224: Ford Fiesta No Start Challenge
About this episode
A challenging no-start issue on a 2014 Ford Fiesta leads to a deep dive into diagnostic techniques, focusing on starter engagement and control module signals. Despite initial assumptions about voltage and starter relay faults, the root cause was traced to a severe voltage drop on the transmission ground cable, affecting the transmission control module's park/neutral signal and causing the ECM to release the starter relay. The episode highlights the complexity of modern diagnostics, the importance of thorough voltage drop testing, and lessons learned from real-world troubleshooting.
Today on the show I'll share a case study on a 2014 Ford Fiesta that engages and releases the starter when cranking, but will crank over if the starter relay is jumped. We made a wrong call on this one at first, but eventually get to the root of the problem.
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Ford Fiesta
"...e set you up on the scenario here. This is a 2014 Ford Fiesta with a 1.6 liter."
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