HYBRID/TROUBLE SHOOTING
3–123
6
Inspecting the
continuity of
PCU wire har-
ness (lower
side)
1. Set the starter key to the
"LOCK" position.
2. Disconnect the HV ECU2 con-
nector.
3. Using the electrical tester, mea-
sure the resistance between
the inverter cooling pump con-
nector and the HV ECU2 con-
nector terminal.
<Measurement conditions>
Starter key: LOCK
<Tester connections>
Inverter cooling pump connector
–
HV ECU2 connector
3rd terminal
–
17th 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 7.
Replace the
PCU wire har-
ness (lower
side).
7
Inspecting the
PCU wire har-
ness (lower
side) for short
circuit
1. Using the electrical tester, mea-
sure the resistance between
the 3rd terminal of inverter
cooling pump connector and
GND.
<Measurement conditions>
Starter key: LOCK
<Tester connections>
Inverter cooling pump connector
3rd terminal
–
GND
<Standard values>
10 k
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 8.
Replace the
PCU wire har-
ness (lower
side).
8
Inspecting the
signal line of
PCU wire har-
ness (lower
side) for short
circuit
1. For the 3rd terminal of inverter
cooling pump connector,
inspect the signal line of PCU
wire harness (lower side) for
short circuit. (See "Inspecting
the PCU harness signal line for
short circuit.")
<Measurement conditions>
Starter key: LOCK
<Tester connections>
Inverter cooling pump connector
3rd terminal
–
Each signal line
<Standard values>
10 k
or more
Defect is
found: Go to
YES.
Defect is not
found: Go to
NO.
Replace the
PCU wire har-
ness (lower
side).
Replace the
inverter cool-
ing pump.
After replace-
ment, go to
step 9.
P0A06 (TC7F)
HV water pump drive signal Low abnormality
Inspection Procedure
Step
Action
Description
Judgement
Check
(Yes/No)
Yes
No
