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Home >> Lexus >> 2025 >> NX 350h >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Battery System - Diagnostic Codes (2 Of 2) & Circuit Tests >> Hybrid Battery System >> DTC P0E2D-00: Hybrid/EV Battery Energy Control Module Hybrid/EV Battery Monitor Performance [11/2021 - ] >> Procedure

DTC P0E2D-00: Hybrid/EV Battery Energy Control Module Hybrid/EV Battery Monitor Performance [11/2021 - ]: Procedure

  1. CHECK DTC OUTPUT (HV BATTERY) 
    1. Check for DTCs.

      Powertrain > HV Battery > Trouble Codes 

      Result

      Result Proceed to
      "P0E2D-00" 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
      System Relevant DTC
      Hybrid battery system P1A00-1C Hybrid Battery Stack 2 Cell Voltage Detection Voltage Out of Range
      P1A05-1C Hybrid Battery Stack 3 Cell Voltage Detection Voltage Out of Range
      P1A0A-1C Hybrid Battery Stack 4 Cell Voltage Detection Voltage Out of Range
      P1AC4-13 Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open
      P1AC4-9E Hybrid/EV Battery Stack 1 Current Interrupt Device Stuck On
      P1AC5-13 Hybrid/EV Battery Stack 2 Current Interrupt Device Circuit Open
      P1AC5-9E Hybrid/EV Battery Stack 2 Current Interrupt Device Stuck On
      P1AC6-13 Hybrid/EV Battery Stack 3 Current Interrupt Device Circuit Open
      P1AC6-9E Hybrid/EV Battery Stack 3 Current Interrupt Device Stuck On
      P1AC7-13 Hybrid/EV Battery Stack 4 Current Interrupt Device Circuit Open
      P1AC7-9E Hybrid/EV Battery Stack 4 Current Interrupt Device Stuck On
      P301A-1C Hybrid Battery Stack 1 Cell Voltage Detection Voltage Out of Range
    2. Turn the ignition switch off.

    Result: 

    B 

    GO TO DTC CHART (HYBRID BATTERY SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2021 - ] 

    Result: 

    A 

    See step  2

  2. CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY CONNECTOR) 
    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 ignition switch to ON (READY), unless instructed by the repair information because this may cause a malfunction.

    2. Check the connector connections and contact pressure of the relevant terminals for the battery ECU assembly.

      Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [11/2021 - ]

      GTY1066028Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

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

      Result

      Result Proceed to
      OK A
      Not connected securely The terminals are not damaged or corroded B
      Either connector z10 was not connected securely The terminals are damaged or corroded C
      Either connector z13 was not connected securely The terminals are damaged or corroded D

    Result: 

    B 

    CONNECT SECURELY 

    Result: 

    C 

    REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result: 

    D 

    REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result: 

    A 

    See step  3

  3. CHECK FREEZE FRAME DATA (HYBRID/EV BATTERY CELL VOLTAGE) 
    1. Read the value of freeze frame data items "Hybrid/EV Battery Cell 1 Voltage" through "Hybrid/EV Battery Cell 70 Voltage" for DTC P0E2D-00 and make a note if the value of any is 1.6 V or less.

      Powertrain > HV Battery > Trouble Codes 

      Result

      Result Proceed to
      The value of any of the freeze frame data items "Hybrid/EV Battery Cell 1 Voltage" through "Hybrid/EV Battery Cell 35 Voltage" is 1.6 V or less. A
      The value of any of the freeze frame data items "Hybrid/EV Battery Cell 36 Voltage" through "Hybrid/EV Battery Cell 70 Voltage" is 1.6 V or less. B
      Other than above C
    2. Turn the ignition switch off.

    Result: 

    B 

    See step  7

    Result: 

    C 

    See step  10

    Result: 

    A 

    See step  4

  4. CHECK NO. 1 HV SUPPLY STACK SUB-ASSEMBLY (HV BATTERY CELL VOLTAGE) 
    WARNING:
    • Be sure to wear insulated gloves and protective goggles.
    • Disconnect only the connector corresponding to the HV battery cell to be checked. Do not disconnect the other connectors.
    NOTE:

    Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of each HV battery cell.

