DTC P0516-769: Battery Temperature Sensor Circuit Low; DTC P0517-770: Battery Temperature Sensor Circuit High: Description
WARNING: This page is about a different variant/trim than selected.
- The thermistor assembly (battery temperature sensor) detects the auxiliary battery temperature. The resistance of the thermistor assembly built into the thermistor changes in accordance with changes in the auxiliary battery temperature. The lower the auxiliary battery temperature, the higher the thermistor assembly resistance. Conversely, the higher the temperature, the lower the resistance. The thermistor is connected to the hybrid vehicle control ECU. A voltage of 5 V is supplied to the thermistor assembly from the THB terminal of the hybrid vehicle control ECU through its internal resistor R. This means that resistor R and the thermistor assembly are connected in series. The voltage at the THB terminal and the resistance value change in accordance with changes in the auxiliary battery temperature. Based on this signal, the hybrid vehicle control ECU reduces the charging current when the auxiliary battery temperature is high to protect the auxiliary battery.
| DTC No. | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| P0516 | 769 | Malfunction in the thermistor assembly (battery temperature sensor) circuit (short to GND) |
|
| P0517 | 770 | Malfunction in the thermistor assembly (battery temperature sensor) circuit (open or short to +B) |