DTC    P3030    Battery Voltage Detected Line Snapped

for Preparation Click here


DESCRIPTION

  1. Refer to the description for DTC P0A80. (Click here)

DTC No.
DTC Detection Condition
Trouble Area
P3030
Each battery block voltage becomes less than 2.5V (open)
(1 trip detection)
  1. Battery smart unit
  2. HV battery

MONITOR DESCRIPTION

The battery smart unit monitors a voltage of the battery blocks to detect an open in internal battery voltage sensor circuits of the battery smart unit and the wire harness between each battery block and battery smart unit. If the voltage at any of the battery blocks is out of the specified range, the battery smart unit judges that there is an open in the internal sensor circuit(s) or wire harness. The HV control ECU then illuminates the MIL and sets a DTC.

INSPECTION PROCEDURE

CAUTION:
  1. Before inspecting the high-voltage system, take safety precautions to prevent electrical shocks, such as wearing insulated gloves and removing the service plug grip. After removing the service plug grip, put it in your pocket to prevent other technicians from reconnecting it while you are working on the high-voltage system.
  2. After disconnecting the service plug grip, wait for at least 5 minutes before touching any of the high-voltage connectors or terminals.

HINT:
At least 5 minutes is required to discharge the high-voltage capacitor inside the w/ converter inverter assembly.

1.READ OUTPUT DTC (DTC P0A1F IS OUTPUT)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to the ON position.

  1. Select the following menu items: Powertrain / Hybrid Control / DTC.

  1. Read output DTCs. (Click here)

    Result:
    DTC P0A1F is output.



YES
REPLACE BATTERY SMART UNIT
NO


2.CHECK CONNECTOR OF BATTERY SMART UNIT CONNECTOR (LOOSENESS AND POOR CONTACT)

CAUTION:
Be sure to wear insulated gloves and protective goggles.



    A108234E02

  1. Check the connections of the B29 and B30 connectors of the battery smart unit.

    OK:
    Connectors are connected securely and there is no poor connection.



NG
CONNECT SECURELY
OK


3.REPLACE BATTERY SMART UNIT

NEXT


4.CLEAR DTC

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to the ON position.

  1. Select the following menu items: Powertrain / Hybrid Control / DTC / Clear.


NEXT


5.CHECK DTC AGAIN

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to the ON position.

  1. Select the following menu items: Powertrain / Hybrid Control / DTC.

  1. Read output DTCs. (Click here)

    Result:
    DTC P3030 is output.



YES
REPLACE HV BATTERY
NO

RETURNS TO NORMAL OPERATION