CDI AC compressor shutoff, function - GF07.16-P-3010IC

ENGINE 647.961 in MODEL 211

ENGINE 648.960 in MODEL 220

ENGINE 648.961 in MODEL 211

Fig 1: CDI AC Compressor Shutoff Function Chart

Switching off the coolant compressor reduces its output at start-up and acceleration, in order to make the maximum performance available.

For this purpose, the CDI control unit sends a signal to reduce the torque via the CAN databus to the AAC control and operating unit. The AAC control and operating unit reduces the output of the coolant compressor accordingly, until the coolant compressor is switched off. Once the conditions for torque reduction have expired, the coolant compressor is switched back on.

The coolant compressor is switched off at:

Engine load >90% (full load)
Engine speed < 2000 rpm

The coolant compressor is switched on at:

Engine load <90%
Engine speed >rpm

Component description for the crankshaft position sensor	L5	GF07.04-P-6010IC
Component description for the CDI control unit	N3/9	GF07.16-P-6000IC
Component description for the accelerator pedal sensor	B37	GF30.20-P-2010IC