3315676 - E3580 PREPARATION FOR CELLULAR TELEPHONE - Functional description

Functional description

The connection D75 receives the direct supply (pin 1) from the battery via the line of fuse F18 of the junction unit B1 and the maxifuse B5 . Receives the ignition-dependent supply (INT/A) (pin 5) via the line of fuse F5 of the junction unit B1 . Pin 3 of connection D75 is earthed at C34 , while pins 6 and 7 supply the signal to the loudspeaker P46 , connector B, while connector A is for the car radio (see E3510 - RADIO). Pins 4 and 8 of connection D75 represent the preparation for the microphone P26 (hands free function). Only the 2.0 TB 6M and 3.0 V6 versions have the preparation at the front courtesy light fitted as standard; the other versions have the preparation up to coupling D42 (Dashboard/Courtesy lights coupling). The MUTE signal for decreasing the volume during a telephone call is sent to the radio system via pin 2 for connection D75.