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#15 |
![]() Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
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The fuel pump relay is the most likely suspect for the buzzing. The CEL when the ignition is off is puzzling as the ECU has no power source at that point, but I suppose if the fuel pump relay is getting power from somewhere that would be the same source that's powering the ECU. Do either of you have the FP contact in the diagnostic box jumpered to anything?
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