2001 Mercedes-Benz S430 Q&A

2001 Mercedes-Benz S430 Question: i've replaced air pump front struts and relay i,m not getting power to pump. ple

i had it towed to the deaier and they said bad pump brought it home got new pump and relay still nothing.fuses under hood are good any ideas -
Answer 1
check for power and ground at the pump -
Comment 1
No power there what runs the whole system is there a control module -