DTC P0516-769: Battery Temperature Sensor Circuit Low; DTC P0517-770: Battery Temperature Sensor Circuit High: Procedure

NG → CONNECT SECURELY 

OK: Go to next step 

1. Check the connections of the battery thermometer sensor connector.
   Fig 1: Identifying Connection Of M14 Battery Thermometer Sensor Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

   The connectors are connected securely and there are no contact problems.

NG → CONNECT SECURELY 

OK: Go to next step 

1. Disconnect connector M14 from the battery thermometer sensor.
2. Measure the resistance according to the value(s) in the table below.
   Fig 2: Identifying M14 Battery Thermometer Sensor Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M14-1 (THB) - M14-2 (E2)	32°F (0°C)	5.0 to 5.3 kΩ
   	68°F (20°C)	2.3 to 2.5 kΩ
   	104°F (40°C)	1.1 to 1.3 kΩ

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Battery Thermometer Sensor)

3. Connect the battery thermometer sensor connector.

NG → REPLACE BATTERY THERMOMETER SENSOR 

OK: Go to next step 

1. Disconnect connector M14 from the battery thermometer sensor.
2. Disconnect connector A58 from the hybrid vehicle control ECU.
   Fig 3: Identifying M14 From The Battery Thermometer Sensor & A58 From The Hybrid Vehicle Control ECU Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Switch Condition	Specified Condition
   A58-83 (THB) - M14-1 (THB)	Power switch off	Below 1 Ω
   A58-84 (EIB) - M14-2 (E2)	Power switch off	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Switch Condition	Specified Condition
   A58-83 (THB) or M14-1 (THB) - Body ground	Power switch off	10 kΩ or more
   A58-84 (EIB) or M14-2 (E2) - Body ground	Power switch off	10 kΩ or more

4. Turn the power switch on (IG).
5. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A58-83 (THB) or M14-1 (THB) - Body ground	Power switch on (IG)	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Battery Thermometer Sensor)
   *2	Front view of wire harness connector (to Hybrid Vehicle Control ECU)

   NOTE:

   Turning the power switch on (IG) with the hybrid vehicle control ECU connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

6. Turn the power switch off.
7. Connect the battery thermometer sensor connector.
8. Connect the hybrid vehicle control ECU connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Check for intermittent problems. Refer toCHECK FOR INTERMITTENT PROBLEMS .

NG → REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

OK → See step   6