Help have a o4 with a code po628 My scanner will not earse this code. I can tell that the in tank fuel pump is not running. Need circuit drawing

 

A: You certain it has the in tank pump? 04's were born with the canister mounted one.

B: With the in tank you have a relay on the firewall and there is a small black fuse holder that supplies 12v to the relay to feed the pump. Look around the battery or pdc where that wire originates. Other than that, the factory lift pump wire is used to "trigger" the relay and supply 12V to the pump.