HYBRID/TROUBLE SHOOTING
3–503
DTC: P0A1B (TCBB)
EN01H03ZZZ030602004030
DTC: P0A1B (TCBB) Abnormality in inverter (ECU system)
INFORMATION
1.
Technical description
•
–
<Description of malfunction>
•
Detected an abnormality in the inverter (resolver excitation power supply voltage abnormality).
2.
DTC set condition
(1)
DTC detection condition
•
Control power supply voltage is 8 V or more.
•
Inverter start signal is ON.
(2)
Judgement criteria
•
When one of the following conditions continues for 0.06 second:
- Resolver excitation power supply voltage is less than 21.0 V.
- Resolver excitation power supply voltage is more than 30.5 V.
3.
Reset condition
•
The state in which resolver excitation power supply voltage is 21.0 V or more and 30.5 V or less is detected contin-
uously for 0.2 second.
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>
•
The engine may become unable to start. (Note, however, that vehicles equipped with a starter will be started with
the starter.)
•
Idling stop is not available.
•
The regeneration function stops, reducing the feeling of deceleration during deceleration.
•
Once stopped, the vehicle may become unable to drive.
6.
Pre-inspection work
•
Check the battery voltage to make sure that there is no abnormality.
7.
After-inspection work
•
Clear the recorded DTC.
•
Check that no DTC is detected after test-driving the vehicle.
8.
Estimated failure factors
•
Malfunction of inverter