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

      After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair information because this may cause a malfunction.

    2. Disconnect the battery ECU assembly connector.
      GTY1066419Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the voltage according to the value(s) in the table below.

      HINT: 

      Measure the voltage of the HV battery cells whose value in the freeze frame data was 1.6 V or less only.

      GTY1052312Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Battery ECU Assembly)      		 - -
      HV Battery Cell Tester Connection Condition
      1 z13-1 (GA0) - z13-13 (VA1) Always
      2 z13-13 (VA1) - z13-25 (VA2) Always
      3 z13-25 (VA2) - z13-2 (VA3) Always
      4 z13-2 (VA3) - z13-14 (VA4) Always
      5 z13-14 (VA4) - z13-26 (VA5) Always
      6 z13-26 (VA5) - z13-3 (VA6) Always
      7 z13-3 (VA6) - z13-15 (VA7) Always
      8 z13-15 (VA7) - z13-27 (VA8) Always
      9 z13-27 (VA8) - z13-4 (VA9) Always
      10 z13-4 (VA9) - z13-16 (VA10) Always
      11 z13-16 (VA10) - z13-28 (VA11) Always
      12 z13-28 (VA11) - z13-5 (VA12) Always
      13 z13-5 (VA12) - z13-17 (VA13) Always
      14 z13-17 (VA13) - z13-29 (VA14) Always
      15 z13-29 (VA14) - z13-6 (VA15) Always
      16 z13-6 (VA15) - z13-18 (VA16) Always
      17 z13-18 (VA16) - z13-30 (VA17) Always
      18 z13-30 (VA17) - z13-7 (VA18) Always
      19 z13-7 (VA18) - z13-19 (VA19) Always
      20 z13-19 (VA19) - z13-31 (VA20) Always
      21 z13-31 (VA20) - z13-8 (VA21) Always
      22 z13-8 (VA21) - z13-20 (VA22) Always
      23 z13-20 (VA22) - z13-32 (VA23) Always
      24 z13-32 (VA23) - z13-9 (VA24) Always
      25 z13-9 (VA24) - z13-21 (VA25) Always
      26 z13-21 (VA25) - z13-33 (VA26) Always
      27 z13-33 (VA26) - z13-10 (VA27) Always
      28 z13-10 (VA27) - z13-22 (VA28) Always
      29 z13-22 (VA28) - z13-34 (VA29) Always
      30 z13-34 (VA29) - z13-11 (VA30) Always
      31 z13-11 (VA30) - z13-23 (VA31) Always
      32 z13-23 (VA31) - z13-35 (VA32) Always
      33 z13-35 (VA32) - z13-12 (VA33) Always
      34 z13-12 (VA33) - z13-24 (VA34) Always
      35 z13-24 (VA34) - z13-36 (VA35) Always
      WARNING:

      Make sure not to cross the electrodes of an electrical tester measurement terminals.

      NOTE:

      Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.

      Result

      Result Proceed to
      The voltage between the terminals is 1.6 V or less. A
      Other than above B
    4. Reconnect the battery ECU assembly connector.

    Result: 

    B 

    REPLACE BATTERY ECU ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result: 

    A 

    See step  5

  5. CHECK BATTERY ECU ASSEMBLY (GA0 - VA35) 
    NOTE:

    Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance.

    1. Remove the battery ECU assembly.

      Refer to REMOVAL [11/2021 - ]

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

      HINT: 

      Only inspect the terminals of the battery ECU assembly which correspond to the HV battery cells which measured 1.6 V or less in the previous step.

