secondary air injection wiring

pump 2 wire switch

By foreverGM
February 22, 2016 in 1982-2005 Chevrolet S-10/Blazer & GMC S15/Sonoma/Jimmy

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foreverGM

Posted February 22, 2016

Daughter has a 2001 Blazer- air pump code present- checked pump, vacuum solenoid in hose to check valves, fuses by battery. All work fine. Checked 2 wires at electrical switch- both are showing ground. Can anyone explain to me what the 2 wires should show voltage wise. I would think one ground and one 12v. Where can I get a wiring diagram for this circuit to trace the wiring? HELP!! Thanks

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