How to test an electric fuel pump - using a test light

2001 GMC 3500 8.1L engine with no fuel pressure. In this video I am showing how to test the fuel pump electrical circuit using a test light and scan tool. Engine Performance Diagnostics chapter 16 Symptoms - no start - no fuel pressure Fix - replace faulty fuel pump Tests shown - how to measure fuel pressure - how to test the fuel pump relay - how to test for proper power and ground to a fuel pump - how to test the transfer pump - how to test for a proper ground on your test light - how to command a fuel pump relay to turn on with a scan tool - how to test the computers control of the fuel pump relay - how to determine fuel pump wiring without a diagram Tools used - scan tool - Autel MS905 MaxiSys Mini Diagnostic System https://www.jbtoolsales.com/autel-ms905-maxisys-mini-diagnostic-system-with-vci-and-connector-kit-usa-version#oid= 1014_1 - incandescent test light https://www.jbtoolsales.com/otc-3633-mini-circuit-tester#oid= 1014_1 - back-probing tools - AES' Electronics Accupuncture Probes http://www.aeswave.com/cart.php?m=affiliate_go&affiliateID=60df1b5cf6e5582af6ff81c728f42d0d&go=http://www.aeswave.com/AES-Electronics-Accupuncture-Probes-p9474.html - S.U.R. & R FPT22 Deluxe Fuel Injection Pressure Tester Kit https://www.jbtoolsales.com/s-u-r-r-fpt22-deluxe-fuel-injection-pressure-tester-kit-1#oid= 1014_1 Playlist - (Chapters 14, 15,16) Fuel Delivery and Fuel Pressure Testing /playlist/PLAFYVCyenqcrstVqfSc1PCbQ1pebuNIO6 Related videos - How to test an electric fuel pump (1997 4.3L Chevy Blazer CPI) /watch/4lqs316YQjyYs - Low Fuel Pressure from a bad fuel pump ground (Ford Ranger) /watch/0tSQxIvt7QrtQ - How to test an electric fuel pump (no fuel psi testing) Ford /watch/k9x-iahXZ2FX- - Fuel pump electrical circuit diagnosis (no fuel pressure testing) GM /watch/UsSjpZ3YNgZYj - No Start No Fuel Pressure Troubleshooting /watch/YhNiF_GzP9Rzi - How to test fuel pressure, injector pulse and spark with basic tools /watch/M5SVAOgaxUSaV For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book. Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium https://www.scannerdanner.com/join-scannerdanner-premium.html There is a 14 day free trial. On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere! Disclaimer: Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.

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