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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 140 (Hybrid Control System (For Lithium-Ion Battery) - Diagnostic Codes (2 Of 4)) >> HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY) >> DTC P0ABF-00: Hybrid/EV Battery Current Sensor "A" Circuit Range/Performance [08/2020 - ] >> Procedure

DTC P0ABF-00: Hybrid/EV Battery Current Sensor "A" Circuit Range/Performance [08/2020 - ]: Procedure

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  1. CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 HV SUPPLY STACK SUB-ASSEMBLY) 
    WARNING:

    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 information because this may cause a malfunction.

    2. Remove the No. 1 HV battery hose.

      Refer to PROCEDURE - Step 4 [08/2020 - 08/2021] , or refer to PROCEDURE - Step 4 [08/2021 - 09/2022] , or refer to PROCEDURE - Step 4 [09/2022 - ]

    3. Disconnect the A No. 1 HV supply stack sub-assembly connector.
      GTY741623Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Before disconnecting the connector, check that it is not loose or disconnected.

    4. Disconnect the y16 battery ECU assembly connector.
      NOTE:

      Before disconnecting the connector, check that it is not loose or disconnected.

      GTY946854Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Measure the resistance according to the value(s) in the tables below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      y16-24(IB1) - A-2(IB1) Power switch off Below 1 Ω
      y16-23(GIB) - A-10(GIB) Power switch off Below 1 Ω
      y16-12(IB0) - A-11(IB0) Power switch off Below 1 Ω
      y16-36(VIB) - A-1(VIB) Power switch off Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      y16-24(IB1) or A-2(IB1) - Body ground and other terminals Power switch off 10 kΩ or higher
      y16-23(GIB) or A-10(GIB) - Body ground and other terminals Power switch off 10 kΩ or higher
      y16-12(IB0) or A-11(IB0) - Body ground and other terminals Power switch off 10 kΩ or higher
      y16-36(VIB) or A-1(VIB) - Body ground and other terminals Power switch off 10 kΩ or higher
      GTY946944Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Battery ECU Assembly)
      *b Front view of wire harness connector
      (to No. 2 HV Supply Stack Sub-assembly)
    6. Reconnect the y16 battery ECU assembly connector.
    7. Reconnect the A No. 1 HV supply stack sub-assembly connector.
    8. Install the No. 1 HV battery hose.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  9

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (NO. 2 HV SUPPLY STACK SUB-ASSEMBLY - HV BATTERY JUNCTION BLOCK ASSEMBLY) 
    WARNING:

    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 information because this may cause a malfunction.

    2. Remove the No. 1 HV battery hose.

      Refer to PROCEDURE - Step 4 [08/2020 - 08/2021] , or refer to PROCEDURE - Step 4 [08/2021 - 09/2022] , or refer to PROCEDURE - Step 4 [09/2022 - ]

    3. Disconnect the A No. 2 HV supply stack sub-assembly connector.
      GTY774692Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Before disconnecting the connector, check that it is not loose or disconnected.

    4. Disconnect the y14 battery current sensor connector from the HV battery junction block assembly.
      NOTE:

      Before disconnecting the connector, check that it is not loose or disconnected.

      GTY946868Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Measure the resistance according to the value(s) in the tables below.
      GTY947021Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 HV Supply Stack Sub-assembly)
      *b Front view of wire harness connector
      (to HV Battery Junction Block Assembly (Battery Current Sensor))

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      A-2(IB1) - y14-2(IB1) Power switch off Below 1 Ω
      A-10(GIB) - y14-3(GIB) Power switch off Below 1 Ω
      A-11(IB0) - y14-4(IB0) Power switch off Below 1 Ω
      A-1(VIB) - y14-1(VIB) Power switch off Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      A-2(IB1) or y14-2(IB1) - Body ground and other terminals Power switch off 10 kΩ or higher
      A-10(GIB) or y14-3(GIB) - Body ground and other terminals Power switch off 10 kΩ or higher
      A-11(IB0) or y14-4(IB0) - Body ground and other terminals Power switch off 10 kΩ or higher
      A-1(VIB) or y14-1(VIB) - Body ground and other terminals Power switch off 10 kΩ or higher
    6. Reconnect the y14 battery current sensor connector to the HV battery junction block assembly.
    7. Reconnect the A No. 2 HV supply stack sub-assembly connector.
    8. Install the upper No. 1 HV battery hose.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 2 HV SUPPLY STACK SUB-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  3

  3. CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - HV BATTERY JUNCTION BLOCK ASSEMBLY) 
    WARNING:

    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 information because this may cause a malfunction.

    2. Remove the No. 1 HV battery hose.

      Refer to PROCEDURE - Step 4 [08/2020 - 08/2021] , or refer to PROCEDURE - Step 4 [08/2021 - 09/2022] , or refer to PROCEDURE - Step 4 [09/2022 - ]

    3. Disconnect the y16 battery ECU assembly connector.
      NOTE:

      Before disconnecting the connector, check that it is not loose or disconnected.

