Coolant Temperature Sensor/Switch (For Computer): Service and Repair

Engine Coolant Temperature Sensor:

REMOVAL

CAUTION: The hybrid system uses high voltage circuits, so improper handling could cause an electric shock or leakage. During servicing (e.g. installing or removing the parts, replacing the parts), be sure to follow the procedures below.

1. REMOVE RADIATOR SUPPORT OPENING COVER
2. REMOVE ENGINE UNDER COVER LH
3. REMOVE ENGINE UNDER COVER RH
4. DRAIN ENGINE COOLANT
5. DRAIN HV COOLANT
6. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.

7. REMOVE INVERTER WITH CONVERTER
a. Remove the inverter with converter.

8. REMOVE ENGINE COOLANT TEMPERATURE SENSOR




a. Disconnect the sensor connector.
b. Using a 19 mm deep socket wrench, remove the sensor and gasket.

INSTALLATION

1. INSTALL ENGINE COOLANT TEMPERATURE SENSOR




a. Using a 19 mm deep socket wrench, install a new gasket and the sensor.

Torque: 20 N.m (204 kgf.cm, 15 ft.lbf)

b. Connect the sensor connector.

2. INSTALL INVERTER WITH CONVERTER
a. Install the inverter with converter.

3. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
4. ADD ENGINE COOLANT
5. ADD HV COOLANT
6. CHECK FOR ENGINE COOLANT LEAKS
7. CHECK FOR HV COOLANT LEAKS
8. INSTALL ENGINE UNDER COVER RH
9. INSTALL ENGINE UNDER COVER LH
10. INSTALL RADIATOR SUPPORT OPENING COVER
11. PERFORM INITIALIZATION
a. Perform initialization.

NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.