      GTY1052431Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Battery ECU Assembly)      		 - -

      Standard Resistance

      HV Battery Cell Tester Connection
      (Tester Probe Polarity)      		 Condition Specified Condition
      1 z13-1 (GA0) (-) - z13-13 (VA1) (+) Always 50 kΩ or more
      2 z13-13 (VA1) (-) - z13-25 (VA2) (+) Always 50 kΩ or more
      3 z13-25 (VA2) (-) - z13-2 (VA3) (+) Always 50 kΩ or more
      4 z13-2 (VA3) (-) - z13-14 (VA4) (+) Always 50 kΩ or more
      5 z13-14 (VA4) (-) - z13-26 (VA5) (+) Always 50 kΩ or more
      6 z13-26 (VA5) (-) - z13-3 (VA6) (+) Always 50 kΩ or more
      7 z13-3 (VA6) (-) - z13-15 (VA7) (+) Always 50 kΩ or more
      8 z13-15 (VA7) (-) - z13-27 (VA8) (+) Always 50 kΩ or more
      9 z13-27 (VA8) (-) - z13-4 (VA9) (+) Always 50 kΩ or more
      10 z13-4 (VA9) (-) - z13-16 (VA10) (+) Always 50 kΩ or more
      11 z13-16 (VA10) (-) - z13-28 (VA11) (+) Always 50 kΩ or more
      12 z13-28 (VA11) (-) - z13-5 (VA12) (+) Always 50 kΩ or more
      13 z13-5 (VA12) (-) - z13-17 (VA13) (+) Always 50 kΩ or more
      14 z13-17 (VA13) (-) - z13-29 (VA14) (+) Always 50 kΩ or more
      15 z13-29 (VA14) (-) - z13-6 (VA15) (+) Always 50 kΩ or more
      16 z13-6 (VA15) (-) - z13-18 (VA16) (+) Always 50 kΩ or more
      17 z13-18 (VA16) (-) - z13-30 (VA17) (+) Always 50 kΩ or more
      18 z13-30 (VA17) (-) - z13-7 (VA18) (+) Always 50 kΩ or more
      19 z13-7 (VA18) (-) - z13-19 (VA19) (+) Always 50 kΩ or more
      20 z13-19 (VA19) (-) - z13-31 (VA20) (+) Always 50 kΩ or more
      21 z13-31 (VA20) (-) - z13-8 (VA21) (+) Always 50 kΩ or more
      22 z13-8 (VA21) (-) - z13-20 (VA22) (+) Always 50 kΩ or more
      23 z13-20 (VA22) (-) - z13-32 (VA23) (+) Always 50 kΩ or more
      24 z13-32 (VA23) (-) - z13-9 (VA24) (+) Always 50 kΩ or more
      25 z13-9 (VA24) (-) - z13-21 (VA25) (+) Always 50 kΩ or more
      26 z13-21 (VA25) (-) - z13-33 (VA26) (+) Always 50 kΩ or more
      27 z13-33 (VA26) (-) - z13-10 (VA27) (+) Always 50 kΩ or more
      28 z13-10 (VA27) (-) - z13-22 (VA28) (+) Always 50 kΩ or more
      29 z13-22 (VA28) (-) - z13-34 (VA29) (+) Always 50 kΩ or more
      30 z13-34 (VA29) (-) - z13-11 (VA30) (+) Always 50 kΩ or more
      31 z13-11 (VA30) (-) - z13-23 (VA31) (+) Always 50 kΩ or more
      32 z13-23 (VA31) (-) - z13-35 (VA32) (+) Always 50 kΩ or more
      33 z13-35 (VA32) (-) - z13-12 (VA33) (+) Always 50 kΩ or more
      34 z13-12 (VA33) (-) - z13-24 (VA34) (+) Always 50 kΩ or more
      35 z13-24 (VA34) (-) - z13-36 (VA35) (+) Always 50 kΩ or more
      NOTE:
      • Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.
      • Read the resistance after the value has stabilized.
      • In order to avoid damaging the terminals of the battery ECU assembly, make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance of the battery ECU assembly.
    3. Install the battery ECU assembly.

