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

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

1 answer 1 comment
check for power and ground at the pump
No power there what runs the whole system is there a control module