SFI SYSTEM, Diagnostic DTC:P0516, P0517

DTC Code DTC Name
P0516 Battery Temperature Sensor Circuit Low
P0517 Battery Temperature Sensor Circuit High

DESCRIPTION

B007U3HE01

The battery temperature sensor detects battery temperature.

A thermistor is integrated into the battery temperature sensor, and the resistance in the battery temperature sensor changes according to the battery temperature.

The resistance of the thermistor in the battery temperature sensor decreases as the battery temperature increases. The resistance increases as the temperature decreases.

The battery temperature sensor is connected to the ECM. The ECM supplies 5 V from the THB terminal to the battery temperature sensor through resistor R.

The battery thermometer sensor and resistor R are connected in series. This results in fluctuations in the voltage supplied from the THB terminal when the resistance changes according to the battery temperature.

The ECM determines the battery temperature according to fluctuations in voltage. When the battery temperature is high, the ECM determines to reduce the amount of current supplied from the generator in order to protect the battery.

DTC No. DTC Detection Condition Trouble Area
P0516

Battery temperature sensor output value is 0.2 V or less for 0.5 seconds or more

(1 trip detection logic)

  • Battery temperature sensor

  • Short in battery temperature sensor circuit

  • ECM
P0517

Battery temperature sensor output value is 4.8 V or more for 0.5 seconds or more

(1 trip detection logic)

  • Battery temperature sensor

  • Open in battery temperature sensor circuit

  • ECM

WIRING DIAGRAM

B007PHIE08

INSPECTION PROCEDURE

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PROCEDURE


  1. INSPECT BATTERY TEMPERATURE SENSOR

    B007RDCE01
    Text in Illustration
    *a

    Component without harness connected

    (Battery Temperature Sensor)

    1. Disconnect the battery temperature sensor connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 24 to 26°C (75 to 79°F) 1.91 to 2.05 kΩ

    3. Reconnect the battery temperature sensor connector.


    NG

    REPLACE BATTERY TEMPERATURE SENSOR

    OK

  2. CHECK HARNESS AND CONNECTOR (BATTERY TEMPERATURE SENSOR - ECM)


    1. Disconnect the battery temperature sensor connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      B69-1 - D97-124 (THB) Always Below 1 Ω
      B69-2 - D97-72 (E2) Always Below 1 Ω
      B69-1 or D97-124 (THB) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ECM Click here