HYBRID/TROUBLE SHOOTING
3–89
DTC: P0A01 (TC7B)
EN01H03ZZZ030602003013
DTC: P0A01 (TC7B) Abnormality in characteristics of inverter coolant temperature sensor
INFORMATION
1.
Technical description
•
–
<Description of malfunction>
•
Detected an abnormality in the inverter cooling circuit (abnormality in the characteristics of inverter coolant temper-
ature sensor).
2.
DTC set condition
(1)
DTC detection condition
•
The starter key is set to the ON position.
•
The control power supply voltage is 10 V or more.
•
The drive duty of HV water pump is 40% or more.
•
The drive duty of HV water pump is 60% or less.
•
The square sum of motor current for 20 seconds is 200,000 A
2
or more.
•
The motor current sensor shows no abnormality.
•
The output of inverter start relay is ON.
(2)
Judgement criteria
•
The difference in the inverter coolant temperature (Max-Min) for 20 seconds is less than 0.5
C {32.9
F}.
3.
Reset condition
•
The difference in the inverter coolant temperature (Max-Min) for 20 seconds is 0.5
C {32.9
F} or more.
4.
Indication, warning or system control regulation when the DTC is set.
•
MIL: ON
•
HV warning light: ON
5.
Symptoms on the vehicle when the DTC is set
<Symptoms on the vehicle due to backup control (fail safe)>
•
–
<Symptoms on the vehicle due to malfunction>
•
–
6.
Pre-inspection work
•
Check the battery voltage to make sure that there is no abnormality.
HV ECU
Coolant temperature sensor
H
H
K
K
79
80
2
1
THW
E2
SHTS03ZZZ0300064
