DEF SCR SYSTEM (DCU)
5–233
INSPECTION PROCEDURE: P20B2
1.
Set the starter switch to the "LOCK" position.
2.
Connect the vehicle to Hino-DX.
3.
Set the starter switch to the "ON" position.
4.
Select [DCU] and check if any DTC other than P20B2 (for exam-
ple, P20B1, U02A2) has been detected in [Fault Information].
NO
YES
1.
Check if the connection of the DEF tank temperature sensor con-
nector (Looseness or poor contact).
NO
YES
1
Check the DTC detected (DCU) [Hino-DX]
Select
DCU
SAPH16F020400155
Has a DTC other than P20B2 been detected?
Go to diagnosis procedure of a related DTC.
Go to step 2.
2
Inspect the DEF tank temperature sensor connector
Was any failure found?
Connect securely, repair if needed.
Perform "After-inspection work" of INFOR-
MATION section.
Go to step 3.
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 ...
