DEF SCR SYSTEM (DCU)
5–132
NO
YES
1.
Perform an engine warm-up. (Water temperature: 60
C {140
F}
or more)
2.
Stop the engine and set the starter switch to the "LOCK" position.
3.
Connect the vehicle to Hino-DX.
4.
Set the starter switch to the "ON" position.
5.
Select [DCU] and check if P2048 has been detected in [Fault Infor-
mation].
NO
YES
Measurement
conditions
Tester
connections
Standard values
Starter switch:
LOCK
DCU 86P vehicle-
side connector
DML
–
DMH
20
C {68
F}:
11.4
–
12.6
Do the measurements meet the standard value?
Go to step 5.
Repair or replace the harness.
Perform "After-inspection work" of INFOR-
MATION section.
5
Check the DTC detected (DCU)
Select
DCU
SAPH16F020400087
Has DTC P2048 been detected?
Replace the DCU. (Perform DPR forced
regeneration after replacement.)
Perform "After-inspection work" of INFOR-
MATION section.
Procedure completed.
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 ...
