ENGINE CONTROL SYSTEM (J08E)
4–950
NO
YES
1.
Set the starter switch to the "LOCK" position.
2.
Replace the SCR catalyst.
3.
Set the starter switch to the "ON" position.
4.
Erase the trouble history.
5.
Execute a forced DPR regeneration.
6.
Select [Engine] and check if P20EE has been detected in [Fault
Information].
NO
YES
Go to step 12.
Procedure completed.
(NOx sensor 1 and NOx sensor 2 are faulty.)
Perform "After-inspection work" of INFOR-
MATION section.
12
Inspect the SCR catalyst [Hino-DX]
Select
Engine
SAPH16F010300739
Has DTC P20EE been detected?
Replace the engine ECU.
Perform "After-inspection work" of INFOR-
MATION section.
Procedure completed.
(SCR catalyst is faulty.)
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 ...
