HYBRID CONTROL SYSTEM, Diagnostic DTC:P300016

DTC Code DTC Name
P300016 Hybrid/EV Battery Control System Circuit Voltage Below Threshold

DESCRIPTION

The hybrid vehicle control ECU alerts the driver and performs fail-safe control based on error signals received from the battery voltage sensor.

This DTC is stored if the HV battery is discharged excessively or the hybrid control system malfunctions.

Tech Tips

If the HV battery voltage has dropped due to a malfunction in other components such as the inverter with converter assembly or the hybrid vehicle transaxle assembly, recharging the HV battery will be able to restore the voltage. If the HV battery voltage has dropped excessively after the vehicle was left for a long time, the HV battery will need to be replaced.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P300016 Hybrid/EV Battery Control System Circuit Voltage Below Threshold

Malfunction is received from the battery voltage sensor:

Voltage of a battery block drops drastically.

(1 trip detection logic)

  • Engine

  • Hybrid vehicle transaxle assembly

  • HV battery

 Does not come on

Master Warning Light:

Comes on
Related Data List
DTC No. Data List
P300016

  • Hybrid Battery Block 1 to 9 Voltage

  • Hybrid Battery SOC

  • Hybrid Battery Voltage

  • Hybrid Battery Current

  • Engine Speed

CONFIRMATION DRIVING PATTERN

Tech Tips

After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click here


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off and wait for 2 minutes or more.

  5. Turn the power switch on (IG) and turn the GTS on.

  6. Turn the power switch on (READY) with park (P) selected.

  7. Wait until the engine starts and then stops.

  8. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.

  9. Check the DTC judgment result.

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.

CAUTION / NOTICE / HINT

CAUTION:

When disposing of an HV battery, make sure to return it through an authorized collection agent who is capable of handling it safely. If the HV battery is returned via the manufacturer specified route, it will be returned properly and in a safe manner by an authorized collection agent.

Tech Tips


  • Thoroughly interview the customer as DTC P300016 may be stored if the SOC drops due to the vehicle being left with neutral (N) selected for a long time or running out of fuel.

  • When the engine cannot be started, DTC P300016 may be stored because the HV battery cannot be charged.

PROCEDURE


  1. CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    4. Check for DTCs.


      Powertrain > Hybrid Control > Trouble Codes
      Result
      Result Proceed to
      Only P300000 or P300016 is output A
      Other than above B

      Tech Tips

      If the HV battery voltage has dropped due to a malfunction in other components such as the inverter with converter assembly or the hybrid vehicle transaxle assembly, recharge the HV battery and then repair the malfunctioning part.

    5. Turn the power switch off.


    B

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here

    A

  2. CHECK DTC OUTPUT (ENGINE)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Engine / Trouble Codes.


      Powertrain > Engine > Trouble Codes

    4. Check for DTCs.

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

    5. Turn the power switch off.


    B

    GO TO DTC CHART (SFI SYSTEM) w/ Canister Pump Module: Click here
    GO TO DTC CHART (SFI SYSTEM) w/o Canister Pump Module: Click here

    A

  3. CHECK ENGINE START


    1. Turn the power switch on (READY).

    2. Check if the engine starts.

      Note

      Do not turn the power switch on (READY) repeatedly after duplicating the problem symptom indicated by DTC P300016 and clearing the DTCs. This may cause another problem to occur.

      Tech Tips

      Depressing the accelerator pedal with park (P) selected will cause the engine to start.

      Result
      Result Proceed to
      The engine does not start. A
      The engine starts. B

    3. Turn the power switch off.


    B

    LEAVE VEHICLE WITH PARK (P) SELECTED, AND CHARGE HV BATTERY BY IDLING UNTIL IDLING STOPS

    A

  4. CHECK CRANKSHAFT PULLEY REVOLUTION (P POSITION)


    1. Push the P position switch (transmission shift main switch) to select park (P).

    2. Lift up the vehicle.

    3. Turn the crankshaft pulley using hand tools to check if the crankshaft can rotate smoothly.

      CAUTION:

      Do not turn the power switch on (READY) while performing this inspection. Be sure to turn the power switch off before performing this inspection, to prevent the engine from starting.

