Just fixed mine last Friday, it was a dead wire

(split somewhere between the door and foot well) there's only two that it can be

(black/yellow

- unlock was the busted one in mine.

Black/white is the lock one)

When I purchased my two, it never worked but last week decided to take the door card off an have a look.

You can test it by either going down the multimeter route or touch a wire into each end's harness

Hope it helps

Edit:woops sorry got carried away didn't read the bit about the passenger side locking remotely
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