2007 Pontiac G5 Gt Coupe Logo
Anonymous Posted on Oct 11, 2013

No power at air pump,check fuse ok check relay ok

1 Answer

Stephen Bulger

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  • Posted on Oct 11, 2013
Stephen Bulger
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I'm unclear as to what you mean by "air pump". Please elaborate.

1 Related Answer

Anonymous

  • 4 Answers
  • Posted on Aug 19, 2012

SOURCE: put in new fuel pump,fuses are OK,new fuel pump relay and still no power to the fuel pump

Get a test light and test the wires going to it ground one end and see if you have power at the pump. If not do the same at the fuses so where you are not geting the power.

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If you are confident to try this on your own, this is what will be required to do. You will need wiring diagram : First try replacing the air pump relay (relay 2) in the Battery Junction Box (BJB). And check that fuse 4 & 9 are both good. If both are ok you will need to remove the air pump relay - With Key On Engine Off, check for battery voltage (B+) to be present at terminal 30 from fuse 4 of the BJB. Check terminal 86 to be B+ from fuse 9 of the BJB, through the power hold relay. Gain access to the bottom of the BJB and check for B+ on the black with green stripe wire for terminal 85 of the air pump relay. If voltage is present, ground wire to check for relay activation and air pump to run, repair circuit to air pump as needed. If pump runs, backprobe the Black/Green wire at terminal 17 of connector C175B of the Powertrain Control Module . Jump terminal to ground to check for air pump operation. If pump runs, check for bad connection in connector or replace faulty PCM as required
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