Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001A0DR
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 - 08/2020]
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): P0C3000; Hybrid/EV Battery State of Charge High; 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]

DTC

P0C3000

Hybrid/EV Battery State of Charge High

DESCRIPTION

The hybrid vehicle control ECU monitors the system internal operation and will store a DTC and perform fail-safe control if it detects the following malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

P0C3000

Hybrid/EV Battery State of Charge High

Charging prohibited

Charging of the HV battery continues even after charging is prohibited when the hybrid system is malfunctioning and "Hybrid Battery SOC" has reached the upper limit.

(1 trip detection logic)

Hybrid vehicle control ECU

Does not come on

Master Warning Light:

Comes on

Related Data List

DTC No.

Data List

P0C3000
  • Hybrid Battery SOC
  • WIN Control Limit Power
  • Hybrid Battery Current

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 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): 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. Apply the parking brake and secure the wheels using chocks.
  7. Fully apply the parking brake and chock all 4 wheels. Firmly depress the brake pedal, turn the power switch on (READY) and with the shift lever in D. Depress the accelerator pedal to start the engine and increase the engine speed. This will cause the Hybrid Battery SOC to increase.

    If the charge current drops, release the accelerator pedal and then depress it again to maintain charging.

  8. Select "WIN Control Limit Power" in the Data List and check that charging stops when "WIN Control Limit Power" reaches 0 kW.
  9. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
  10. 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.

PROCEDURE

1.

CHECK DTC OUTPUT (HYBRID CONTROL)

(a) Connect the Techstream to the DLC3.

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

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

(d) Check for DTCs.

Powertrain > Hybrid Control > Trouble Codes

Result

Proceed to

P0C3000 only is output.

A

DTCs except P0C3000 are output.

B

(e) Turn the power switch off.

A

REPLACE HYBRID VEHICLE CONTROL ECU

B

GO TO DTC CHART (HYBRID CONTROL SYSTEM)