      Note

      Engine compression causes resistance when turning the crankshaft pulley. Check if the crankshaft rotates smoothly (or if it is locked) by manually applying sufficient torque to turn the crankshaft pulley. The torque required to turn the crankshaft pulley should be the same as for a known good vehicle of the same type.

      Result
      Result Proceed to
      The crankshaft rotates smoothly. A
      The crankshaft does not rotate smoothly. B

    4. Lower the vehicle.


    B

    CHECK CRANKSHAFT PULLEY REVOLUTION (N POSITION) Click here

    A

  5. CHECK HV BATTERY


    1. Turn the power switch off.

    2. Wait 10 minutes or more.

    3. Connect the GTS to the DLC3.

    4. Turn the power switch on (IG).

    5. Enter the following menus: Powertrain / Hybrid Control / Data List / Hybrid Battery Block 1 to 9 Voltage.


      Powertrain > Hybrid Control > Data List
      Tester Display
      Hybrid Battery Block 1 Voltage
      Hybrid Battery Block 2 Voltage
      Hybrid Battery Block 3 Voltage
      Hybrid Battery Block 4 Voltage
      Hybrid Battery Block 5 Voltage
      Hybrid Battery Block 6 Voltage
      Hybrid Battery Block 7 Voltage
      Hybrid Battery Block 8 Voltage
      Hybrid Battery Block 9 Voltage

    6. Read the Data List.

      Result
      Result Proceed to
      Any of "Hybrid Battery Block 1, 2, 8, 9 Voltage" is 12.0 V or less, or any of "Hybrid Battery Block 3, 4, 5, 6, 7 Voltage" is 24.0 V or less A
      Other than above B

    7. Turn the power switch off.


    A

    REPLACE HV BATTERY Click here

    B

    CLEAR DTC Click here

  6. CHECK CRANKSHAFT PULLEY REVOLUTION (N POSITION)


    1. Lift up the vehicle.

    2. Turn the power switch on (IG).

    3. Depress the brake pedal and move the shift lever to select neutral (N).

    4. Turn the crankshaft pulley using hand tools to check if the crankshaft can rotate smoothly.

      CAUTION:

      Do not turn the power switch on (READY) while performing this inspection. Be sure to turn the power switch on (IG) before performing this inspection, to prevent the engine from starting.

      Note

      Engine compression causes resistance when turning the crankshaft pulley. Check if the crankshaft rotates smoothly (or if it is locked) by manually applying sufficient torque to turn the crankshaft pulley. The torque required to turn the crankshaft pulley should be the same as for a known good vehicle of the same type.

      Result
      Result Proceed to
      The crankshaft does not rotate smoothly. A
      The crankshaft rotates smoothly. B

    5. Lower the vehicle.

    6. Turn the power switch off.


    B

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Click here

    A

  7. REPAIR OR REPLACE ENGINE

    Result
    Proceed to
    NEXT

    NEXT

  8. CHECK ENGINE START


    1. Turn the power switch on (READY).

    2. Check if the engine starts.

      Note

      Do not turn the power switch on (READY) repeatedly after duplicating the problem symptom indicated by DTC P300016 and clearing the DTCs. This may cause another problem to occur.

      Tech Tips

      Depressing the accelerator pedal with park (P) selected will cause the engine to start.

