My latest project, the Alpina B3 3.3 has developed a fault with the PDC (rear parking aid) on the corner passenger rear .
I have found that the passenger-side corner sensor is not 'clicking' when reverse is selected;
I have also found that all four sensors 'click' ok when plugged into other 3 locations (plugs) but not in the passenger side corner plug;
I have therefore got a wiring or control unit problem -
can anyone advise on best way forward with diagnostics?
are there any in-line plugs in the wring between sensor plugs and pdc unit i can check for dirt and broken wires etc?
where is the pdc positioned on a coupe with satnav and cd-changer?
ps I am getting 0 Volts on that senor plug!!!
pps Have just fixed rear lights as they were letting in water so could be damp somewhere