Thermostat Housing
Engine Valve Cove
Intake Manifold
Expansion Tanks
Variable Valve Timing (VVT)

EGR Valve
Secondary Air Pump
Oil Cooler
Blower Resistor
Heater Valve
Throttle Body
Ignition Coil
Nitrogen Oxygen Sensor
Headlight Leveling Sensor
Oxygen Sensor
Temperature Sensor
Brake Light Switch
Fuel Pressure Regulator
Mass Air Flow Sensor
Oil Pressure Switch
ABS Sensor
Auxlliary Water Pump

Blower Resistor (heater resistor,blower motor resistor,heater blower resistor)

What They Do
Blower Resistor, typically to generate voltage in proportion to electrical current. These resistors allow the blower motor to function at lower.

Failure Symptoms
If the blower motor resistor fails, the blower motor only functions at its highest speed and can not decelerate.