HYBRID/TROUBLE SHOOTING
3–544
5
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.
3. Using the electrical tester, mea-
sure the resistance between
the terminals of PCU harness
(12P) lower-side connector.
<Measurement conditions>
Starter key: LOCK
<Tester connections>
PCU harness (12P) lower-side
connector
4th terminal – GND
8th terminal – GND
4th terminal – 8th terminal
<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 6.
Replace the
PCU wire har-
ness (lower
side).
6
Inspecting the
PCU wire har-
ness (lower
side) for conti-
nuity
1. Using the electrical tester, mea-
sure the resistance between
the terminals of PCU harness
(12P) lower-side connector and
inverter connector.
<Measurement conditions>
Starter key: LOCK
<Tester connections>
PCU harness (12P) lower-side
connector – Inverter connector
4th terminal – 34th terminal
8th terminal – 35th terminal
<Standard values>
1
or less (With 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 7.
Replace the
PCU wire har-
ness (lower
side).
7
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
P0A2C-DA is detected.
DTC P0A2B-
ED is
detected: Go
to YES.
DTC P0A2B-
ED is not
detected: Go
to NO.
Replace the
inverter.
The inspec-
tion is com-
pleted.
(Temporary
actuation of
protection
function due to
external noise)
P0A2B (TCED)
Abnormality in characteristics of
motor temperature sensor
Inspection Procedure
Step
Action
Description
Judgement
Check
(Yes/No)
Yes
No