Engine - Coolant Temperature Sensor/Switch: Service and Repair

REMOVAL
WATER TEMPERATURE GAUGE UNIT AND SENSOR
1. Drain the cooling water to the bottom level of the gauge unit.
2. After disconnecting the battery ground cable, disconnect engine harness.





3. Remove the water temperature gauge unit and sensor.

INSPECTION
ENGINE COOLANT HOSE/PIPES
Check that there are cracks, damages, or blockage on the water hose and pipe, and replace if necessary.

WATER TEMPERATURE GAUGE UNIT AND SENSOR





1. Water temperature gauge unit
1. Heat up the water temperature gauge by immersing it in hot water.
2. Check if the resistance is within the specified range.





2. Water temperature sensor
1. Immerse the sensor in hot water.
2. Check if the resistance is within the specified range.

INSTALLATION
ENGINE COOLANT HOSE/PIPES





After inserting O-ring into a groove at the lower part of water inlet pipe, soak O-ring in water and insert it into the water inlet pipe.

CAUTION:
^ Be careful not to smear oil or grease on the water pipe O-ring.
^ Pay attention not to let a foreign object get into the connecting part of the water pipe.
^ Insert the water pipe up to its end part.

WATER TEMPERATURE GAUGE UNIT AND SENSOR





1. Smear the sealant on thread and then tighten it to the specified torque.
2. Connect the harness to water temperature gauge unit and cable.
3. Connect the battery ground cable.
4. Refill the coolant.