DEF SCR SYSTEM (DCU)
5–64
INSPECTION PROCEDURE: P062F
1.
Connect the vehicle to Hino-DX.
2.
Set the starter switch to the "ON" position.
3.
Select [DCU] and check if the menu is communicating with the
DCU.
4.
Erase the malfunction history.
5.
Set the starter switch to the "LOCK" position.
6.
Check if the DCU main relay is OFF in the Hino-DX menu. (This
cuts off the communication between Hino-DX and the DCU.)
NOTICE
•
The main relay turns OFF 1 minute after the exhaust gas tem-
perature (SCR inlet) drops below 200 °C {392 °F}.
7.
Set the starter switch to the "ON" position.
8.
Select [DCU] and check if P062F has been detected in [Fault Infor-
mation].
NO
YES
1
Check the DTC detected (DCU) [Hino-DX]
Select
DCU
When communicat-
ion with the DCU is
interrupted while
the DCU is connec-
ted to the Hino-DX,
the connection
symbol at the left
bottom of the Hino-
DX screen (figure
on the left) becom-
es disconnected.
SAPH16F020400046
Has DTC P062F been detected?
Replace the DCU. (After replacing the DCU,
perform a DPR forced regeneration.)
Perform "After-inspection work" of INFOR-
MATION section.
Erase the malfunction history and recheck
the DTC.
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 ...