      Result

      Result Proceed to
      The voltage between the terminals is 50 kΩ or more. A
      Other than above B

    Result: 

    A 

    REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result: 

    B 

    See step  6

  6. REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    REPLACE BATTERY ECU ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

  7. CHECK NO. 2 HV SUPPLY STACK SUB-ASSEMBLY (HV BATTERY CELL VOLTAGE) 
    WARNING:
    • Be sure to wear insulated gloves and protective goggles.
    • Disconnect only the connector corresponding to the HV battery cell to be checked. Do not disconnect the other connectors.
    NOTE:

    Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of each HV battery cell.

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

      After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair information because this may cause a malfunction.

    2. Disconnect the battery ECU assembly connector.
      GTY1066556Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the voltage according to the value(s) in the table below.

      HINT: 

      Measure the voltage of the HV battery cells whose value in the freeze frame data was 1.6 V or less only.

      GTY1052488Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Battery ECU Assembly)      		 - -
      HV Battery Cell Tester Connection Condition
      36 z10-1 (VAD) - z10-13 (VA36) Always
      37 z10-13 (VA36) - z10-25 (VA37) Always
      38 z10-25 (VA37) - z10-2 (VA38) Always
      39 z10-2 (VA38) - z10-14 (VA39) Always
      40 z10-14 (VA39) - z10-26 (VA40) Always
      41 z10-26 (VA40) - z10-3 (VA41) Always
      42 z10-3 (VA41) - z10-15 (VA42) Always
      43 z10-15 (VA42) - z10-27 (VA43) Always
      44 z10-27 (VA43) - z10-4 (VA44) Always
      45 z10-4 (VA44) - z10-16 (VA45) Always
      46 z10-16 (VA45) - z10-28 (VA46) Always
      47 z10-28 (VA46) - z10-5 (VA47) Always
      48 z10-5 (VA47) - z10-17 (VA48) Always
      49 z10-17 (VA48) - z10-29 (VA49) Always
      50 z10-29 (VA49) - z10-6 (VA50) Always
      51 z10-6 (VA50) - z10-18 (VA51) Always
      52 z10-18 (VA51) - z10-30 (VA52) Always
      53 z10-30 (VA52) - z10-7 (VA53) Always
      54 z10-7 (VA53) - z10-19 (VA54) Always
      55 z10-19 (VA54) - z10-31 (VA55) Always
      56 z10-31 (VA55) - z10-8 (VA56) Always
      57 z10-8 (VA56) - z10-20 (VA57) Always
      58 z10-20 (VA57) - z10-32 (VA58) Always
      59 z10-32 (VA58) - z10-9 (VA59) Always
      60 z10-9 (VA59) - z10-21 (VA60) Always
      61 z10-21 (VA60) - z10-33 (VA61) Always
      62 z10-33 (VA61) - z10-10 (VA62) Always
      63 z10-10 (VA62) - z10-22 (VA63) Always
      64 z10-22 (VA63) - z10-34 (VA64) Always
      65 z10-34 (VA64) - z10-11 (VA65) Always
      66 z10-11 (VA65) - z10-23 (VA66) Always
      67 z10-23 (VA66) - z10-35 (VA67) Always
      68 z10-35 (VA67) - z10-12 (VA68) Always
      69 z10-12 (VA68) - z10-24 (VA69) Always
      70 z10-24 (VA69) - z10-36 (VA70) Always
      WARNING:

      Make sure not to cross the electrodes of an electrical tester measurement terminals.

      NOTE:

      Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.

      Result

      Result Proceed to
      The voltage between the terminals is 1.6 V or less. A
      Other than above B
    4. Reconnect the battery ECU assembly connector.

    Result: 

    B 

    REPLACE BATTERY ECU ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result: 

    A 

    See step  8

  8. CHECK BATTERY ECU ASSEMBLY (VAD - VA70) 
    NOTE:

    Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance.

    1. Remove the battery ECU assembly.

      Refer to REMOVAL [11/2021 - ]

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

      HINT: 

      Only inspect the terminals of the battery ECU assembly which correspond to the HV battery cells which measured 1.6 V or less in the previous step.

