DTC C1259: HV Control System Regenerative Malfunction; DTC C1310: HV System Malfunction [08/2020 - 12/2021]: Procedure

1. Check if a hybrid control system DTC is output.

   for NICKEL METAL HYDRIDE BATTERY: Refer to DTC CHECK / CLEAR [02/2019 - 10/2022]

   for LITHIUM-ION BATTERY: Refer to DTC CHECK / CLEAR [06/2020 - 10/2022]

   Powertrain > Hybrid Control > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output.	A
   DTCs are output	B

Result: 

A 

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [08/2020 - 12/2021] 

Result: 

B 

INSPECT HYBRID CONTROL SYSTEM 

for NICKEL METAL HYDRIDE BATTERY: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [02/2019 - ]

for LITHIUM-ION BATTERY: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2020 - ]