W221 slave wiper motor inoperative

Hi everybody I have problem on my w221 2007 RHD slave (passenger) M6/7 wiper motor it's not working. I've purchased another used one and it's not working as well. Checked: 1) fuses - OK, 2) Voltage between 1-2 pins of socket - 12V, 3) Test a cable for continuity 3d pins on both sockets - OK. Dont know where to dig futher Faulty F SAM, or faulty master motor?

Hi everybody
I have problem on my w221 2007 RHD slave (passenger) M6/7 wiper motor it's not working. I've purchased another used one and it's not working as well.
Checked:
1) fuses - OK,
2) Voltage between 1-2 pins of socket - 12V,
3) Test a cable for continuity 3d pins on both sockets - OK.

Dont know where to dig futher Faulty F SAM, or faulty master motor?

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