HYBRID/TROUBLE SHOOTING
3–494
DTC: P0A1B (TCA9)
EN01H03ZZZ030602004028
DTC: P0A1B (TCA9) Abnormality in inverter (ECU system)
INFORMATION
1.
Technical description
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<Description of malfunction>
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Detected an abnormality in the inverter (VIN V signal High abnormality).
2.
DTC set condition
(1)
DTC detection condition
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Control power supply voltage is 8 V or more.
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Inverter start signal is ON.
•
Since the over voltage signal from the drive circuit is turned ON, 0.05 second or more has passed.
(2)
Judgement criteria
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The state in which inverter DC voltage is more than 450 V is detected continuously for 0.1 second.
3.
Reset condition
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The state in which input voltage is 11.25 V or more and 450 V or less is detected continuously for 0.2 second.
4.
Indication, warning or system control regulation when the DTC is set.
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MIL: ON
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HV warning light: ON
5.
Symptoms on the vehicle when the DTC is set
<Symptoms on the vehicle due to backup control (fail safe)>
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<Symptoms on the vehicle due to malfunction>
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The engine may become unable to start. (Note, however, that vehicles equipped with a starter will be started with
the starter.)
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Idling stop is not available.
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The regeneration function stops, reducing the feeling of deceleration during deceleration.
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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
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Malfunction of inverter
