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CHARGING SYSTEM, Diagnostic DTC:P058A01

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DTC Code DTC Name
P058A01 Auxiliary Battery Monitor Module Range/Performance
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DESCRIPTION

The battery state sensor assembly detects the auxiliary voltage, current and temperature of the auxiliary battery. The battery state sensor assembly calculates State of Charge (SOC) based on the voltage and current of the auxiliary battery and sends it to the hybrid vehicle control ECU assembly. Based on the signals received, the hybrid vehicle control ECU assembly adjusts the charging voltage of the DC/DC converter.

The battery state sensor assembly calculates the auxiliary battery temperature based on changes in resistance of a built-in thermistor and sends it to the hybrid vehicle control ECU assembly. The hybrid vehicle control ECU assembly reduces the amount of charging current based on this signal in order to protect the auxiliary battery.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory
P058A01 Auxiliary Battery Monitor Module Range/Performance

Any of the following conditions is met with the power switch on (IG). (1 trip detection logic):


  • Current is 999.939 A or more, or -1000 A or less for 3.2 seconds or more.

  • The difference between the maximum and minimum current is 0.0305 A or less for 100 seconds or more.

  • A current detection circuit malfunction signal is received.

  • The auxiliary battery temperature is 105°C (221°F) or more or -40°C (-40°F) or less for 3.2 seconds or more.

  • A temperature detection circuit malfunction signal is received.

  • Voltage is 15.98 V or more, or 6.0 V or less for 3.2 seconds or more.

  • A voltage detection circuit malfunction signal is received.

  • A writing error occurs in the auxiliary battery state sensor internal memory (battery identification data).

  • Battery state sensor assembly

  • Auxiliary battery

  • Wire harness or connector

 Charge warning light does not come on DTC stored
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

  • Inspect the fuses for circuits related to this system before performing the following procedure.

  • When P162B87 (Lost Communication with Battery Monitor Module Missing Message) is output at the same time, perform troubleshooting for P162B87 (Lost Communication with Battery Monitor Module Missing Message) first.

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PROCEDURE


  1. Click here

    CHECK BATTERY STATE SENSOR ASSEMBLY INSTALLATION CONDITION


    1. Check installation condition of the battery state sensor assembly.

      Result
      Proceed to
      OK
      NG

  2. Click here

    CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)


    1. Check that the battery state sensor assembly connector is securely connected.

      OK
      The connector is securely connected.

    2. Disconnect the P5 battery state sensor assembly connector.

    3. Check the connector case and terminals for deformation or corrosion.

      OK
      No deformation or corrosion.

    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      P5-1 (+B) - Body ground Power switch off 11 to 14 V
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE BATTERY STATE SENSOR ASSEMBLYClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR