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Door Switch


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Can anyone tell me wether the door switch on the Td5 / Puma connects the earth when the door is open or closed?

My friend has rung me and needs to do the EKA thing on her 90, which has no working door switches - and I can’t check my 90 at the moment...

I think the door switches a wire to earth, which signals the ECU to turn on or off the interior lights by providing an earth path to them, which have a permanent live. 

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Yes you're right, the switches are grounded to one side by their individual fixing screws, the switched, (live side,) purple/blue wires, connect together and go back to the 10AS alarm module.

Switch closed with any door open = light on.

Edited by crwoody
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It’s the ignition  - but you have to open and close the door at certain points - and with a broken switch we did it by earthing the wire last time...  got it working and got complacent, never sorting the switch. Now she’s had a new battery fitted and it’s immobilised again.

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