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HYBRID CONTROL SYSTEM, Diagnostic DTC:P0AD915

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DTC Code DTC Name
P0AD915 Hybrid/EV Battery Positive Contactor Circuit Short to Auxiliary Battery or Open
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DESCRIPTION

Refer to the description for DTC P0AE411.

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DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0AD915 Hybrid/EV Battery Positive Contactor Circuit Short to Auxiliary Battery or Open

Open or short to +B in the SMRB circuit:

Primary circuit of SMR (+) is malfunctioning.

(2 trip detection logic)

  • Wire harness or connector

  • HV battery junction block assembly

  • Hybrid vehicle control ECU assembly

 Does not come on

Master Warning Light:

Comes on
Table 1. Related Data List
DTC No. Data List
P0AD915

  • 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
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CONFIRMATION DRIVING PATTERN

Tip:

After repairs have been completed, clear the DTCs 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 60 seconds 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.

    Tip:

    • 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, perform driving pattern again.

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WIRING DIAGRAM

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

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CAUTION / NOTICE / HINT

CAUTION:

  • B004STG

    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

  • B004Y5N

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

  • B004SX1

    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.

  • B004W3JC06
    *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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    Tip:

    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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Tip:

If DTC P0AD915 is output, the power switch cannot be turned on (READY).

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PROCEDURE


  1. Click here

    READ VALUE USING GTS (SMRB STATUS)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Data List / SMRB Status.

    4. Read the Data List.


      1. Powertrain > Hybrid Control > Data List
        Tester Display
        SMRB Status




      Standard
      Tester Display Condition Specified Condition
      SMRB Status Power switch on (IG) OFF

    5. Turn the power switch off.

      Result
      Proceed to
      OK
      NG

  2. Click here

    CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR)

    Result
    Proceed to
    OK
    NG

    1. B004W01C01
      *A for LHD
      *B for RHD

      Check the connector connections and contact pressure of the relevant terminals for the hybrid vehicle control ECU assembly connectors.

      Click here

      OK
      The connectors are connected securely and there are no contact pressure problems.
      Result
      Proceed to
      OK
      NG

  3. Click here

    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. B004XXNN01

      Check the connection condition of the LG1 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

    • AClick here
    • B

      CONNECT SECURELY

    • C

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. Click here

    CHECK CONNECTOR CONNECTION CONDITION (NO. 2 HV 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. B004S78E02
      Table 2.
      *1 Le1

      Check the connection condition of the Le1 No. 2 HV 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.

      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

    • AClick here
    • B

      CONNECT SECURELY

    • C

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. Click here

    CHECK CONNECTOR CONNECTION CONDITION (HV BATTERY JUNCTION BLOCK ASSEMBLY CONNECTOR)

    Result
    Proceed to
    OK
    NG
    CAUTION:

    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 (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the No. 10 HV battery shield panel.

      Click here

    3. B004YEV

      Check the connector connections and contact pressure of the relevant terminals of the HV battery junction block assembly connector.

      Click here

      OK
      The connectors are connected securely and there are no contact pressure problems.

    4. Install the No. 10 HV battery shield panel.

      Result
      Proceed to
      OK
      NG

    • OK

      CHECK FOR INTERMITTENT PROBLEMSClick here

    • NG

      CONNECT SECURELY

  6. Click here

    CHECK HARNESS AND CONNECTOR (SMRB VOLTAGE)


    1. Turn the power switch on (IG).

    2. B004U4TC24
      *a

      Component with harness connected

      (Hybrid Vehicle Control ECU Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      G92-5 (SMRB) - Body ground Power switch on (IG) Below 1 V

    3. Turn the power switch off.

      Result
      Proceed to
      OK
      NG

  7. Click here

    CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR)

    Result
    Proceed to
    OK
    NG

    1. B004W01C01
      *A for LHD
      *B for RHD

      Check the connector connections and contact pressure of the relevant terminals for the hybrid vehicle control ECU assembly connectors.

