LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 136 (Hybrid Battery System (For Lithium-Ion Battery) - Diagnostic Codes (2 Of 3)) >> HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY) >> DTC P0C30-00: Hybrid/EV Battery State of Charge High [08/2020 - ] >> Procedure

DTC P0C30-00: Hybrid/EV Battery State of Charge High [08/2020 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, and 2021 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL) 
    1. Connect the Techstream 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 

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      "P0C30-00" only is output. A
      DTCs except "P0C30-00" of hybrid battery system are output. B
      DTCs except "P0C30-00" of hybrid control system are output. C
    5. Turn the power switch off.

    Result: 

    B 

    GO TO DTC CHART (HYBRID BATTERY SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2020 - ] 

    Result: 

    C 

    GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2020 - 08/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2021 - ] 

    Result: 

    A 

    See step  2

  2. CHECK FREEZE FRAME DATA (HV BATTERY) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / HV Battery / Trouble Codes.
    4. Read the freeze frame data of DTC P0C30-00.

      Powertrain > HV Battery > Trouble Codes 

      Result

      Result Proceed to
      OFF is displayed for "Ready Signal", "SMRP Control Status", "SMRB Control Status" and "SMRG Control Status" and -0.5 A or less is displayed for "Hybrid/EV Battery Current". A
      Other than above B

      HINT: 

      As the power switch on (IG) state may cause the DTC to be stored, freeze frame data is used to judge the cause of the DTC output.

    5. Turn the power switch off.

    Result: 

    B 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    A 

    See step  3

  3. INSPECT HV BATTERY JUNCTION BLOCK ASSEMBLY (SMRP, SMRB, SMRG) 
    WARNING:

    Be sure to wear insulated gloves.

    1. Check that the service plug grip is not installed.
      NOTE:

      After removing the service plug grip, do not turn the power switch on (IG), unless instructed by the appropriate service information because this may cause a malfunction.

    2. Remove the No. 1 HV battery cover panel RH.

      Refer to PROCEDURE - Step 9 [08/2020 - 08/2021] , or refer to PROCEDURE - Step 9 [08/2021 - 09/2022] , or refer to PROCEDURE - Step 9 [09/2022 - ]

    3. Disconnect the high voltage cable connectors from the HV battery junction block assembly.
      NOTE:

      Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.

    4. Measure the resistance according to the value(s) in the table below.
      GTY948290Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (HV Battery Junction Block Assembly)      		 - -

      Standard Resistance (SMRB)

      Tester Connection Condition Specified Condition
      a2-1 (CBI) - y18-1 (+) Power switch off 10 kΩ or higher
    5. Measure the resistance according to the value(s) in the table below.
      GTY948289Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (HV Battery Junction Block Assembly)      		 - -

      Standard Resistance (SMRG, SMRP)

      Tester Connection Condition Specified Condition
      a3-1 (CEI) - y12-1 (-) Power switch off 10 kΩ or higher
    6. Reconnect the high voltage cable connectors to the HV battery junction block assembly.
    7. Install the No. 1 HV battery cover panel RH.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    OK 

    See step  4

  4. PERFORM INITIALIZATION (CURRENT SENSOR OFFSET LEARNING) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (READY).
    3. Perform a road test.
      NOTE:

      Accelerate/decelerate gently. Avoid rapid acceleration/deceleration.

    4. Enter the following menus: Powertrain / HV Battery / Data List / Hybrid/EV Battery Current
    5. Drive the vehicle with the value of Data List item "Hybrid/EV Battery Current" between -50 A to 50 A.

      Powertrain > HV Battery > Data List 

      Tester Display
      Hybrid/EV Battery Current

      HINT: 

      Distance and driving time are not specified.

    6. Turn the power switch off and leave the vehicle for 30 seconds or more.
    7. Turn the power switch on (IG).
    8. Enter the following menus: Powertrain / HV Battery / Data List / Hybrid/EV Battery Current
    9. Check that the value of "Hybrid/EV Battery Current" is between - 0.5 A and 0.5 A with the power switch on (IG).

      Powertrain > HV Battery > Data List 

      Tester Display
      Hybrid/EV Battery Current
      NOTE:
      • If the value is outside the specified range, perform the road test again.
      • This DTC may be output if Current Sensor Offset Learning has not been completed.

      HINT: 

      • If the power switch is on (IG) and value of "Hybrid/EV Battery Current" is between - 0.5 A and 0.5 A, current sensor offset learning has been completed.
      • Even if the current sensor offset learning is not complete, the current sensor value will be corrected by repeating the road test a maximum of 7 times.
    10. Turn the power switch off.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    END 

scientia non olet · About LEMON Manuals