      GTY946854Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Disconnect the y14 battery current sensor connector from the HV battery junction block assembly.
      NOTE:

      Before disconnecting the connector, check that it is not loose or disconnected.

      GTY946868Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Measure the resistance according to the value(s) in the tables below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      y16-24(IB1) - y14-2(IB1) Power switch off Below 1 Ω
      y16-23(GIB) - y14-3(GIB) Power switch off Below 1 Ω
      y16-12(IB0) - y14-4(IB0) Power switch off Below 1 Ω
      y16-36(VIB) - y14-1(VIB) Power switch off Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      y16-24(IB1) or y14-2(IB1) - Body ground and other terminals Power switch off 10 kΩ or higher
      y16-23(GIB) or y14-3(GIB) - Body ground and other terminals Power switch off 10 kΩ or higher
      y16-12(IB0) or y14-4(IB0) - Body ground and other terminals Power switch off 10 kΩ or higher
      y16-36(VIB) or y14-1(VIB) - Body ground and other terminals Power switch off 10 kΩ or higher
      GTY947002Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Battery ECU Assembly)
      *b Front view of wire harness connector
      (to HV Battery Junction Block Assembly (Battery Current Sensor))
    6. Reconnect the y14 battery current sensor connector to the HV battery junction block assembly.
    7. Reconnect the y16 battery ECU assembly connector.
    8. Install the No. 1 HV battery hose.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  8

    Result: 

    OK 

    See step  4

  4. 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

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  5

  5. CLEAR DTC 

    Refer to PROCEDURE - Step 3

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  6

  6. PERFORM ROAD TEST 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Data List / Hybrid/EV Battery SOC.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Hybrid/EV Battery SOC
    4. Check that "Hybrid/EV Battery SOC" shows 60% or less.

      HINT: 

      If "Hybrid/EV Battery SOC" is 60% or more, reduce it to below 60% by leaving the hybrid system on with shift lever in N.

    5. Apply the parking brake and secure the wheels using chocks.
    6. Turn the power switch on (READY).
    7. Move the shift lever to D while depressing the brake pedal with your left foot and repeat the following steps for 1 minute or more.

      HINT: 

      Depress and release the accelerator pedal in 5-second intervals (2.5 seconds each) continuously.

      1. While depressing the brake pedal with your left foot, depress the accelerator pedal with your right foot.
      2. Release the accelerator pedal.
    8. Turn the power switch off.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  7

  7. CHECK DTC OUTPUT (HYBRID CONTROL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Check for DTCs.

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      P0ABF-00 is not output. A
      P0ABF-00 is output again. B
    5. Turn the power switch off.

    Result: 

    A 

    COMPLETED 

    Result: 

    B 

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

  8. CHECK HARNESS AND CONNECTOR (NO. 2 HV SUPPLY STACK SUB-ASSEMBLY - HV BATTERY JUNCTION BLOCK ASSEMBLY) 
    WARNING:

    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 information because this may cause a malfunction.

    2. Remove the No. 1 HV battery hose.

      Refer to PROCEDURE - Step 4 [08/2020 - 08/2021] , or refer to PROCEDURE - Step 4 [08/2021 - 09/2022] , or refer to PROCEDURE - Step 4 [09/2022 - ]

    3. Disconnect the A No. 1 HV supply stack sub-assembly connector.
      GTY741624Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Before disconnecting the connector, check that it is not loose or disconnected.

    4. Check the terminals of the male side of the A No. 1 HV supply stack sub-assembly connector.

      OK

      The terminals are free of foreign matter and not damaged.

      Result

      Proceed to
      OK
      NG
    5. Reconnect the A No. 1 HV supply stack sub-assembly connector.
    6. Install the upper No. 1 HV battery hose.

    Result: 

    OK 

    REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY. Refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY. Refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

  9. CHECK HARNESS AND CONNECTOR (NO. 2 HV SUPPLY STACK SUB-ASSEMBLY - HV BATTERY JUNCTION BLOCK ASSEMBLY) 
    WARNING:

    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 information because this may cause a malfunction.

    2. Remove the No. 1 HV battery hose.

      Refer to PROCEDURE - Step 4 [08/2020 - 08/2021] , or refer to PROCEDURE - Step 4 [08/2021 - 09/2022] , or refer to PROCEDURE - Step 4 [09/2022 - ]

    3. Disconnect the A No. 1 HV supply stack sub-assembly connector.
      GTY741624Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Before disconnecting the connector, check that it is not loose or disconnected.

    4. Check the terminals of the male side of the A No. 1 HV supply stack sub-assembly connector.

      OK

      The terminals are free of foreign matter and not damaged.

      Result

      Proceed to
      OK
      NG
    5. Reconnect the A No. 1 HV supply stack sub-assembly connector.
    6. Install the upper No. 1 HV battery hose.

    Result: 

    OK 

    REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY. Refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY AND NO. 2 HV SUPPLY STACK SUB-ASSEMBLY. Refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

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