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.

1. Disconnect the negative battery cables.
2. Drain the cooling system below the level of the coolant temperature switch.
3. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.



4. Remove the hold down nut and washer on the coolant temperature switch.
5. Remove the harness connector (1) from the coolant temperature switch.



6. Remove the coolant temperature switch (1).

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

1. Install the coolant temperature switch (1).

Tighten
Tighten the sensor to 25  N·m (18 lb ft).

2. Install the harness connector (1) onto the coolant temperature switch.



3. Install the nut and washer onto the coolant temperature switch.

Tighten
Tighten the nut to 0.75 N·m (6.6 lb in).

4. Refill the coolant system.
5. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.
6. Connect the negative battery cables.