Control of A/C compressor
|
|
Control of A/C compressor
|
The A/C compressor engagement is controlled by functions in DICE and ECM. The following description covers what applies to functions in ECM.
The A/C compressor control function comprises two sub-functions
The logic function determines whether the A/C compressor should be turned off. This is done to enable turning off the A/C compressor under certain circumstances when the engine's maximum torque must be made available.
The A/C compressor will be turned off under the following conditions
|
-
|
Coolant temperature higher than 123°C (253°F)
|
|
-
|
Pedal sensor value greater than 95% and engine speed < 2500 rpm while driving in first gear
|
The control function governs the engagement and disengagement of the A/C relay after a command from the logic function.
After the power stage has amplified the signal, pin K30 will be grounded and the A/C relay will energize the A/C compressor electromagnetic clutch.
