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HYBRID CONTROL SYSTEM, Diagnostic DTC:P3000-388

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Info Added 2017-08-02

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DTC Code DTC Name
P3000-388 Battery Control System
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DESCRIPTION

The power management control ECU alerts the driver and performs fail-safe control based on error signals received from the battery smart unit. This DTC is stored when the SOC (state of charge) of the HV battery starts to drop as a result of leaving the shift lever in N, running out of fuel, or a malfunction in the hybrid control system.

DTC No. INF Code DTC Detection Condition Trouble Area
P3000 388 Discharge inhibition control malfunction

  • SFI system

  • Fuel level

  • HV battery
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CAUTION / NOTICE / HINT

Tip:

  • If the vehicle is stopped or parked with the shift lever in N for a long time, DTC P3000-388 may be stored because the HV battery cannot be charged. (This is not a system malfunction.)

  • When the engine cannot be started, DTC P3000-388 may be stored because the HV battery cannot be charged.

  • Repeated engine start checks may cause the SOC to drop, resulting in DTC P3000-388 being stored. In this case, charge the HV battery using the THS charger.

  • Cranking the engine once causes the SOC to drop approximately 1%.

  • Charging the HV battery once (10 minutes) using the THS charger restores the SOC approximately 2%.

  • Charging the HV battery using the THS charger takes approximately 10 minutes when the battery temperature is 25°C (77°F) or approximately 30 minutes when the battery temperature is 0°C (32°F).

  • The THS charger is a supplemental charging device that enables the engine to start (READY-on state).

  • If the result of this inspection is to charge the HV battery, clear the DTCs and then charge the HV battery using the THS charger.

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PROCEDURE


  1. Click here

    CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    4. Check for DTCs.

      Result
      Result Proceed to
      P3000-388 or P3000-389 only is output. A
      DTCs except P3000-388, P3000-389, and P0AF8 are also output. B

    5. Turn the power switch off.


  2. Click here

    CHECK DTC OUTPUT (ENGINE AND ECT)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    4. Check for DTCs.

      Result
      Result Proceed to
      NO DTCs are output. A
      DTCs are output. B

    5. Turn the power switch off.


  3. Click here

    CHECK AMOUNT OF FUEL


    1. Turn the power switch on (IG).

    2. Check the amount of fuel by referring to the fuel gauge in the meter.

      Result
      Result Proceed to
      Proper amount of fuel is in the tank. A
      There is no fuel in the tank. B
      Tip:

      Add fuel until the low fuel level warning light turns off.

    3. Turn the power switch off.


  4. Click here

    CHECK FREEZE FRAME DATA


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    4. Read the freeze frame data item "Shift Sensor Shift Pos" of DTC P3000-388.

      Note:

      • When the freeze frame data "Shift Sensor Shift Pos" was N, DTC P3000-388 may be stored due to the vehicle was left with shift lever in N and the HV battery could not be charged.

      • If DTC "P3000-388" only is output, charge the HV battery without replacing the HV battery if necessary.

    5. Turn the power switch off.


  5. Click here

    CHECK ENGINE START


    1. Turn the power switch on (READY).

    2. Check if the engine starts.

      Tip:

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

      • Turning the power switch on (READY) and off repeatedly while the SOC is low may cause the SOC to drop further, resulting in DTC P3000-389 being stored. Charge the HV battery using the THS charger as necessary.

      • Cranking the engine once causes the SOC to drop approximately 1%.

      • Charging the HV battery once (10 minutes) using the THS charger restores the SOC approximately 2%.

      Result
      Result Proceed to
      The engine starts. A
      The engine does not start. B

    3. If the engine does not start, turn the power switch off.


    • A

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

    • BClick here
  6. Click here

    CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    4. Read and record the DTCs and freeze frame data.

    5. Clear the DTCs and freeze frame data.

    6. Turn the power switch off.


    • NEXT

      CHARGE HV BATTERY (CHECK THAT ENGINE STARTS) (Click here)