HYBRID BATTERY SYSTEM, Diagnostic DTC:P30004B

DTC Code DTC Name
P30004B Hybrid/EV Battery Control System Over Temperature

DESCRIPTION

The battery ECU assembly monitors the temperature of the HV battery to detect if it becomes excessively high.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P30004B Hybrid/EV Battery Control System Over Temperature

The battery ECU assembly detects a HV battery cooling system error signal.

(1 trip detection logic)

  • Hybrid vehicle control ECU assembly

  • No. 1 HV supply stack sub-assembly

  • No. 2 HV supply stack sub-assembly

 Does not come on

Master Warning Light:

Comes on
Related Data List
DTC No. Data List
P30004B

  • Hybrid Battery Temperature 1 to 6

  • Hybrid Battery Cooling Fan Intake Air Temperature 1

  • Ambient Temperature

  • WOUT Control Limit Power

  • WIN Control Limit Power

  • Hybrid Battery SOC

  • Hybrid Battery Cooling Fan 1 Frequency

CONFIRMATION DRIVING PATTERN

Tech Tips

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


  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. Drive the vehicle for approximately 10 minutes according to the freeze frame data items "Vehicle Speed", "Hybrid Battery Temperature 1 to 6", "Hybrid Battery Cooling Fan Intake Air Temperature 1", "Ambient Temperature" and "Hybrid Battery Current".

  7. Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.

  8. 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:


  • B004BJX

    Before the following operations are conducted, take precautions to prevent electric shock by turning the power switch off, wearing insulated gloves, and removing the service plug grip from HV battery.


    • Inspecting the high-voltage system

    • Disconnecting the low voltage connector of the inverter with converter assembly

    • Disconnecting the low voltage connector of the HV battery

  • B004C5R

    To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.

  • B0049VM

    After removing the service plug grip from the HV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.

  • B004AZGC06
    *a Without waiting for 10 minutes

    After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.

    Click here

    Tech Tips

    Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly and the electric vehicle charger assembly.

  • B004AA2C06
    *a Dealer
    *b Battery Collection Agent

    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.


    • Accidents such as electric shock may result if the HV battery is disposed of improperly or abandoned. Therefore, make sure to return all HV batteries through an authorized collection agent.

  • Before returning the HV battery, make sure to perform a recovery inspection.

    Click here

  • Before returning the HV supply stack sub-assembly, make sure to perform a recovery inspection.

    Click here

  • Make a note of the output DTCs as some of them may be necessary for recovery inspection of the HV battery and HV supply stack sub-assemblies.

  • B004CBE

    After removing the HV battery, keep it away from water. Exposure to water may cause the HV battery to produce heat, resulting in a fire.

Note

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

Click here

PROCEDURE


  1. CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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

    4. Check for DTCs.


      Powertrain > HV Battery > Trouble Codes
      Result
      Result Proceed to
      "P30004B" only is output, or DTCs except the ones in the table below are also output. A
      DTCs of hybrid battery system in the table below are output. B
      DTCs of hybrid control system in the table below are output. C
      System Relevant DTC
      Hybrid battery system P060A47 Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
      P060B49 Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
      P060687 Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
      P0A8111 Hybrid/EV Battery Cooling Fan 1 Circuit Short to Ground
      P0A8115 Hybrid/EV Battery Cooling Fan 1 Circuit Short to Auxiliary Battery or Open
      P0A8196 Hybrid/EV Battery Cooling Fan 1 Component Internal Failure
      P0A9B11 Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Ground
      P0A9B15 Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Auxiliary Battery or Open
      P0A9B1C Hybrid/EV Battery Temperature Sensor "A" Voltage Out of Range
      P0A9B2A Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range
      P0AAC11 Hybrid/EV Battery Air Temperature Sensor "A" Circuit Short to Ground
      P0AAC15 Hybrid/EV Battery Air Temperature Sensor "A" Circuit Short to Auxiliary Battery or Open
      P0AC511 Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Ground
      P0AC515 Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Auxiliary Battery or Open
      P0AC51C Hybrid/EV Battery Temperature Sensor "B" Voltage Out of Range
      P0AC52A Hybrid/EV Battery Temperature Sensor "B" Signal Stuck In Range
      P0ACA11 Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Ground
      P0ACA15 Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Auxiliary Battery or Open
      P0ACA1C Hybrid/EV Battery Temperature Sensor "C" Voltage Out of Range
      P0ACA2A Hybrid/EV Battery Temperature Sensor "C" Signal Stuck In Range
      P0AE811 Hybrid/EV Battery Temperature Sensor "D" Circuit Short to Ground
      P0AE815 Hybrid/EV Battery Temperature Sensor "D" Circuit Short to Auxiliary Battery or Open
      P0AE81C Hybrid/EV Battery Temperature Sensor "D" Voltage Out of Range
      P0AE82A Hybrid/EV Battery Temperature Sensor "D" Signal Stuck In Range
      P0BC211 Hybrid/EV Battery Temperature Sensor "E" Circuit Short to Ground
      P0BC215 Hybrid/EV Battery Temperature Sensor "E" Circuit Short to Auxiliary Battery or Open
      P0BC21C Hybrid/EV Battery Temperature Sensor "E" Voltage Out of Range
      P0BC22A Hybrid/EV Battery Temperature Sensor "E" Signal Stuck In Range
      P0C3311 Hybrid/EV Battery Temperature Sensor "F" Circuit Short to Ground
      P0C3315 Hybrid/EV Battery Temperature Sensor "F" Circuit Short to Auxiliary Battery or Open
      P0C331C Hybrid/EV Battery Temperature Sensor "F" Voltage Out of Range
      P0C332A Hybrid/EV Battery Temperature Sensor "F" Signal Stuck In Range
      P306562 Hybrid/EV Battery Temperature Sensor "Group 1" Signal Compare Failure
      P306A62 Hybrid/EV Battery Temperature Sensor "Group 2" Signal Compare Failure
      Hybrid control system P0A1F94 Hybrid/EV Battery Energy Control Module Unexpected Operation

    5. Turn the power switch off.


    B

    GO TO DTC CHART (HYBRID BATTERY SYSTEM) Click here

    C

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here

    A

  2. REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY

    Click here

    Result
    Proceed to
    NEXT

    NEXT

    REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY AND NO. 2 HV SUPPLY STACK SUB-ASSEMBLY Click here