DTC P0A1D-94: Hybrid/EV Powertrain Control Module Unexpected Operation [12/2022 - ]: Procedure

Pre-procedure1

1. None

   Procedure1

2. Check the connections of the hybrid vehicle control ECU connector.

   HINT: 

   Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [12/2022 - ]

   OK

   The connectors are connected securely and there are no contact problems.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result

   Result
   OK
   NG

   Post-procedure1

3. Turn the ignition switch off.

Result: 

NG 

CONNECT SECURELY 

Result: 

OK 

See step  2

Pre-procedure1

1. 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 repair information because this may cause a malfunction.

   Procedure1

2. Check the connector connections and contact pressure of the relevant terminals for the battery ECU assembly.

   HINT: 

   Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [12/2022 - ]

   OK

   The connector is connected securely and there are no contact problems.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result

   Result
   OK
   NG

   Post-procedure1

3. None

Result: 

OK 

REPLACE HYBRID VEHICLE CONTROL ECU 

Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

Result: 

NG 

CONNECT SECURELY