P0517

P310 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P0516-769: Battery Temperature Sensor Circuit Low

DTC P0516-769 - Battery Temperature Sensor Circuit Low

DTC P0517-770 - Battery Temperature Sensor Circuit High

DESCRIPTION
- The battery thermometer sensor detects the battery temperature. With this signal, the HV control ECU reduces the charge current when the battery temperature is high to protect the battery.





WIRING DIAGRAM





INSPECTION PROCEDURE
HINT: Use the Techstream to read the freeze frame data and information. Part of the engine running conditions at the time of the malfunction is recorded as freeze frame data and information. This information is useful when troubleshooting the malfunction. (Engine speed, engine load, engine coolant temperature, engine output demand value, ambient temperature, auxiliary battery voltage, intake air temperature, elapsed time after turning the ignition switch on, and other information)

PROCEDURE

1. INSPECT BATTERY THERMOMETER SENSOR
(a) Resistance check





(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





HINT: The auxiliary battery must be removed to inspect the battery thermometer sensor. Record DTCs, freeze frame data, and other information before removing the auxiliary battery.

NG -- REPLACE BATTERY THERMOMETER SENSOR
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (HV CONTROL ECU - BATTERY THERMOMETER SENSOR)
(a) Turn the ignition switch off.





(b) Disconnect the H29 and H32 connectors from the HV control ECU.
(c) Disconnect the B19 battery thermometer sensor connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for open):






Standard Resistance (Check for short):






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE HYBRID VEHICLE CONTROL ECU