HYBRID/TROUBLE SHOOTING
3–121
CHECKLIST: P0A06 (TC7F)
P0A06 (TC7F)
HV water pump drive signal Low abnormality
Inspection Procedure
Step
Action
Description
Judgement
Check
(Yes/No)
Yes
No
1
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
DTC P324B-62 or P324C-61 is
detected.
DTC P324B-
62 or P324C-
61 is detected:
Go to YES.
DTC P324B-
62 or P324C-
61 is not
detected: Go
to NO.
Perform trou-
bleshooting for
each of related
DTC.
Go to step 2.
2
Checking the
activation of
inverter cool-
ing pump
[HINO-DX]
1. In [Activation Test] on the diag-
nosis tool screen, select [HV
water pump drive duty value].
2. Run the inverter cooling pump
at a duty value of 90% to check
that the cooling fan is rotating.
<Measurement conditions>
Starter key: ON
<Measured item>
HV water pump drive duty value
<Standard values>
The cooling fan is running (rotat-
ing).
Cooling fan is
running: Go to
YES.Cooling
fan is not run-
ning: Go to
NO.
Go to step 6.
Go to step 3.
3
Inspecting the
voltage of
vehicle wire
harness
1. Set the starter key to the
"LOCK" position.
2. Disconnect the PCU harness
(24P) connector.
3. Using the electrical tester, mea-
sure the voltage between the
3rd terminal of PCU harness
(24P) vehicle-side connector
and the ground.
<Measurement conditions>
Starter key: LOCK
<Tester connections>
PCU harness (24P) vehicle-side
connector
3rd terminal
–
GND
<Standard values>
9 V or more
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.
Inspect the
power supply
circuit ([PCU-
B2 20A] fuse
and wire har-
ness).
