HYBRID/TROUBLE SHOOTING
3–800
6
Inspecting the
inverter (com-
munication
abnormality)
[HINO-DX]
1. In [Fault Information] on the
diagnosis tool screen, check if
DTC U0073-91 (Abnormality in
control CAN communication) is
detected in the inverter.
DTC U0073-
91 is detected:
Go to YES.
DTC U0073-
91 is not
detected: Go
to NO.
Perform trou-
bleshooting for
each of related
DTC.
(Perform trou-
bleshooting of
U0073-91
Step 2 and
onward.)
Go to step 7.
7
Inspecting the
HV ECU (com-
munication
blackout)
[HINO-DX]
1. In [Fault Information] on the
diagnosis tool screen, check if
DTC U0110-14 (Inverter CAN
communication blackout) is
detected in the HV ECU.
DTC U0110-
14 is detected:
Go to YES.
DTC U0110-
14 is not
detected: Go
to NO.
Go to step 8.
Go to step 10.
8
Reading the
DTC 1 [HINO-
DX]
1. In [Fault Information] on the
diagnosis tool screen, check if
any control CAN-related ECU
communication blackout is
detected other than inverter
CAN blackout (U0110-14) in
the HV ECU.
•
[U110A] Vehicle control ECU
CAN communication black-
out
•
[U0101] AT ECU CAN com-
munication blackout
•
[U1136] Clutch ECU CAN
communication blackout
•
[U0121] ABS ECU CAN
communication blackout
•
[U0155] Meter CAN commu-
nication blackout
All communi-
cation blackout
DTCs are
detected: Go
to YES.
All communi-
cation blackout
DTCs are not
detected: Go
to NO.
Go to step 9.
(All communi-
cation black-
outs have
been
occurred.)
Go to step 10.
9
Inspecting the
vehicle control
ECU 1 [HINO-
DX]
1. In [Fault Information] on the
diagnosis tool screen, check if
DTC U0155 (Meter CAN com-
munication blackout) is
detected in the vehicle control
ECU.
DTC U0155 is
detected: Go
to YES.
DTC U0155 is
not detected:
Go to NO.
Refer to the
"CONTROL
CAN COMMU-
NICATION
LINE
(HYBRID)" in
the chapter
"CONTROL
SYSTEM".
Replace the
HV ECU.
10
Inspecting the
vehicle control
ECU 2 [HINO-
DX]
1. In [Fault Information] on the
diagnosis tool screen, check if
DTC U0293 (HV ECU CAN
communication blackout) is
detected in the vehicle control
ECU.
DTC U0293 is
detected: Go
to YES.
DTC U0293 is
not detected:
Go to NO.
Replace the
HV ECU.
Replace the
inverter.
U0293 (TC31)
HV ECU CAN communication blackout
Inspection Procedure
Step
Action
Description
Judgement
Check
(Yes/No)
Yes
No