HYBRID CONTROL SYSTEM, Diagnostic DTC:P0AD911

DTC Code DTC Name
P0AD911 Hybrid/EV Battery Positive Contactor Circuit Short to Ground

DESCRIPTION

Refer to the description for DTC P0AE411.

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DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0AD911 Hybrid/EV Battery Positive Contactor Circuit Short to Ground

Short to ground in the SMRB circuit:

Primary circuit of SMR (+) is malfunctioning.

(2 trip detection logic)

  • Wire harness or connector

  • No. 2 HV battery junction block assembly

  • Hybrid vehicle control ECU

 Does not come on

Master Warning Light:

Comes on
Related Data List
DTC No. Data List
P0AD911

  • VL-Voltage before Boosting

  • VH-Voltage after Boosting

  • Hybrid Battery Voltage

  • SMRP Status

  • SMRB Status

  • SMRG Status

  • SMRP Control Status

  • SMRB Control Status

  • SMRG Control Status

  • Boosting Converter Shutdown Status

  • Generator Inverter Shutdown Status

  • Motor Inverter Shutdown Status

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.

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  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 (READY) and wait for 30 seconds or more.

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

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

  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.

WIRING DIAGRAM

Refer to the wiring diagram for the HV battery high-voltage line circuit.

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CAUTION / NOTICE / HINT

CAUTION:


  • B006HUP

    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

    • Disconnecting the low voltage connector of the electric vehicle charger assembly.

    • Disconnecting the low voltage connector of the solar energy control unit

  • B006IQP

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

  • B006HQC

    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.

  • B006IVPC18
    *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.

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    Tech Tips

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

  • Make sure to insulate the high-voltage connectors and terminals of the HV battery with insulating tape after removing it.

    If the HV battery stored without insulating the connectors and terminals, electric shock or fire may result.

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.

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Tech Tips

If DTC P0AD911 is output, the power switch cannot be turned on (READY).

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - BODY GROUND)


    1. Disconnect the I2 hybrid vehicle control ECU connector.

    2. B006IBMC44
      *a

      Front view of wire harness connector

      (to Hybrid Vehicle Control ECU)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      I2-16 (SMRB) - Body ground Power switch off 20.6 to 40.8 Ω

    3. Reconnect the I2 hybrid vehicle control ECU connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    NG

  2. CHECK CONNECTOR CONNECTION CONDITION (FLOOR WIRE CONNECTOR)

    Result
    Result Proceed to
    OK A
    NG (The connector is not connected securely.) B
    NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C

    1. B006J5FC02
      *A for LHD
      *B for RHD

      Check the connection condition of theNI2 or NI1 floor wire connector and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.

      Click here

      OK
      - The connector is connected securely.
      - The terminals are not deformed and are connected securely.
      - No water or foreign matter in the connector.
      Result
      Result Proceed to
      OK A
      NG (The connector is not connected securely.) B
      NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C

    B

    CONNECT SECURELY

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

  3. CHECK CONNECTOR CONNECTION CONDITION (NO. 1 HYBRID BATTERY PACK WIRE CONNECTOR)

    Result
    Result Proceed to
    OK A
    NG (The connector is not connected securely.) B
    NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C

    1. B006HVRN02
      *1 Nt1

      Check the connection condition of the Nt1 No. 1 hybrid battery pack wire connector and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.

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      OK
      - The connector is connected securely.
      - The terminals are not deformed and are connected securely.
      - No water or foreign matter in the connector.
      Result
      Result Proceed to
      OK A
      NG (The connector is not connected securely.) B
      NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C

    B

    CONNECT SECURELY

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

  4. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - NO. 2 HV BATTERY JUNCTION BLOCK ASSEMBLY)

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


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

      Note

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

    2. Remove the upper hybrid battery cover sub-assembly.

      Click here

    3. B006HEMN07

      Disconnect the t4 No. 2 HV battery junction block assembly connector.

    4. Disconnect the I2 hybrid vehicle control ECU connector.

    5. B006INEC02
      *a

      Front view of wire harness connector

      (to Hybrid Vehicle Control ECU)
      *b

      Front view of wire harness connector

      (to No. 2 HV Battery Junction Block Assembly)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      I2-16 (SMRB) and t4-3 (SMRB) - Body ground and other terminals Power switch off 10 kΩ or higher

    6. Reconnect the I2 hybrid vehicle control ECU connector.

    7. Reconnect the t4 No. 2 HV battery junction block assembly connector.

    8. Install the upper hybrid battery cover sub-assembly.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO. 2 HV BATTERY JUNCTION BLOCK ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR