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BODY CONTROL UNIT DESCRIPTION AND OPERATION 86-3-5 C0661 connector pin details Pin No. Description Input/Output 1 Serial bus to instrument pack and IDM Input/Output 2 Not used - 3 Battery backed up sounder code (AL) Output 4 Diagnostic bi-directional 'K'-line Input/Output 5 RF regulated power supply Output 6 RF receiver input Input 7 Brake switch activated Input 8 Reverse gear selected Input 9 Sunroof enable line Output 10 Robust immobilisation Output 11 Front washer pump Input 12 Heated front screen relay Output 13 Heated front screen active Output 14 Battery backed up sounder code (ST) Output 15 Heated rear screen active Output 16 'N' or 'R' or 'P' or brake selected Output 17 Not used - 18 Passive remobilisation exciter coil Output 19 RF battery supply from fuse 20 in passenger compartment Input 20 Security status LED Output 21 Front intermittent wiper Input 22 Driver's door key unlock Input |