CHARGING SYSTEM(w/ Battery Current Sensor), Diagnostic DTC:P0516, P0517

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

DESCRIPTION

B006PM8E08
*a Resistance (kΩ)

The battery temperature sensor built into the battery current sensor assembly 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 temperature 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. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0516 Battery Temperature Sensor Circuit Low

Battery temperature sensor output value is less than 0.2 V for 0.5 seconds or more with the engine switch on (IG)

(1 trip detection logic)

  • Battery current sensor assembly (battery temperature sensor)

  • Wire harness or connector

  • ECM

 Does not come on DTC stored
P0517 Battery Temperature Sensor Circuit High

Battery temperature sensor output value is higher than 4.8 V for 0.5 seconds or more with the engine switch on (IG)

(1 trip detection logic)

  • Battery current sensor assembly (battery temperature sensor)

  • Wire harness or connector

  • ECM

 Does not come on DTC stored

WIRING DIAGRAM

B006NCME01
*a Battery Current Sensor
*b Battery Temperature Sensor
*c Battery Current Sensor Assembly

PROCEDURE


  1. INSPECT BATTERY CURRENT SENSOR ASSEMBLY


    1. Inspect the battery current sensor assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE BATTERY CURRENT SENSOR ASSEMBLY Click here

    OK

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


    1. Disconnect the D73 ECM connector.

    2. Disconnect the A2 battery current sensor assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D73-95 (THB) - A2-1 (THB) Always Below 1 Ω
      D73-110 (VV1-) - A2-4 (E2) Always Below 1 Ω
      D73-95 (THB) or A2-1 (THB) - Body ground and other terminals Always 10 kΩ or higher
      D73-110 (VV1-) or A2-4 (E2) - Body ground and other terminals Always 10 kΩ or higher
      D73-111 (VCV1) or A2-2 (VC5) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR