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sun roof wiring

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5.5K views 4 replies 3 participants last post by  wiggy  
#1 ·
hi all, my 96 P38 sunroof dont work, had switch assembly off and poked around with multimetre and i am getting some sort of readings although dificult pointing to it working, i also get message centre warning "sun roof not set" for both movements of switch.
had a look at wires to sun roof motor, my my theres a lot!! my i still waiting for rave cd so does any of you kind people know what these do?

roof motor side of connector
2 thicker wires
purple
blue

thinner wires
brown
red
black
yellow/white
2 x yellows (into same hole)

range rover side of connector
2 thicker wires
yellow/pink
yellow/orange

thinner wires
red/white
white/red
yellow/green
yellow/pink
black.

im guessing the thicker wires are power but not sure, just guessing.

many thanks.
 
#3 ·
Hi

To give you a hand the following wires are for operating the motor.

Yellow Pink
Yellow Orange

To test the motor you will have to disconnect towards the BECM and apply 12 V direct to the motor one way or the other way depending on which direction you want the motor to move.

Before you try with electric power I suggest you move the sunroof by hand to see whether there is no jam anywhere.

Normally the power towards the sunroof comes from 20A fuse 13 in the BECM fuse box. It is distributed towards the motor via two relays inside the BECM.

The Yellow green wire towards the control and antri trap circuits is wired via a limit switch that signals the BECM when the sunroof is closed. You might want to investigate that switch as the cause of all your trouble.

Good luck

Jos
 
#4 ·
thanks jos thats a great help, il give it a go.
im sure its an electrical fault as the roof did open then not close, i closed it manually then tried again, it did the same and now wont work at all, its definately not stuck, moves quite easy manually. thanks again.
 
#5 ·
Jos Geuze said:
... The Yellow green wire towards the control and antri trap circuits is wired via a limit switch that signals the BECM when the sunroof is closed. You might want to investigate that switch as the cause of all your trouble.

Good luck

Jos
Don't suppose anyone's got a piccy of the wiring in that area and the limit switch?