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Power supply/ground

Power supply/ground


The ACC control module is supplied with power from +30 and +54. The +30 supply provides power and the +54 supply is used to start the ACC control module. When the starter motor is engaged, no current will be supplied from +54.

Current is applied to pin 22 of the ACC control module from the +30 supply via fuse 27 in fuse holder 22A. Current is applied to pin 4 of the control module from the +54 supply via fuse 21 in fuse holder 22A. The ACC control module becomes operational when the power supply is 10-16 V. Above or below this voltage range the ACC control module goes into OFF mode. The ACC control module, the cabin temperature sensor's suction-fan motor and the fan control share a common ground via the fan control's connector at grounding point G 34 P. The ventilation fan is connected to the + 54 supply via fuse 12 in fuse holder 22A. The fan control and cabin temperature sensor's suction-fan motor are supplied with power directly from the ACC control module. The cabin temperature sensor, blended-air temperature sensor and solar sensor are grounded from the ACC control module.