      GTY1052503Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Battery ECU Assembly)      		 - -

      Standard Resistance

      HV Battery Cell Tester Connection
      (Tester Probe Polarity)      		 Condition Specified Condition
      36 z10-1 (VAD) (-) - z10-13 (VA36) (+) Always 50 kΩ or more
      37 z10-13 (VA36) (-) - z10-25 (VA37) (+) Always 50 kΩ or more
      38 z10-25 (VA37) (-) - z10-2 (VA38) (+) Always 50 kΩ or more
      39 z10-2 (VA38) (-) - z10-14 (VA39) (+) Always 50 kΩ or more
      40 z10-14 (VA39) (-) - z10-26 (VA40) (+) Always 50 kΩ or more
      41 z10-26 (VA40) (-) - z10-3 (VA41) (+) Always 50 kΩ or more
      42 z10-3 (VA41) (-) - z10-15 (VA42) (+) Always 50 kΩ or more
      43 z10-15 (VA42) (-) - z10-27 (VA43) (+) Always 50 kΩ or more
      44 z10-27 (VA43) (-) - z10-4 (VA44) (+) Always 50 kΩ or more
      45 z10-4 (VA44) (-) - z10-16 (VA45) (+) Always 50 kΩ or more
      46 z10-16 (VA45) (-) - z10-28 (VA46) (+) Always 50 kΩ or more
      47 z10-28 (VA46) (-) - z10-5 (VA47) (+) Always 50 kΩ or more
      48 z10-5 (VA47) (-) - z10-17 (VA48) (+) Always 50 kΩ or more
      49 z10-17 (VA48) (-) - z10-29 (VA49) (+) Always 50 kΩ or more
      50 z10-29 (VA49) (-) - z10-6 (VA50) (+) Always 50 kΩ or more
      51 z10-6 (VA50) (-) - z10-18 (VA51) (+) Always 50 kΩ or more
      52 z10-18 (VA51) (-) - z10-30 (VA52) (+) Always 50 kΩ or more
      53 z10-30 (VA52) (-) - z10-7 (VA53) (+) Always 50 kΩ or more
      54 z10-7 (VA53) (-) - z10-19 (VA54) (+) Always 50 kΩ or more
      55 z10-19 (VA54) (-) - z10-31 (VA55) (+) Always 50 kΩ or more
      56 z10-31 (VA55) (-) - z10-8 (VA56) (+) Always 50 kΩ or more
      57 z10-8 (VA56) (-) - z10-20 (VA57) (+) Always 50 kΩ or more
      58 z10-20 (VA57) (-) - z10-32 (VA58) (+) Always 50 kΩ or more
      59 z10-32 (VA58) (-) - z10-9 (VA59) (+) Always 50 kΩ or more
      60 z10-9 (VA59) (-) - z10-21 (VA60) (+) Always 50 kΩ or more
      61 z10-21 (VA60) (-) - z10-33 (VA61) (+) Always 50 kΩ or more
      62 z10-33 (VA61) (-) - z10-10 (VA62) (+) Always 50 kΩ or more
      63 z10-10 (VA62) (-) - z10-22 (VA63) (+) Always 50 kΩ or more
      64 z10-22 (VA63) (-) - z10-34 (VA64) (+) Always 50 kΩ or more
      65 z10-34 (VA64) (-) - z10-11 (VA65) (+) Always 50 kΩ or more
      66 z10-11 (VA65) (-) - z10-23 (VA66) (+) Always 50 kΩ or more
      67 z10-23 (VA66) (-) - z10-35 (VA67) (+) Always 50 kΩ or more
      68 z10-35 (VA67) (-) - z10-12 (VA68) (+) Always 50 kΩ or more
      69 z10-12 (VA68) (-) - z10-24 (VA69) (+) Always 50 kΩ or more
      70 z10-24 (VA69) (-) - z10-36 (VA70) (+) Always 50 kΩ or more
      NOTE:
      • Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.
      • Read the resistance after the value has stabilized.
      • In order to avoid damaging the terminals of the battery ECU assembly, make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance of the battery ECU assembly.
    3. Install the battery ECU assembly.

