HYBRID/TROUBLE SHOOTING
3–144
CHECKLIST: P0A78 (TC22)
P0A78 (TC22)
Abnormality in the inverter
Inspection Procedure
Step
Action
Description
Judgement
Check
(Yes/No)
Yes
No
1
Inspecting the
inverter
[HINO-DX]
1. Set the starter key to the
"LOCK" position.
2. Connect the diagnosis tool
(HINO-DX) to the vehicle.
3. Set the starter key to the "ON"
position.
4. In [Fault Information] on the
diagnosis tool screen, check if
any DTC related to the inverter
line is detected.
DTC related to
the inverter
line is
detected: Go
to YES.
DTC related to
the inverter
line is not
detected: Go
to NO.
Perform trou-
bleshooting for
each of related
DTC.
Go to step 2.
2
Reproduction
check [HINO-
DX]
1. Clear the malfunction history.
2. Set the starter key to the
"LOCK" position and wait for 1
minute.
3. Perform a test run for approxi-
mately 1 hour. (Replace the
inverter if starting fails.)
4. In [Fault Information] on the
diagnosis tool screen, check if
P0A78-22 is detected.
DTC P0A78-
22 is detected:
Go to YES.
DTC P0A78-
22 is not
detected: Go
to NO.
Replace the
inverter.
The inspec-
tion is com-
pleted.
