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Suzuki df115 high pressure fuel pump problem

wwarden5091

New member
2006 DF115 gnd is missing at high pressure fuel pump. 12v appears to be there when grounded to eng block. Looks like this gnd may be fed fm ecm. Is this a bad ecm???
 
The fuel pump is powered by a relay, the relay is activated by the ECM. There should be a constant ground at the fuel pump connector and a switched pos. So when you turn the ignition on, there should be 12v at the pump connector for about 5 secs
 
Sorry, I am incorrect, just found a wiring diagram. You are right, fuel pump is grounded by the ecm. Ground should be present for 5 seconds after turning on the ignition and then permanent once engine is running. Try connecting a the ground via a small jump lead and see if the pump runs or alternatively power the pump with a made up feed from the battery direct to see if the pump works.
 
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