      Result

      Result Proceed to
      The voltage between the terminals is 50 kΩ or more. A
      Other than above B

    Result: 

    A 

    REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result: 

    B 

    See step  9

  9. REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    REPLACE BATTERY ECU ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

  10. CLEAR DTC (HV BATTERY) 
    1. Clear the DTCs and freeze frame data.

      Powertrain > HV Battery > Clear DTCs 

    2. Turn the ignition switch off.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  11

  11. CHECK DTC OUTPUT (HV BATTERY) 
    1. Turn the ignition switch to ON and wait for 1 minute or more.
    2. Check for DTCs.

      Powertrain > HV Battery > Trouble Codes 

      Result

      Result Proceed to
      "P0E2D-00" is output. A
      "P0E2D-00" is not output. B
    3. Turn the ignition switch off.

    Result: 

    B 

    REPLACE BATTERY ECU ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result: 

    A 

    See step  12

  12. SIMULATION TEST 
    NOTE:

    Do not turn the ignition switch off while performing this inspection.

    1. With the vehicle stopped and the shift position in P, turn the ignition switch to ON and wait for at least 70 seconds.
    2. Turn the ignition switch to ON (READY) and without depressing the accelerator pedal, and while depressing the brake pedal, change the shift position to D and wait for 1 minute. (Step A)
    3. Drive the vehicle 0.5 m (1.6 ft.) forward and perform step A.
    4. Drive the vehicle another 0.5 m (1.6 ft.) forward and perform step A. Repeat this procedure 5 times (minimum total driving distance: 2 m (6.6 ft.)).
    5. Check if DTCs are output.

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      "P0AA6-49" is not output. A
      "P0AA6-49" is output. B
    6. Turn the ignition switch off.

    Result: 

    B 

    GO TO DTC CHART (P0AA6-49) 

    Refer to DTC P0AA6-49: Hybrid/EV Battery Voltage System Isolation Internal Electronic Failure; DTC P1C7C-49: Hybrid/EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure; DTC P1C7D-49: Hybrid/EV Battery Voltage System Isolation (Hybrid/EV Battery Area) Internal Electronic Failure; DTC P1C7E-49: Hybrid/EV Battery Voltage System Isolation (Transaxle Area) Internal Electronic Failure; DTC P1C7F-49: Hybrid/EV Battery Voltage System Isolation (Direct Current Area) Internal Electronic Failure; DTC P1C80-49: Hybrid/EV Battery Voltage System Isolation (Rear Motor Area) Internal Electronic Failure [11/2021 - 03/2024] , or refer to DTC P0AA6-49: Hybrid/EV Battery Voltage System Isolation Internal Electronic Failure; DTC P1C7C-49: Hybrid/EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure; DTC P1C7D-49: Hybrid/EV Battery Voltage System Isolation (Hybrid/EV Battery Area) Internal Electronic Failure; DTC P1C7E-49: Hybrid/EV Battery Voltage System Isolation (Transaxle Area) Internal Electronic Failure; DTC P1C7F-49: Hybrid/EV Battery Voltage System Isolation (Direct Current Area) Internal Electronic Failure; DTC P1C80-49: Hybrid/EV Battery Voltage System Isolation (Rear Motor Area) Internal Electronic Failure [03/2024 - 12/2024] , or refer to DTC P0AA6-49: Hybrid/EV Battery Voltage System Isolation Internal Electronic Failure; DTC P1C7C-49: Hybrid/EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure; DTC P1C7D-49: Hybrid/EV Battery Voltage System Isolation (Hybrid/EV Battery Area) Internal Electronic Failure; DTC P1C7E-49: Hybrid/EV Battery Voltage System Isolation (Transaxle Area) Internal Electronic Failure; DTC P1C7F-49: Hybrid/EV Battery Voltage System Isolation (Direct Current Area) Internal Electronic Failure; DTC P1C80-49: Hybrid/EV Battery Voltage System Isolation (Rear Motor Area) Internal Electronic Failure [12/2024 - ]

