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sebastiantiger1

Mondeo Ignition Error

My 2018 Ford Mondeo gasoline, 29461 km, throws an error: Terminal 15 ignition positive interrupted. Engine won't start. Suspect cable or plug issue. Anyone seen this?

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)

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.

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