Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001N35K
Model Year Start: 2021 Model: Corolla Prod Date Range: [04/2020 - 09/2022]
Title: HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY with P610): P300000; Hybrid/EV Battery Discharge Control Malfunction; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]

DTC

P300000

Hybrid/EV Battery Discharge Control Malfunction

DESCRIPTION

The battery ECU assembly alerts the driver and performs fail-safe control based on malfunction signals. If the SOC drops due to running out of fuel, the vehicle being left with shift lever in N for a long time or a hybrid control system malfunction, this DTC will be stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

P300000

Hybrid/EV Battery Discharge Control Malfunction

Discharging of the HV battery continues even after discharging is prohibited when the "SOC" has reached the lower limit.

(1 trip detection logic)
  • SFI system
  • Fuel level
  • HV battery state of charge

Does not come on

Master Warning:

Does not come on

Related Data List

DTC No.

Data List

P300000
  • Hybrid/EV Battery SOC
  • Hybrid/EV Battery Current
  • Shift Position
  • WOUT Control Limit Power

CONFIRMATION DRIVING PATTERN

HINT:

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

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY with P610): UTILITY

  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG) and turn the Techstream 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 Techstream on.
  6. Turn the power switch on (READY) with shift lever in P and cause the "Hybrid/EV Battery SOC" to decrease. Check that the engine is started to charge the HV battery, and the value of Data List item "Hybrid/EV Battery SOC" increases and then remains within an appropriate range.
  7. Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
  8. Check the DTC judgment result.

    HINT:

    • 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

HINT:

  • If the vehicle is left with shift lever in N (parked or stopped) for a long time, the battery cannot be charged. In this case, the SOC may drop below the lower limit and DTC P300000 may be stored. (This is not a system malfunction.)
  • When the engine cannot be started, DTC P300000 may be stored because the HV battery cannot be charged.
  • Repeated engine start checks may cause the SOC to drop, resulting in DTC P300000 being stored. In this case, charge the HV battery using the THS charger.
  • Cranking the engine once causes the SOC to drop approximately 1%.
  • Charging the HV battery once (10 minutes) using the THS charger restores the SOC approximately 2%.
  • Charging the HV battery using the THS charger takes approximately 10 minutes when the battery temperature is 25°C (77°F) or approximately 30 minutes when the battery temperature is 0°C (32°F).
  • The THS charger is a supplemental charging device that enables the hybrid system to start (READY-on state).
  • If the result of this inspection is to charge the HV battery, clear the DTCs and then charge the HV battery using the THS charger.

PROCEDURE

1.

CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Powertrain / HV Battery and Hybrid Control / Trouble Codes.

(d) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Powertrain > Hybrid Control > Trouble Codes

Result

Proceed to

"P300000 or P300016" only is output.

A

DTCs except "P300000 or P300016" of hybrid battery system are output.

B

DTCs except "P300000 or P300016" of hybrid control system are output.

C

(e) Turn the power switch off.

B

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

C

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

A

2.

CHECK DTC OUTPUT (ENGINE)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Powertrain / Engine / Trouble Codes.

(d) Check for DTCs.

Powertrain > Engine > Trouble Codes

Result

Proceed to

No DTCs are output.

A

DTCs are output.

B

(e) Turn the power switch off.

B

GO TO DTC CHART (SFI SYSTEM)

A

3.

CHECK AMOUNT OF FUEL

(a) Turn the power switch on (IG).

(b) Check the amount of fuel by referring to the fuel gauge in the meter.

Result

Proceed to

Proper amount of fuel is in the tank.

A

There is no fuel in the tank.

B

HINT:

Add fuel until the low fuel level warning light turns off.

(c) Turn the power switch off.

B

REFUEL VEHICLE
A

4.

CHECK FREEZE FRAME DATA (HV BATTERY)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Powertrain / HV Battery / Trouble Codes.

(d) Read the freeze frame data item "Shift Position" of DTC P300000.

Powertrain > HV Battery > Trouble Codes

Powertrain > HV Battery

Tester Display

Shift Position

NOTICE:

  • When the freeze frame data "Shift Position" was N, DTC P300000 may be stored due to the vehicle was left with shift lever in N and the HV battery could not be charged.
  • If DTC "P300000" only is output, charge the HV battery without replacing the HV battery if necessary.

(e) Turn the power switch off.

NEXT

5.

CHECK ENGINE START

(a) Turn the power switch on (READY).

(b) Check if the engine starts.

HINT:

  • Depressing the accelerator pedal with shift lever in P will cause the engine to start.
  • Turning the power switch on (READY) and off repeatedly while the SOC is low may cause the SOC to drop further, resulting in DTC P300016 being stored. Charge the HV battery using the THS charger as necessary.
  • Cranking the engine once causes the SOC to drop approximately 1%.
  • Charging the HV battery once (10 minutes) using the THS charger restores the SOC approximately 2%.

Result

Proceed to

The engine starts.

A

The engine does not start.

B

(c) If the engine does not start, turn the power switch off.

A

LEAVE VEHICLE WITH SHIFT LEVER IN P, AND CHARGE HV BATTERY BY IDLING UNTIL IDLING STOPS
B

6.

CLEAR DTC (HV BATTERY)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Powertrain / HV Battery / Clear DTCs.

(d) Clear the DTCs and freeze frame data.

Powertrain > HV Battery > Clear DTCs

(e) Perform a road test.

NEXT

CHARGE HV BATTERY

(a) Charge the HV battery using the ths charger, then check that engine starts.