HYBRID CONTROL SYSTEM, Diagnostic DTC:P3000-388

DTC Code DTC Name
P3000-388 Battery Control System

DESCRIPTION

The hybrid vehicle control ECU alerts the driver and performs fail-safe control based on error signals received from the battery voltage sensor. 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 system.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

P3000-388

Battery Control System

Discharging prohibited

Discharging of the HV battery continues even after discharging is prohibited when the hybrid system is malfunctioning and "State of Charge (All Bat)" has reached the lower limit.

(1 trip detection logic)

  • SFI system

  • Fuel level

  • HV battery

Does not come on

Master Warning Light:

Does not come on
Table 1. Related Data List

DTC No.

Data List

P3000-388

  • State of Charge (All Bat)

  • Discharge Control Value

  • Power Resource IB

  • DC Inhibit Time

CAUTION / NOTICE / HINT

Tip:

  • If the vehicle is left with the shift lever in N (parked or stopped) for a long time, the battery cannot be charged. In this case, the SOC may drop below the lower limit and DTC P3000-388 may be stored. (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 hybrid system to start (READY-on state).

  • After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.

    1. Turn the power switch on (READY) with the shift lever in P and decrease the SOC. While the battery is being discharged, check that the engine starts to charge the battery, and "State of Charge (All Bat)" increases and remains in the appropriate range.

PROCEDURE

  1. 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.

      Powertrain > Hybrid Control > Trouble Codes

      Result

      Proceed to

      P3000-388 or P3000-389 only is output.

      DTCs other than P3000-388 and P3000-389 are also output.

    5. Turn the power switch off.

    DTCs other than P3000-388 and P3000-389 are also output.

    GO TO DTC CHART (HYBRID CONTROL SYSTEM)

    Click hereClick hereClick here

    P3000-388 or P3000-389 only is output.

  2. 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.

      Powertrain > Engine and ECT > Trouble Codes

      Result

      Proceed to

      No DTCs are output.

      DTCs are output.

    5. Turn the power switch off.

    DTCs are output.

    GO TO DTC CHART (SFI SYSTEM)

    w/ EGR System:Click here

    w/o EGR System:Click here

    w/ Canister Pump Module:Click here

    No DTCs are output.

  3. 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

      Proceed to

      Proper amount of fuel is in the tank.

      There is no fuel in the tank.
      Tip:

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

    3. Turn the power switch off.

    There is no fuel in the tank.

    REFUEL VEHICLE

    Proper amount of fuel is in the tank.

  4. 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.

      Powertrain > Hybrid Control > Trouble Codes

      Powertrain > Hybrid Control

      Tester Display

      Shift Sensor Shift Pos
      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.

      Result

      Proceed to

      NEXT

    5. Turn the power switch off.

    NEXT

  5. 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

      Proceed to

      The engine starts.

      The engine does not start.

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

    The engine starts.

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

    The engine does not start.

  6. CLEAR DTC

    Click here

    Result

    Proceed to

    NEXT
    NEXT

    CHARGE HV BATTERY (CHECK THAT ENGINE STARTS)

    Click hereClick here