      Result
      Result Proceed to
      The engine does not start. A
      The engine starts. B

    3. Turn the power switch off.


    B

    LEAVE VEHICLE WITH PARK (P) SELECTED, AND CHARGE HV BATTERY BY IDLING UNTIL IDLING STOPS

    A

  9. CHECK HV BATTERY


    1. Turn the power switch off.

    2. Wait 10 minutes or more.

    3. Connect the GTS to the DLC3.

    4. Turn the power switch on (IG).

    5. Enter the following menus: Powertrain / Hybrid Control / Data List / Hybrid Battery Block 1 to 9 Voltage.


      Powertrain > Hybrid Control > Data List
      Tester Display
      Hybrid Battery Block 1 Voltage
      Hybrid Battery Block 2 Voltage
      Hybrid Battery Block 3 Voltage
      Hybrid Battery Block 4 Voltage
      Hybrid Battery Block 5 Voltage
      Hybrid Battery Block 6 Voltage
      Hybrid Battery Block 7 Voltage
      Hybrid Battery Block 8 Voltage
      Hybrid Battery Block 9 Voltage

    6. Read the Data List.

      Result
      Result Proceed to
      Any of "Hybrid Battery Block 1, 2, 8, 9 Voltage" is 12.0 V or less, or any of "Hybrid Battery Block 3, 4, 5, 6, 7 Voltage" is 24.0 V or less A
      Other than above B

    7. Turn the power switch off.


    A

    REPLACE HV BATTERY Click here

    B

    CLEAR DTC Click here

  10. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    4. Clear the DTCs.


      Powertrain > Hybrid Control > Clear DTCs

    5. Turn the power switch off.

      Result
      Proceed to
      NEXT

    NEXT

    CHARGE HV BATTERY (ABOUT 10 MINUTES) Click here

  11. REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY

    Tech Tips

    Click here

    Result
    Proceed to
    NEXT

    NEXT

  12. CHECK ENGINE START


    1. Turn the power switch on (READY).

    2. Check if the engine starts.

      Note

      Do not turn the power switch on (READY) repeatedly after duplicating the problem symptom indicated by DTC P300016 and clearing the DTCs. This may cause another problem to occur.

      Tech Tips

      Depressing the accelerator pedal with park (P) selected will cause the engine to start.

      Result
      Result Proceed to
      The engine does not start. A
      The engine starts. B

    3. Turn the power switch off.


    B

    LEAVE VEHICLE WITH PARK (P) SELECTED, AND CHARGE HV BATTERY BY IDLING UNTIL IDLING STOPS

    A

  13. CHECK HV BATTERY


    1. Turn the power switch off.

    2. Wait 10 minutes or more.

    3. Connect the GTS to the DLC3.

    4. Turn the power switch on (IG).

    5. Enter the following menus: Powertrain / Hybrid Control / Data List / Hybrid Battery Block 1 to 9 Voltage.


      Powertrain > Hybrid Control > Data List
      Tester Display
      Hybrid Battery Block 1 Voltage
      Hybrid Battery Block 2 Voltage
      Hybrid Battery Block 3 Voltage
      Hybrid Battery Block 4 Voltage
      Hybrid Battery Block 5 Voltage
      Hybrid Battery Block 6 Voltage
      Hybrid Battery Block 7 Voltage
      Hybrid Battery Block 8 Voltage
      Hybrid Battery Block 9 Voltage

    6. Read the Data List.

      Result
      Result Proceed to
      Any of "Hybrid Battery Block 1, 2, 8, 9 Voltage" is 12.0 V or less, or any of "Hybrid Battery Block 3, 4, 5, 6, 7 Voltage" is 24.0 V or less A
      Other than above B

    7. Turn the power switch off.


    A

    REPLACE HV BATTERY Click here

    B

    CLEAR DTC Click here

  14. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    4. Clear the DTCs.


      Powertrain > Hybrid Control > Clear DTCs

    5. Turn the power switch off.

      Result
      Proceed to
      NEXT

    NEXT

    CHARGE HV BATTERY (ABOUT 10 MINUTES) Click here

  15. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    4. Clear the DTCs.


      Powertrain > Hybrid Control > Clear DTCs

    5. Turn the power switch off.

      Result
      Proceed to
      NEXT

    NEXT

    CHARGE HV BATTERY (ABOUT 10 MINUTES) Click here