DTC P0A1D-94: Hybrid/EV Powertrain Control Module Unexpected Operation [11/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Toyota Corolla Cross, 2024 Toyota Corolla Cross, and 2023 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU)
- Check the connections of the hybrid vehicle control ECU connector.
Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [09/2021 - ]
OK
The connectors are connected securely and there are no contact problems.
Result
Result OK NG
Result:
NG
CONNECT SECURELY
Result:
OK
See step 2
- Check the connections of the hybrid vehicle control ECU connector.
- CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY) WARNING:
Be sure to wear insulated gloves and protective goggles.
- Check that the service plug grip is not installed.NOTE:
After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the appropriate servce information because this may cause a malfunction.
- Check the connector connections and contact pressure of the relevant terminals for the battery ECU assembly.
Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [09/2021 - ]
OK
The connector is connected securely and there are no contact problems.
Result
Result OK NG
Result:
OK
REPLACE HYBRID VEHICLE CONTROL ECU
Refer to REMOVAL [11/2022 - 12/2024] , or refer to REMOVAL [12/2024 - ]
Result:
NG
CONNECT SECURELY
- Check that the service plug grip is not installed.