      Click here

      OK
      The connectors are connected securely and there are no contact pressure problems.
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLYClick here

    • NG

      CONNECT SECURELY

  8. Click here

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


    1. B004UX6C30
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)

      Disconnect the G92 hybrid vehicle control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G92-5 (SMRB) - Body ground Power switch off 25.0 to 59.0 Ω

    3. Reconnect the G92 hybrid vehicle control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

  9. Click here

    CHECK HARNESS AND CONNECTOR (SHORT TO POWER SUPPLY WIRES)

    CAUTION:

    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 (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the No. 10 HV battery shield panel.

      Click here

    3. B004YEVN03

      Disconnect the e2 HV battery junction block assembly connector.

    4. Disconnect the G92 hybrid vehicle control ECU assembly connector.

    5. Turn the power switch on (IG).

    6. B004YVGC14
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)
      *b

      Front view of wire harness connector

      (to HV Battery Junction Block Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      G92-5 (SMRB) and e2-1 (SMRB) - Body ground and other terminals Power switch on (IG) Below 1 V
      Note:

      Turning the power switch on (IG) with the hybrid vehicle control ECU assembly connector and the HV battery junction block assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    7. Turn the power switch off.

    8. Reconnect the G92 hybrid vehicle control ECU assembly connector.

    9. Reconnect the e2 HV battery junction block assembly connector.

    10. Install the No. 10 HV battery shield panel.

      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLYClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  10. Click here

    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. B004XXNN01

      Check the connection condition of the LG1 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

    • AClick here
    • B

      CONNECT SECURELY

    • C

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  11. Click here

    CHECK CONNECTOR CONNECTION CONDITION (NO. 2 HV 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. B004S78E02
      Table 3.
      *1 Le1

      Check the connection condition of the Le1 No. 2 HV 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.

      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

    • AClick here
    • B

      CONNECT SECURELY

    • C

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  12. Click here

    CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - HV BATTERY JUNCTION BLOCK ASSEMBLY)

    CAUTION:

    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 (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the No. 10 HV battery shield panel.

      Click here

    3. B004YEVN03

      Disconnect the e2 HV battery junction block assembly connector.

    4. Disconnect the G92 hybrid vehicle control ECU assembly connector.

    5. B004YVGC15
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)
      *b

      Front view of wire harness connector

      (to HV Battery Junction Block Assembly)

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      G92-5 (SMRB) - e2-1 (SMRB) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      G92-5 (SMRB) and e2-1 (SMRB) - Body ground and other terminals Power switch off 10 kΩ or higher

    6. Reconnect the G92 hybrid vehicle control ECU assembly connector.

    7. Reconnect the e2 HV battery junction block assembly connector.

    8. Install the No. 10 HV battery shield panel.

      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  13. Click here

    CHECK HARNESS AND CONNECTOR (HV BATTERY JUNCTION BLOCK ASSEMBLY - BODY GROUND)

    CAUTION:

    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 (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the No. 10 HV battery shield panel.

      Click here

    3. Disconnect the e2 HV battery junction block assembly connector.

    4. B004SX7C05
      *a

      Front view of wire harness connector

      (to HV Battery Junction Block Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      e2-3 (GND) - Body ground Power switch off Below 1 Ω

    5. Reconnect the e2 HV battery junction block assembly connector.

    6. Install the No. 10 HV battery shield panel.

      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  14. Click here

    INSPECT HV BATTERY JUNCTION BLOCK ASSEMBLY (SMRB)

    CAUTION:

    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 (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the No. 10 HV battery shield panel.

      Click here

    3. Disconnect the e2 HV battery junction block assembly connector.

    4. B004YLYC07
      *a

      Component without harness connected

      (HV Battery Junction Block Assembly)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      e2-1 (SMRB) - e2-3 (GND) -40 to 80°C (-40 to 176°F) 25.0 to 59.0 Ω

    5. Reconnect the e2 HV battery junction block assembly connector.

    6. Install the No. 10 HV battery shield panel.

      Result
      Proceed to
      OK
      NG

    • OK

      CHECK FOR INTERMITTENT PROBLEMSClick here

    • NG

      REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLYClick here