HYBRID/TROUBLE SHOOTING
3–601
3
Inspecting the
PCU wire har-
ness (lower
side) for short
circuit
1. Disconnect the inverter con-
nector.
2. Using the electrical tester, mea-
sure the resistance between
the terminals of PCU harness
(12P) lower-side connector and
the ground.
<Measurement conditions>
Starter key: LOCK
<Tester connections>
PCU harness (12P) lower-side
connector
1st terminal – 2nd, 5th, 6th, 9th,
10th, 11th terminal
2nd terminal – 1st, 5th, 6th, 8th,
10th, 11th terminal
5th terminal – 1st, 2nd, 6th, 9th,
10th, 11th terminal
6th terminal – 1st, 2nd, 5th, 9th,
10th, 11th terminal
10th terminal – 1st, 2nd, 5th, 6th,
9th, 11th terminal
11th terminal – 1st, 2nd, 5th, 6th,
9th, 10th terminal
PCU harness (12P) lower-side
connector – GND
1st terminal – GND
2nd terminal – GND
5th terminal – GND
6th terminal – GND
10th terminal – GND
11th terminal – GND
<Standard values>
10 k
or more (No continuity)
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.
Replace the
PCU wire har-
ness (lower
side).
4
Reproduction
check [HINO-
DX]
1. Connect all the connectors that
have been disconnected to
restore the system.
2. Connect the diagnosis tool
(HINO-DX) to the vehicle.
3. Set the starter key to the "ON"
position.
4. Clear the malfunction history.
5. Perform a test run. (accelerate
and decelerate running for
approximately 1 hour).
6. In [Fault Information] on the
diagnosis tool screen, check if
P0A3F-B7 is detected.
DTC P0A3F-
B7 is detected:
Go to YES.
DTC P0A3F-
B7 is not
detected: Go
to NO.
Replace the
inverter.
The inspec-
tion is com-
pleted.
(Temporary
actuation of
protection
function due to
external noise)
P0A3F (TCB7)
Short-circuit abnormality between
resolver phases
Inspection Procedure
Step
Action
Description
Judgement
Check
(Yes/No)
Yes
No