Hino 238, Workshop Manual

Page: 149 / 919

ENGINE CONTROL SYSTEM (J08E) 4–926
CHECKLIST: P203F
DTC: P203F Empty reductant tank Inspection procedure
Step Action Description Judgement
Check
(Yes/No)
Yes No
1
Inspect the
DEF tank Fill the DEF tank to the Full mark.
DEF indicator
indicates 100
%: Go to YES.
DEF indicator
does not indi-
cate 100 %:
Go to NO.
Procedure
completed.
Perform "After-
inspection
work" of
INFORMA-
TION section.
Go to step 2.
2
Inspect the
DEF tank level
sensor con-
nector
Check the connection of the DEF
tank level sensor connector
(Looseness and poor contact).
Failure found:
Go to YES.
No failure
found: Go to
NO.
Connect
securely,
repair if
needed.
Perform "After-
inspection
work" of
INFORMA-
TION section.
Go to step 3.
3
Inspect the
DEF tank level
sensor Check if the DEF tank level sen-
sor float is disconnected, stuck, or
damaged.
Failure found:
Go to YES.
No failure
found: Go to
NO.
Replace the
DEF tank level
sensor.
Perform "After-
inspection
work" of
INFORMA-
TION section.
Go to step 4.
4
Check the
DTC detected
(Engine)
[Hino-DX]
Check if a CAN communication
system malfunction (U02A2) has
been detected in [Engine].
DTC U02A2
has been
detected: Go
to YES.
No DTC has
been detected:
Go to NO.
Go to the diag-
nostic proce-
dure of a
related DTC. Replace the
DEF tank level
sensor, and go
to step 5.
5
Check the
DTC detected
(Engine ECU)
[Hino-DX]
Check if P203F has been
detected in [Engine].
DTC P203F
has been
detected: Go
to YES.
No DTC has
been detected:
Go to NO.
Replace the
engine ECU.
Perform "After-
inspection
work" of
INFORMA-
TION section. Procedure
completed.
Perform "After-
inspection
work" of
INFORMA-
TION section.