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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 113 (Hybrid Control System (2WD) - Diagnostic Codes (6 Of 7)) >> HYBRID CONTROL SYSTEM (for 2WD) >> DTC P3000-16: Hybrid/EV Battery Control System Circuit Voltage Below Threshold [12/2019 - 11/2023] >> Procedure

DTC P3000-16: Hybrid/EV Battery Control System Circuit Voltage Below Threshold [12/2019 - 11/2023]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC OUTPUT (HYBRID CONTROL) 
    1. Check for DTCs.

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      P3000-16 or P3000-00 only is output. A
      DTCs other than P3000-16 or P3000-00 are also output. B

      HINT: 

      If the HV battery voltage has dropped due to a malfunction in other components such as the inverter with converter assembly or the hybrid vehicle transaxle assembly, recharge the HV battery and then repair the malfunctioning part.

    2. Turn the ignition switch off.

    Result: 

    B 

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) 

    Refer to DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 09/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [09/2020 - 10/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [10/2021 - 11/2023]

    Result: 

    A 

    See step  2

  2. CHECK DTC OUTPUT (ENGINE) 
    1. Check for DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      No DTCs are output. A
      DTCs are output. B
    2. Turn the ignition switch off.

    Result: 

    B 

    GO TO DTC CHART (SFI SYSTEM) 

    Refer to DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 09/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [09/2020 - 10/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [10/2021 - 10/2022] , or refer to DIAGNOSTIC TROUBLE CODE CHART [10/2022 - 11/2023]

    Result: 

    A 

    See step  3

  3. CHECK ENGINE START 
    1. Turn the ignition switch to ON (READY).
    2. Check if the engine starts.
      NOTE:

      Do not turn the ignition switch to ON (READY) repeatedly after duplicating the problem symptom indicated by DTC P3000-16 and clearing the DTCs. This may cause another problem to occur.

      HINT: 

      Depressing the accelerator pedal with shift lever in P will cause the engine to start.

      Result

      Result Proceed to
      The engine does not start. A
      The engine starts. B
    3. Turn the ignition switch off.

    Result: 

    B 

    LEAVE VEHICLE WITH SHIFT LEVER IN P, AND CHARGE HV BATTERY BY IDLING UNTIL IDLING STOPS 

    Result: 

    A 

    See step  4

  4. CHECK CRANKSHAFT PULLEY REVOLUTION (P POSITION) 
    1. Make sure that the shift lever is in P position.
    2. Lift up the vehicle.
    3. Turn the crankshaft pulley using hand tools to check if the crankshaft can rotate smoothly.
      WARNING:

      Do not turn the ignition switch to ON (READY) while performing this inspection. Be sure to turn the ignition switch off before performing this inspection, to prevent the engine from starting.

      NOTE:

      Engine compression causes resistance when turning the crankshaft pulley. Check if the crankshaft rotates smoothly (or if it is locked) by manually applying sufficient torque to turn the crankshaft pulley. The torque required to turn the crankshaft pulley should be the same as for a known good vehicle of the same type.

      Result

      Result Proceed to
      The crankshaft rotates smoothly. A
      The crankshaft does not rotate smoothly. B
    4. Lower the vehicle.

    Result: 

    B 

    See step  6

    Result: 

    A 

    See step  5

  5. CHECK HV BATTERY 
    1. Turn the ignition switch off.
    2. Wait 10 minutes or more.
    3. Read the Data List.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Hybrid Battery Block 1 Voltage
      Hybrid Battery Block 2 Voltage
      Hybrid Battery Block 3 Voltage
      Hybrid Battery Block 4 Voltage
      Hybrid Battery Block 5 Voltage
      Hybrid Battery Block 6 Voltage
      Hybrid Battery Block 7 Voltage
      Hybrid Battery Block 8 Voltage
      Hybrid Battery Block 9 Voltage
      Hybrid Battery Block 10 Voltage
      Hybrid Battery Block 11 Voltage
      Hybrid Battery Block 12 Voltage

      Result

      Result Proceed to
      Any of "Hybrid Battery Block 1, 2, 11, 12 Voltage" is 12.0 V or less, or any of "Hybrid Battery Block 3, 4, 5, 6, 7, 8, 9, 10 Voltage" is 24.0 V or less A
      Other than above B
    4. Turn the ignition switch off.

    Result: 

    A 

    REPLACE HV BATTERY 

    Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]

    Result: 

    B 

    See step  10

  6. CHECK CRANKSHAFT PULLEY REVOLUTION (N POSITION) 
    1. Lift up the vehicle.
    2. Turn the ignition switch to ON.
    3. Depress the brake pedal and move the shift lever to N.
    4. Turn the crankshaft pulley using hand tools to check if the crankshaft can rotate smoothly.
      WARNING:

      Do not turn the ignition switch to ON (READY) while performing this inspection. Be sure to turn the ignition switch to ON before performing this inspection, to prevent the engine from starting.

      NOTE:

      Engine compression causes resistance when turning the crankshaft pulley. Check if the crankshaft rotates smoothly (or if it is locked) by manually applying sufficient torque to turn the crankshaft pulley. The torque required to turn the crankshaft pulley should be the same as for a known good vehicle of the same type.

      Result

      Result Proceed to
      The crankshaft does not rotate smoothly. A
      The crankshaft rotates smoothly. B
    5. Lower the vehicle.
    6. Turn the ignition switch off.

