HYBRID/TROUBLE SHOOTING
3–300
10
Reproduction
check [HINO-
DX]
1. Connect all the connectors that
have been disconnected to
restore the system.
2. Set the starter key to the
"LOCK" position.
3. Connect the diagnosis tool
(HINO-DX) to the vehicle.
4. Set the starter key to the "ON"
position.
5. Clear the malfunction history.
6. Set the starter key to the "ON"
position and wait for 1 minute.
7. Set the starter key to the
"LOCK" position and wait for 1
minute.
8. Set the starter key to the "ON"
position and wait for 1 minute.
9. In [Fault Information] on the
diagnosis tool screen, check if
P3128-7D is detected.
DTC P3128-
7D is detected:
Go to YES.
DTC P3128-
7D is not
detected: Go
to NO.
Replace the
HV ECU.
The inspec-
tion is com-
pleted.
P3128 (TC7D)
Abnormality in HV radiator fan revolution
number Low
Inspection Procedure
Step
Action
Description
Judgement
Check
(Yes/No)
Yes
No
