LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Saab >> 2007 >> 9-3 (9440) L4-2.0L Turbo >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Description and Operation >> Compensation For A/C Compressor and Generator
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Compensation For A/C Compressor and Generator



Compensation For A/C Compressor And Generator





General
Torque can be requested from this function in order to keep the specified engine torque independent from the prevailing load from the A/C compressor and generator. Consequently, this is a positive request.

Compensation, A/C
The relay for the A/C compressor is controlled by ECM, which also reads the prevailing pressure in the A/C system via the pressure sensor (620). In this way, ECM can calculate the torque that must be added to compensate for the torque taken by the A/C compressor.

Compensation, generator
The generator informs ECM of the prevailing load through a wire from generator connection L. In this way, ECM can calculate the torque that must be added to compensate for the torque taken by the generator.