DTC P062F-46: Hybrid/EV Powertrain Control Module EEPROM Calibration / Parameter Memory Failure [12/2019 - 11/2023]: Procedure

1. Read and record the Vehicle Control History (RoB).

   Powertrain > Hybrid Control > Utility 

   Tester Display
   Vehicle Control History (RoB)

   Result

   Result	Proceed to
   Auxiliary Battery Voltage Low (HV) or Auxiliary Battery Voltage Low (Inverter) is stored.	A
   Auxiliary Battery Voltage Low (HV) and Auxiliary Battery Voltage Low (Inverter) are not stored.	B

2. Turn the ignition switch off.

Result: 

B 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

Result: 

A 

See step  2

1. Read the Freeze Frame Data of DTC P062F-46.

   HINT: 

   The value of the Freeze Frame Data item BATT Voltage immediately after the ignition switch is turned to ON may be 16.00 V (15.99 V), however this does not indicate a malfunction.

   1. According to the display on the GTS, read the data of the Freeze Frame Data and make a note of the value of Total Distance Traveled.

      Powertrain > Hybrid Control > Trouble Codes 

2. Read the data recorded in the Vehicle Control History item (Auxiliary Battery Voltage Low (HV) or Auxiliary Battery Voltage Low (Inverter)) which was stored when the auxiliary battery voltage dropped below the threshold.
   1. According to the display on the GTS, read the Vehicle Control History data and make a note of the value of Total Distance Traveled.

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Vehicle Control History (RoB)

3. Compare the values in the Freeze Frame Data and the Vehicle Control History.

   Result

   Result	Proceed to
   The total distance driven is the same.	A
   The total distance driven is not the same.	B

4. Turn the ignition switch off.

Result: 

B 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

Result: 

A 

See step  3

1. Turn the ignition switch off and turn on the high beam headlights for 30 seconds. This will remove the surface charge from the auxiliary battery.
2. Measure the auxiliary battery voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   Positive (+) auxiliary battery terminal - Negative (-) auxiliary battery terminal	20°C (68°F), Ignition switch off	12.0 V or higher

   HINT: 

   This DTC may be stored when the ignition switch is turned off when the auxiliary battery voltage is low. In this case, when the auxiliary battery voltage is no longer low, after the ignition switch is turned to ON and then off several times, the vehicle will be judged as normal and the master warning will turn off.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

See step  5

Result: 

NG 

See step  4

Result

Result: 

NEXT 

See step  5

See step  3

Result

Result: 

NEXT 

See step  6

1. Turn the ignition switch ON and wait for 15 seconds or more.
2. Check if DTCs are output.

   Powertrain > Hybrid Control > Trouble Codes 

   Result

   Result	Proceed to
   P062F-46 is not output.	A
   P062F-46 is output.	B

3. Turn the ignition switch off.

Result: 

A 

END 

Result: 

B 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023]