HYBRID/TROUBLE SHOOTING
3–215
CHECKLIST: P0A93 (TC7A)
P0A93 (TC7A)
Abnormality in inverter cooling system
Inspection Procedure
Step
Action
Description
Judgement
Check
(Yes/No)
Yes
No
1
Inspecting the
coolant sys-
tem route
1. Check the coolant system route
(radiator, inverter, and hose) for
any damage or water leakage.
Defect is
found: Go to
YES.
Defect is not
found: Go to
NO.
Repair or
replace the
defective part.
After repair/
replacement,
perform the
inspection
again.
Go to step 2.
2
Inspecting the
coolant level
1. Remove the radiator cap and
check the height from the cool-
ant level to the filling port.
Coolant level
is about 10
mm from the
filling port: Go
to YES.
Coolant level
is not about 10
mm from the
filling port: Go
to NO.
Go to step 3.
Add coolant.
(See "Adding
coolant.")
After adding
coolant, per-
form the
inspection
again.
3
Reading the
DTC [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 other coolant temperature
sensor system DTC (listed
below) is detected.
•
P0A02-78, P0A03-79,
P0A06-7F, P0A07-7E,
P0C73-80, P3128-7D,
P3129-7C, P314C-82,
P314D-81
DTC other
than P0A93-
7A is detected:
Go to YES.
DTC other
than P0A93-
7A is not
detected: Go
to NO.
Perform trou-
bleshooting for
each of related
DTC.
Go to step 4.
