Hino 238, Workshop Manual

Page: 631 / 919

DEF SCR SYSTEM (DCU) 5–65
CHECKLIST: P062F
DTC: P062F Controller store data error Inspection Procedure
Step Action Description Judgement
Check
(Yes/No)
Yes No
1
Check the
DTC detected
(DCU) [Hino-
DX]
1. Connect the vehicle to Hino-
DX.
2. Set the starter switch to the
"ON" position.
3. Select [DCU] and check if
Hino-DX is communicating
with the DCU.
4. Erase the malfunction his-
tory.
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 temperature (SCR
inlet) drops below 200 °C
{392 °F}.
7. Set the starter switch to the
"ON" position.
8. Check if P062F has been
detected in [DCU].
DTC P062F
has been
detected: Go
to YES.
No DTC has
been detected:
Go to NO.
Replace the
DCU. (After
replacing the
DCU, perform
a DPR forced
regeneration.)
Perform "After-
inspection
work" of
INFORMA-
TION section.
Erase the mal-
function his-
tory and
recheck the
DTC.
Perform "After-
inspection
work" of
INFORMA-
TION section.