198003724 - 5040DC SOLAR SENSOR OPERATION CHECK (Automatic air conditioning)

Using a multimeter, check with the ignition key in the ON position between pins 1 and 3 and between pins 2 and 3 of the solar sensor    See K090 SOLAR SENSORthat the voltage is proportional to the thermal energy present on the windscreen analyzed by the sensor photodiodes: there should be a signal of less than 5 Volt (between 4.5 V - minimum solar rays - and 0.5 V - maximum solar rays).If there is a problem, using a multimeter and disconnecting the sensor, with the ignition key in the ON position, check the sensor power supply connector, between pins 1 and 3 and between pins 2 and 3 of the sensor supply connector    See K090 SOLAR SENSORthat there is a voltage of 5 Volts.