P38A Complete failure of window regulator and mirror (switch pack)

Frank_38 · Tuesday at 13:39

pwood999 said:
Two more things to verify:

1) Do the mirrors move correctly or are they also not working ?
2) Does the car lock & unlock normally ?

Either of both of these require power to the door outstations, so if they are working then you probably have 12V & ground to each front door & fuses F9 & F22 are ok.

You really need a Nanocom to see what's actually failing. Remember the Switchpack to BECM and the BECM to Outstation require serial data & clock signals. Nanocom would A) tell what the BECM is receiving, and B) allow you to activate the outstation even if the switchpack has failed or has no power.

BTW, failure of any of fuses 2 to 22 should normally display a message in the dash.

1) Do the mirrors move correctly or are they also not working ?
if I engage the reverse gear, then yes - otherwise they don't work (in neutral)

2) Does the car lock & unlock normally ?
yes

I have removed the panel. I have also found the window motor. The plug has 6 pins - can someone please tell me where I should connect the positive and negative terminals of the battery? The car will now stand in the rain for 6 days - I have to close the window. Thank you!!!

pwood999 · Tuesday at 14:13

As said in post #4 you really need to download RAVE. It's all in there.

Hint 1 & 3

Frank_38 · Tuesday at 14:36

pwood999 said:
As said in post #4 you really need to download RAVE. It's all in there.

Hint 1 & 3

I have the PDF file with the 1300 pages - but nothing is stored there under Service repair no - 86.25.04?

pwood999 · Tuesday at 14:54

Electrical Troubleshooting section. Try searching the PDF for "Power Windows". Then skip to page 1590 or thereabouts.

Frank_38 · Tuesday at 15:02

my PDF only has 1360 pages?

Frank_38 · Tuesday at 15:10

I have found the Electrical Troubleshooting manual pdf - but I don't understand it...

Frank_38 · Tuesday at 15:15

I can try it out - is it always plus cable at the top and then minus at the bottom?

pwood999 · Tuesday at 15:16

Then it's not the complete version. My copy is 5199 pages, but the ISO version is much easier to navigate.

There's a website here with all the PDF's from RAVE.
https://github.com/IRusio/Range-Rov...RR 96MY Electrical Troubleshooting Manual.pdf

Frank_38 · Tuesday at 16:20

Thank you, I have read the Electrical Troubleshooting manual pdf. But it doesn't show the plug from the motor - but the individual plugs - I don't understand anything about that.

Here page 249 - I think:

https://www.fuddymuckers.co.uk/rtfm/RangeRover/P38/RR_P38_MY99_On_Electrical_Troubleshooting_Manual_LRL0329ENG_5th_Edition.pdf

In general, I find it difficult to come to terms with it - to go to all this trouble without success.
I'm sure that this one fuse is causing the whole thing. I've now covered them all with foil again - the rain is coming. We'll continue tomorrow - there's no giving up!

Thank you very much for the great support here!!!

pwood999 · Tuesday at 16:24

If you search for the connector number it shows you. C1565 on page 590 of that link you posted.

SW & SG are the wire colours (page 14) if you need to identify the pins.

Frank_38 · Tuesday at 16:28

I have another question. For a long time I have had the problem that when I open the car on the remote control - all the pins go up - only the one on the driver's side stays down - but you can clearly hear the motor running. As I took the panelling off for the first time today - I could definitely tell that it is the small motor. Has anyone had this before? Here is a photo - maybe someone will recognise the fault:

red is the rod that goes to the pin...

Frank_38 · Tuesday at 16:40

pwood999 said:
If you search for the connector number it shows you. C1565 on page 590 of that link you posted.

SW & SG are the wire colours (page 14) if you need to identify the pins.

View attachment 342391

Thank you. The question is, how can I switch off the window regulator?
I would like to disconnect the car battery and trigger the whole manual with a wire. In other words, energise the motor of the window regulator.

pwood999 · Tuesday at 17:16

You don't. Simply connect 12V to the motor until the window reaches the top & disconnect the wires. Start by applying 12V for 1-2 seconds & see which way the window moves. Do it in stages makinbg sure you disconnect at the top to avoid burning the motor out or jamming the mechanism.

If you're really not sure what you are doing, then cover the car for now & find an auto electician.

Frank_38 · Tuesday at 17:33

thanks! but how should i proceed? plus on the 1 and minus on the 2? then plus on the 1 and minus on the 3? .... i have now checked all the PDFs but nothing says how to trigger it. I phoned my LandRover dealer today - the next available appointment is in 8 weeks!

Everything I do - is at my own risk!

pwood999 · Tuesday at 19:25

12V (batt +) on pin-1 & 0V (batt -) on pin-3 briefly wathcing which way the window goes. If it tries to go down, reverse the wires.

The other pins are used by the outstation & BECM for blockage / trap detection, so you don't need them for manual closing.

Frank_38 · 2025-06-05T10:00:09+0100

pwood999 - thank you very much!
That worked out great - the windows are closed and I now have peace of mind and can prepare everything else in peace.
This was my setup: I quickly built 2 plugs

P38A Complete failure of window regulator and mirror (switch pack)

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