XJ40 ( XJ81 ) 1986 - 1994

XJ40 1990 fuel filler lid wont open

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Old 07-21-2022, 07:00 AM
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Default XJ40 1990 fuel filler lid wont open

Hi, so I guess I have a problem with my central locking and the fuel filler lid is locked and only way is to open it from the trunk. The guestion is can I somehow get it unlocked permanently for example taking off the fuse from there? So that it would always be unlocked and could be opened just by pressing the lid?
 
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Old 07-29-2022, 12:51 AM
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Hi 1990XJ40,

Welcome to the Jaguar Forums! It's great to have you with us!

Please visit the New Member Area - Intro a MUST and post a required introduction so we can learn something about you and your Jaguar and give you a proper welcome.

You can download the wiring schematics for your car at this link:

Jaguar XJ40 Electrical Guide 1990

I seem to recall having trouble finding the schematic for the fuel filler latch, and I can't remember if it uses a bi-directional servo motor like the door locks or a plunger-type solenoid whose default unpowered position is extended/locked. You could try disconnecting the electrical connector (inside the trunk, behind the carpeted trim) and applying current with a 9-volt battery in both directions to see if you can get yours to open, then see if you can mechanically or electrcially prevent it from locking.

Cheers,

Don
 
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Old 07-29-2022, 01:17 AM
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Originally Posted by Don B
Hi 1990XJ40,

Welcome to the Jaguar Forums! It's great to have you with us!

Please visit the New Member Area - Intro a MUST and post a required introduction so we can learn something about you and your Jaguar and give you a proper welcome.

You can download the wiring schematics for your car at this link:

Jaguar XJ40 Electrical Guide 1990

I seem to recall having trouble finding the schematic for the fuel filler latch, and I can't remember if it uses a bi-directional servo motor like the door locks or a plunger-type solenoid whose default unpowered position is extended/locked. You could try disconnecting the electrical connector (inside the trunk, behind the carpeted trim) and applying current with a 9-volt battery in both directions to see if you can get yours to open, then see if you can mechanically or electrcially prevent it from locking.

Cheers,

Don

Thanks Don,

I put a new thread about my car into a new member area.

Thanks for the tip, i know where the wires are, there is also this fuse whichs is ok.
I will try this thing with battery!

 
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