    Result: 

    A 

    See step  13

  13. CHECK DTC OUTPUT (HV BATTERY) 
    1. Check for DTCs.

      Powertrain > HV Battery > Trouble Codes 

      Result

      Result Proceed to
      "P0E2D-00" is not output. A
      "P0E2D-00" is output. B
    2. Turn the ignition switch off.

    Result: 

    A 

    See step  15

    Result: 

    B 

    See step  14

  14. CHECK INVERTER WITH CONVERTER ASSEMBLY 
    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 ignition switch to ON (READY), unless instructed by the repair information because this may cause a malfunction.

    2. Disconnect the motor cable from the inverter with converter assembly.

      HINT: 

      Make sure that no foreign matter, coolant or water enters the inverter with converter assembly.

      GTY1074348Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using a megohmmeter set to 500 V, measure the resistance according to the value(s) in the table below.
      NOTE:

      Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

      Standard Resistance

      Tester Connection Condition Specified Condition
      High voltage terminal - Body ground Ignition switch off 1 MΩ or higher

      HINT: 

      Perform this inspection with the motor cable disconnected from the inverter with converter assembly.

      GTY1074451Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a High Voltage Terminal
    4. Reconnect the motor cable to the inverter with converter assembly.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE INVERTER WITH CONVERTER ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result: 

    OK 

    See step  15

  15. CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MOTOR CABLE (FOR MG2)) 
    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 ignition switch to ON (READY), unless instructed by the repair information because this may cause a malfunction.

    2. Disconnect the motor cable from the inverter with converter assembly.

      HINT: 

      Make sure that no foreign matter, coolant or water enters the inverter with converter assembly.

      GTY1074348Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Connect the cable to the negative (-) auxiliary battery terminal.
    4. Turn the ignition switch to ON.
      NOTE:

      Turning the ignition switch to ON with the service plug grip removed causes DTCs to be stored. Clear the DTCs after performing this inspection.

    5. Move the shift lever to N and lift the vehicle.
    6. Turn the ignition switch off.
    7. Using a megohmmeter set to 500 V, measure the resistance according to the value(s) in the table below while rotating the front wheels 2 revolutions in the same direction simultaneously.
      NOTE:
      • Carefully perform this inspection as the motor (MG2) may generate current when the front wheels are rotated by hand.
      • Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

      HINT: 

      As the insulation resistance may vary when motor (MG2) rotates, perform this inspection while rotating the front wheels.

      Standard Resistance

      Tester Connection Condition Specified Condition
      k1-2 (U) - Body ground and shield ground Ignition switch off 100 MΩ or higher
      k1-3 (V) - Body ground and shield ground Ignition switch off 100 MΩ or higher
      k1-1 (W) - Body ground and shield ground Ignition switch off 100 MΩ or higher
      GTY1052448Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Shield Ground
      *a Motor Cable (for MG2)
      (Inverter with Converter Assembly Side)
    8. Turn the ignition switch to ON.
    9. Lower the vehicle and move the shift lever to P.
    10. Turn the ignition switch off.
    11. Disconnect the cable from the negative (-) auxiliary battery terminal.
    12. Reconnect the motor cable to the inverter with converter assembly.

      HINT: 

      Make sure that no foreign matter, coolant or water enters the inverter with converter assembly.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  17

    Result: 

    OK 

    See step  16

  16. CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MOTOR CABLE (FOR MG1)) 
    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 ignition switch to ON (READY), unless instructed by the repair information because this may cause a malfunction.

    2. Disconnect the motor cable from the inverter with converter assembly.

      HINT: 

      Make sure that no foreign matter, coolant or water enters the inverter with converter assembly.

