Another important step in diagnosing the heating system is to make sure that the blend door is functioning properly. The blend door is the part…

After verifying the engine is running at normal operating temperature, the coolant flow through the system should be checked. The engine should be started, the…

After checking the coolant level on the engine, the operation of the engine thermostat needs to be checked. One method to test and see if…

1. The radiator cap must be removed after the cooling system has cooled 2. The correct size coolant adapter is chosen and then installed onto…

After verifying that the heater is not performing well enough, the engine coolant level needs to be checked for the proper level. The coolant should…

The cabin heating system uses heated coolant from the engine to produce warm air for the passenger compartment. This simple system has been used on…

Let’s take a look at the different components. The coolant is the liquid medium that is used to transfer the heat from the engine to…

The cabin heating system is an important system that provides comfort for the passengers when the temperature is cool or cold. This system works in…

1. Use approved lineman’s gloves when removing and installing the high-voltage disconnect service plug. 2. With the gloves on, lift the handle on the service…

The duct doors control the airflow through the duct box. The types of duct doors include the following examples. Fresh/Recirculated Air Controls where the duct…