Thermostat Removal, Installation, And Test

Thermostat Removal, Installation, and Test

Removal

1. Radiator Cap

1. Wait until the engine is cool, then carefully remove the radiator cap.

2. Vehicle Lift

1. Raise the vehicle on a lift, and make sure it is securely supported.

3. Front Splash Shield





1. Remove the bolts (A), then remove the clips (B) that secure the front inner fender and the front splash shield (C) to the body.

2. From under the front bumper (D), remove the clips (E).

3. From under the body, remove the clips (F), then pull out the front splash shield.

4. Radiator Coolant - Replacement





1. Loosen the drain plug (A), and drain the coolant.

5. Thermostat





1. Disconnect the lower radiator hose.





2. Remove the thermostat assembly (A).

Test

Replace the thermostat if it is stuck in the open position at room temperature.

To test a closed thermostat:

1. Thermostat - Test

1. Suspend the thermostat (A) in a container of water. Do not let the thermostat and the thermometer (B) touch the bottom of the hot container.






2. Heat the water, and check the temperature with a thermometer. Check the temperature which the thermostat first opens, and at which it is fully open.

3. Measure the lift height of the thermostat when it is fully open.








Installation

1. Thermostat





1. Install the thermostat assembly (A) with new O-ring (B).





2. Connect the lower radiator hose.

2. Front Splash Shield





1. Install the front splash shield (A), then install the bolts (B) and the clips (C, D). Make sure the clips snap into place securely.

3. Radiator Coolant - Replacement

1. Follow the chart and pour coolant into the radiator up to the base of the filler neck.

NOTE:
* Always use Honda Long Life Antifreeze/Coolant Type 2 or Honda Extreme Cold Weather Antifreeze/Coolant Type 2. Using a non-Honda coolant can result in corrosion, causing the cooling system to malfunction or fail.
* Honda Long Life Antifreeze/Coolant Type 2 is a mixture of 50 % antifreeze and 50 % water. Honda Extreme Cold Weather Antifreeze/Coolant Type 2 is a 100% concentration coolant. Do not add water to either coolant.
* If the vehicle is regularly used in very low temperatures (under -22 °F (-30 °C)) a 60% concentration of coolant should be used.








*: When you want to winterize the coolant with the minimum amount of coolant change but the current coolant concentration in the vehicle is unknown, you must drain all coolant from the cooling system.













4. Reservoir Coolant - Replacement





1. Fill the coolant reservoir to the MAX mark (A) with Honda Long Life Antifreeze/Coolant Type 2.

5. HDS DLC - Connection





1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.

2. Turn the ignition switch to ON (II).

3. Make sure the HDS communicates with the vehicle. If it does not communicate, go to the DLC circuit troubleshooting.

6. Maintenance Minder Reset

1. Reset the Maintenance Minder. Description and Operation