sebastiantiger1
Mondeo Ignition Error
Summary of the thread
A 2018 Ford Mondeo is experiencing an ignition error, specifically "Terminal 15 ignition positive interrupted," preventing the engine from starting. The issue is suspected to be related to a cable or plug problem. Suggestions include inspecting the starter solenoid and wiring for corrosion or damage and performing a voltage drop test across the circuit. Ultimately, the problem was identified as a defective connector, which was repaired for 95€.
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4 comment(s)
sebastiantiger1 (community.author)
Voltage drop test - useful, but where exactly should I measure?
antonphoenix3
The voltage drop should be measured across each connection point within the circuit, including the battery terminals, ground connections, and the starter solenoid terminals themselves. A reading exceeding 0.2V typically indicates excessive resistance. However, given the potential complexities, it may be prudent to consult a qualified technician for a comprehensive diagnosis.
sebastiantiger1 (community.author)
It was a defective connector. 95€ repair. Thanks for the input.
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FORD
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MONDEO
antonphoenix3
I encountered a similar predicament with my previous vehicle, a 2014 Opel Insignia diesel. The symptoms you describe mirror my experience precisely. Have you performed a thorough inspection of the starter solenoid and associated wiring for any signs of corrosion or damage? A voltage drop test across the circuit may prove enlightening.