    Result: 

    B 

    See step  11

    Result: 

    A 

    See step  7

  7. REPAIR OR REPLACE ENGINE 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  8

  8. CHECK ENGINE START 
    1. Turn the ignition switch to ON (READY).
    2. Check if the engine starts.
      NOTE:

      Do not turn the ignition switch to ON (READY) repeatedly after duplicating the problem symptom indicated by DTC P3000-16 and clearing the DTCs. This may cause another problem to occur.

      HINT: 

      Depressing the accelerator pedal with shift lever in P will cause the engine to start.

      Result

      Result Proceed to
      The engine does not start. A
      The engine starts. B
    3. Turn the ignition switch off.

    Result: 

    B 

    LEAVE VEHICLE WITH SHIFT LEVER IN P, AND CHARGE HV BATTERY BY IDLING UNTIL IDLING STOPS 

    Result: 

    A 

    See step  9

  9. CHECK HV BATTERY 
    1. Turn the ignition switch off.
    2. Wait 10 minutes or more.
    3. Read the Data List.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Hybrid Battery Block 1 Voltage
      Hybrid Battery Block 2 Voltage
      Hybrid Battery Block 3 Voltage
      Hybrid Battery Block 4 Voltage
      Hybrid Battery Block 5 Voltage
      Hybrid Battery Block 6 Voltage
      Hybrid Battery Block 7 Voltage
      Hybrid Battery Block 8 Voltage
      Hybrid Battery Block 9 Voltage
      Hybrid Battery Block 10 Voltage
      Hybrid Battery Block 11 Voltage
      Hybrid Battery Block 12 Voltage

      Result

      Result Proceed to
      Any of "Hybrid Battery Block 1, 2, 11, 12 Voltage" is 12.0 V or less, or any of "Hybrid Battery Block 3, 4, 5, 6, 7, 8, 9, 10 Voltage" is 24.0 V or less A
      Other than above B
    4. Turn the ignition switch off.

    Result: 

    A 

    REPLACE HV BATTERY 

    Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]

    Result: 

    B 

    See step  14

  10. CLEAR DTC 
    1. Read and record the DTCs and Freeze Frame Data.

      Powertrain > Hybrid Control > Trouble Codes 

    2. Clear the DTCs and Freeze Frame Data.

      Powertrain > Hybrid Control > Clear DTCs 

    3. Turn the ignition switch off and wait for 2 minutes or more.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    CHARGE HV BATTERY (ABOUT 10 MINUTES) 

    Refer to CHARGING [12/2019 - 10/2022] , or refer to CHARGING [10/2022 - 11/2023]

  11. REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY 

    Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  12

  12. CHECK ENGINE START 
    1. Turn the ignition switch to ON (READY).
    2. Check if the engine starts.
      NOTE:

      Do not turn the ignition switch to ON (READY) repeatedly after duplicating the problem symptom indicated by DTC P3000-16 and clearing the DTCs. This may cause another problem to occur.

      HINT: 

      Depressing the accelerator pedal with shift lever in P will cause the engine to start.

      Result

      Result Proceed to
      The engine does not start. A
      The engine starts. B
    3. Turn the ignition switch off.

    Result: 

    B 

    LEAVE VEHICLE WITH SHIFT LEVER IN P, AND CHARGE HV BATTERY BY IDLING UNTIL IDLING STOPS 

    Result: 

    A 

    See step  13

  13. CHECK HV BATTERY 
    1. Turn the ignition switch off.
    2. Wait 10 minutes or more.
    3. Read the Data List.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Hybrid Battery Block 1 Voltage
      Hybrid Battery Block 2 Voltage
      Hybrid Battery Block 3 Voltage
      Hybrid Battery Block 4 Voltage
      Hybrid Battery Block 5 Voltage
      Hybrid Battery Block 6 Voltage
      Hybrid Battery Block 7 Voltage
      Hybrid Battery Block 8 Voltage
      Hybrid Battery Block 9 Voltage
      Hybrid Battery Block 10 Voltage
      Hybrid Battery Block 11 Voltage
      Hybrid Battery Block 12 Voltage

      Result

      Result Proceed to
      Any of "Hybrid Battery Block 1, 2, 11, 12 Voltage" is 12.0 V or less, or any of "Hybrid Battery Block 3, 4, 5, 6, 7, 8, 9, 10 Voltage" is 24.0 V or less A
      Other than above B
    4. Turn the ignition switch off.

    Result: 

    A 

    REPLACE HV BATTERY 

    Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]

    Result: 

    B 

    See step  15

  14. CLEAR DTC 
    1. Read and record the DTCs and Freeze Frame Data.

      Powertrain > Hybrid Control > Trouble Codes 

    2. Clear the DTCs and Freeze Frame Data.

      Powertrain > Hybrid Control > Clear DTCs 

    3. Turn the ignition switch off and wait for 2 minutes or more.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    CHARGE HV BATTERY (ABOUT 10 MINUTES) 

    Refer to CHARGING [12/2019 - 10/2022] , or refer to CHARGING [10/2022 - 11/2023]

  15. CLEAR DTC 
    1. Read and record the DTCs and Freeze Frame Data.

      Powertrain > Hybrid Control > Trouble Codes 

    2. Clear the DTCs and Freeze Frame Data.

      Powertrain > Hybrid Control > Clear DTCs 

    3. Turn the ignition switch off and wait for 2 minutes or more.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    CHARGE HV BATTERY (ABOUT 10 MINUTES) 

    Refer to CHARGING [12/2019 - 10/2022] , or refer to CHARGING [10/2022 - 11/2023]

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