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SL55/63/65/R230 AMG: CWA 50 intercooler pump for SL55

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Old Jun 27, 2020 | 05:53 AM
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Darius1966
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Mercedes SL 55
CWA 50 intercooler pump for SL55
Hello together!
I bought a Pierburg CWA 50 Pump to upgrade my intercooler Bosch Pump.
My Problem is that i only have 2 cables : Power 12V + and Ground - and the Pump has 3 pins : pin1 + pin2 PWM signal pin3 -

Does anyone know how to connect the pump properly?

i was told to to connect 12V to pin1 and pin2 and - to ground. then the pump turns a bit but very slowly like an emergency programm.

I wonder how to connect the pump to have full power.

Thanks so much!!

Darius
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