      GTY1074348Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Connect the cable to the negative (-) auxiliary battery terminal.
    4. Turn the ignition switch to ON.
      NOTE:

      Turning the ignition switch to ON with the service plug grip removed causes DTCs to be stored. Clear the DTCs after performing this inspection.

    5. Move the shift lever to N and lift the vehicle.
    6. Turn the ignition switch off.
    7. Using a megohmmeter set to 500 V, measure the resistance according to the value(s) in the table below while rotating the front wheels 2 revolutions in the same direction simultaneously.
      NOTE:
      • Carefully perform this inspection as the generator (MG1) may generate current when the front wheels are rotated by hand.
      • Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

      HINT: 

      As the insulation resistance may vary when generator (MG1) rotates, perform this inspection while rotating the front wheels.

      Standard Resistance

      Tester Connection Condition Specified Condition
      k1-5 (U) - Body ground and shield ground Ignition switch off 100 MΩ or higher
      k1-6 (V) - Body ground and shield ground Ignition switch off 100 MΩ or higher
      k1-4 (W) - Body ground and shield ground Ignition switch off 100 MΩ or higher
      GTY1052449Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Shield Ground
      *a Motor Cable (for MG1)
      (Inverter with Converter Assembly Side)
    8. Turn the ignition switch to ON.
    9. Lower the vehicle and move the shift lever to P.
    10. Turn the ignition switch off.
    11. Disconnect the cable from the negative (-) auxiliary battery terminal.
    12. Reconnect the motor cable to the inverter with converter assembly.

      HINT: 

      Make sure that no foreign matter, coolant or water enters the inverter with converter assembly.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE BATTERY ECU ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result: 

    NG 

    See step  18

  17. CHECK MOTOR CABLE (FOR MG2) 
    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 ignition switch to ON (READY), unless instructed by the repair information because this may cause a malfunction.

    2. Remove the motor cable from the hybrid vehicle transaxle assembly.

      Refer to REMOVAL [11/2021 - ]

    3. Using a megohmmeter set to 500 V, measure the resistance according to the value(s) in the table below.
      NOTE:

      Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

      Standard Resistance

      Tester Connection Condition Specified Condition
      k1-2 (U) - Shield ground Ignition switch off 100 MΩ or higher
      k1-3 (V) - Shield ground Ignition switch off 100 MΩ or higher
      k1-1 (W) - Shield ground Ignition switch off 100 MΩ or higher
      GTY1052448Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Shield Ground
      *a Motor Cable (for MG2)
      (Inverter with Converter Assembly Side)
    4. Install the motor cable to the hybrid vehicle transaxle assembly.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY 

    Refer to REMOVAL [11/2021 - 03/2024] , or refer to REMOVAL [03/2024 - ]

    Result: 

    NG 

    REPLACE MOTOR CABLE 

    Refer to REMOVAL [11/2021 - ]

  18. CHECK MOTOR CABLE (FOR MG1) 
    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 ignition switch to ON (READY), unless instructed by the repair information because this may cause a malfunction.

    2. Remove the motor cable from the hybrid vehicle transaxle assembly.

      Refer to REMOVAL [11/2021 - ]

    3. Using a megohmmeter set to 500 V, measure the resistance according to the value(s) in the table below.
      NOTE:

      Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

      Standard Resistance

      Tester Connection Condition Specified Condition
      k1-5 (U) - Shield ground Ignition switch off 100 MΩ or higher
      k1-6 (V) - Shield ground Ignition switch off 100 MΩ or higher
      k1-4 (W) - Shield ground Ignition switch off 100 MΩ or higher
      GTY1052449Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Shield Ground
      *a Motor Cable (for MG1)
      (Inverter with Converter Assembly Side)
    4. Install the motor cable to the hybrid vehicle transaxle assembly.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY 

    Refer to REMOVAL [11/2021 - 03/2024] , or refer to REMOVAL [03/2024 - ]

    Result: 

    NG 

    REPLACE MOTOR CABLE 

    Refer to REMOVAL [11/2021 - ]

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