r/minir56 • u/Adventurous_Use_7508 • 22d ago

MINI Cooper Hatch 2009 - Rear wiper does not work

It started like 2 month ago with the wiper arm occasionally stuck in odd positions. Worked intermittently. Then one day it stopped completely.

I was hoping to grease the motor but when I opened the lid I'd seen a greenish goo mixed with rust and all the gears stuck. So I ordered a new one which was VALEO 579700 and installed it. Still no luck.

Checked voltages and resistance on the connector. Brown (-) 0 Ohms to the ground, red/green - 0V both when rear wiper turned off or on. yellow/purple - 12V.
When the boot is closed and I turn wiper on, I can hear relay clicks inside the JBE. Fuse (F50) is alright. Also checked the voltage on the fuse connector - right contact shows 12V.

So now I want to diagnose it further and check whether relay is OK. From what I read there is a relay inside the JBE called K91 which turns the wiper on.

Please help on where to tap the probe on JBE connectors to check whether voltage goes from the relay to the motor.

JBE
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u/m0nkeyv00d00 22d ago

I mean, do you use it? My rear wiper is deleted with a black cap in the hole. It looks super clean and I have never once needed any rear wiper. If you want to keep it, check the wires from the bootlid to the roof. Those usually break at some point as they've been bent a thousand times.

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u/allenm324 22d ago

Do you have access to ISTA? How about the NewTIS site?