
6.
Select [DEF pump pressure] from the [Data Monitor] and check if
the DEF pressure is maintained around 900 kPa (800 kPa
–
1050
kPa) {131 psi (116 psi
–
152 psi)}.
NO
YES
1
Inspection of the DEF pump pressure [Hino-DX]
Select
DCU
SAPH16F020400123
Standard values
DEF pressure:
900 kPa (800 kPa
–
1,050 kPa) {131 psi (116 psi
–
152 psi)}
Do the measurements meet the standard value?
Procedure completed.
Perform "After-inspection work" of INFOR-
MATION section.
Replace the DCU.
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 ...
