central locking wiring

hi all ,can anyone tell me the colours of the lock and unlock wires in the passenger front door at the door motor as can only seem to find one wire which gives a + pulse on lock but cant find any giving one for unlock
i am assuming there is possibly a break in a wire somewhere as all other doors lock and unlock from remote where as passenger front does not,however if your in car and you press passenger button down it locks all other doors and unlocks them all on pulling it back up , which is why im assuming ive got a broken wire for the unlock signal from remote .
can anyone give me the colour codes please
the vehicle is a 1997 2.5ds range rover

Get it tested with textbook first properly the door catch

thanks for your quick answer vougese39
however i have my own t4 mobile+
and when i do a check with it on passenger door it come's up with
and i quote : no communication faults found in nsf outstation
hence why im now looking for the actual lock and unlock colours so i can track the wires and meter them
regards jim

The door catch is not the out station!
And if there was a Brocken wire then it would show so door catch

yes i know its not the out station
but thats as far as i can check with the t4
perhaps im doing something wrong with it as only had it a few days
i could be wrong but if the door catch/motor was at fault surely it would'nt lock and unlock the rest of the doors when operated manually , and im not wanting to spend 150 plus vat on a new door catch/motor only to find there is a broken wire in loom somewhere.
however could you humour me and provide the colours for loock and unlock at door catch/motor ?
regards jim



regards jim