Thanks for the response, MB Doc. So, does that mean it can be tested? Is it a simple open/closed circuit switch type of thing, or is variable resistance affair whose resistance is interpreted by the control module? Just curious as to whether this might be the cause of my issue. Although it's only a minor annoyance, it doesn't seem right that it should try to lurch on me at a stop when the A/C kicks in unless my foot is relatively firm on the brake pedal.