Notice: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.

Caution: Do not remove the pressure cap from the high fill reservoir while the engine is at normal operating temperature. An unexpected release of hot engine coolant may result in severe burns.

1. Relieve the coolant pressure.

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

2. Disconnect the negative battery cable.
3. Drain the cooling system below the level of the sensor.
4. Disconnect the electrical connector releasing locking tab.



5. Remove the coolant sensor from engine.

1. Coat the threads (only) with sealer P/N 9985253 or equivalent if sensor was not previously coated.

Tighten
Tighten the sensor to 13 N·m (10 lb ft).




2. Install the coolant sensor in the engine.
3. Connect the electrical connector.
4. Refill the coolant system. Refer to Cooling System Draining and Filling in Engine Cooling.
5. Connect the negative battery cable.