XJ (X350) V8-4.2L (2005)
Blower Motor: Locations
Control Components
Control Components
Blower Motor Control
The climate control system has a variable blower speed control. The operator has the option of manually selecting one of eleven preset blower speeds
from the control panel (seven preset blower speeds with telematics fitted) or selecting to operate the climate control assembly in automatic mode.
In automatic mode, the blower speed is determined as a function of many input variables. Based on the desired in-vehicle temperature, the system
constantly monitors the ambient temperature, discharge air temperatures, in-vehicle temperature and sunload levels then calculates the desired blower
setting.
There are special conditions that affect the blower speed while in the automatic mode of operation.
In a cold ambient temperature condition, the climate control assembly implements a Cold Engine Lock Out (CELO) feature with the blower motor. For a
cold vehicle interior, the climate control assembly will operate in low blower/defrost mode until the engine coolant temperature reaches a required value.