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

DISASSEMBLY
1. Drain the coolant down to sensor level or below.
2. Disconnect the battery ground cable and disconnect the engine harness connector from the sender & sensor.
3. Remove the sender & sensor

Coolant Temperature Sensor Inspection



1. Heat the sensor by submerging it in hot engine coolant.
2. Check that the resistance is within the specified range.

Resistance:
At 20°C (68°F): 2.21 - 2.69 K Ohms
At 80°C (176°F) 264 - 328 Ohms

REASSEMBLY



1. Apply sealant to the threaded portion and tighten to the specified torque.

Coolant temperature sensor: 15 - 20 Nm (150 - 20 kg.cm, 11 - 14 ft. lbs.)

2. Connect the harness connector to the Coolant temperature sender and Coolant temperature sensor.
3. Connect the battery to ground cable.
4. Refill the system with clean coolant.