HYBRID/TROUBLE SHOOTING
3–191
CHECKLIST: P0A90 (TC2A)
P0A90 (TC2A)
Abnormality in motor function
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
Preparation for
inspection
1. Set the starter key to the
"LOCK" position.
2. Disconnect the service plug
and wait for 7 minutes or more.
Inspection
preparation is
completed: Go
to YES.
Inspection
preparation is
not com-
pleted: Go to
NO.
Go to step 3.
Perform the
inspection
preparation
again.
3
Inspecting the
continuity of
three-phase
cable 1
1. Disconnect the three-phase
cable (U, V, and W terminals)
from the inverter and HV motor.
2. Using the electrical tester, mea-
sure the resistance between
the terminals of both ends of
the three-phase cable.
<Measurement conditions>
Starter key: LOCK
<Tester connections>
Three-phase cable
U terminal
–
U terminal
V terminal
–
V terminal
W terminal
–
W terminal
<Standard values>
Less than 1
The mea-
sured value is
within the
range of stan-
dard value: Go
to YES.
The mea-
sured value is
not within the
range of stan-
dard value: Go
to NO.
Go to step 4.
•
When the
central ter-
minal block
is provided:
Go to step
7.
•
When no
central ter-
minal block
is provided:
Replace the
three-phase
cable.
