How to locate an open circuit in a wiring harness

14 Aug 2017 50:26 137
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This is a 97 Ford Crown Victoria with a 4.6L engine, that does not start. There is no 5 volt reference and no check engine light. Following the EEC Power relay revealed a missing power feed. Follow me as I find the open in this harness using a new tool.

Tools used
- ECT3000 Circuit Tracer (I used the ECT2000 in this video, maybe the 3000 series will have a more powerful open circuit signal?)
https://www.aeswave.com/cart.php?m=affiliate_go&affiliateID=60df1b5cf6e5582af6ff81c728f42d0d&go=https://www.aeswave.com/ECT3000-Circuit-Tracer-p9502.html
- Phil's Electrical Piercing Probe https://www.aeswave.com/cart.php?m=affiliate_go&affiliateID=60df1b5cf6e5582af6ff81c728f42d0d&go=https://www.aeswave.com/11-inch-Phil-s-Electrical-Piercing-Probe-p8557.html
- OTC 3633 Mini Circuit Tester
https://www.jbtoolsales.com/otc-3633-mini-circuit-tester#oid=1014_1
- Deluxe DMM w/Amp Shutters (alternate for the Vantage I used)
https://www.aeswave.com/cart.php?m=affiliate_go&affiliateID=60df1b5cf6e5582af6ff81c728f42d0d&go=https://www.aeswave.com/582-Deluxe-DMM-w-Amp-Shutters-p9340.html
- Bayco NSR-2168B LED Rechargeable Work Light - 600 Lumens w/3 Magnets Lithium-ion Battery
https://www.jbtoolsales.com/bayco-nsr-2168b-led-rechargeable-work-light-600-lumens-w-3-magnets#oid=1014_1
- Xscorpion HSBCR Heat Shrink Butt Connectors 18/22Ga;50/Bag;Red
https://www.jbtoolsales.com/xscorpion-hsbcr-heat-shrink-butt-connectors-18-22ga-50-bag-red#oid=1014_1
- Xscorpion HSBCB Heat Shrink Butt Connectors 14/16Ga;50/Bag;Blue
https://www.jbtoolsales.com/xscorpion-hsbcb-heat-shrink-butt-connectors-14-16ga-50-bag-blue#oid=1014_1
- Irwin 2078300 8" Self-Adjusted Wire Stripper
https://www.jbtoolsales.com/irwin-2078300-8-self-adjusted-wire-stripper#oid=1014_1
- Permatex 85120 Liquid Electrical Tape 4Oz - Each
https://www.jbtoolsales.com/permatex-85120-liquid-electrical-tape-4oz-each#oid=1014_1

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.
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