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Blown Fuse for rear light causes non start ?? [solved]

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Old May 8, 2023
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Blown Fuse for rear light causes non start ?? [solved]

Good Evening All,

I’m an old git in Lincoln, so won’t bore you all with my life story. I am really hoping someone can help as I’m scratching my head.

I fitted a tow ball and 7 pin hook up to my 2009 1.8 Civic. I blew the fuse for the rear lights when carrying out a test (wrong polarity). The key was in the ignition. Fuse has been replaced. No other fuse is faulty yet now the start button does nothing and I have the steering wheel light and engine management illuminated on the dash. Engine light goes away after flashing. No faults show up on my ODB Device.

I’ve read many articles on here yet nothing seems to quite match. I’d be most grateful for any wisdom. The closest I can read is maybe I’ve upset the immobiliser??

The car only has 50K miles so if I have to spend some money so be it.

Thanks All.




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Old May 8, 2023
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re: Blown Fuse for rear light causes non start ?? [solved]

checked fuses under the hood too?
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Old May 8, 2023
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re: Blown Fuse for rear light causes non start ?? [solved]

Originally Posted by sdaidoji
checked fuses under the hood too?

Yes I have. All fuses including the clear box and busbar fuses.

it’s also worth mentioning this is the UK (European) Civic.

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Old May 8, 2023
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re: Blown Fuse for rear light causes non start ?? [solved]

Those lights might just be on because the engine is off.
Recheck the fuses related to the ignition and starter. Make sure you check them with a meter, there's twofuse boxes. Also check the brake switch. Immobilizer issues should make the antitheft light flash.
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Old May 8, 2023
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re: Blown Fuse for rear light causes non start ?? [solved]

Do all the exterior lights work again? I was going to guess another blown fuse as well.
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Old May 8, 2023
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re: Blown Fuse for rear light causes non start ?? [solved]

some connection still draining power?
Battery good?
hopefully nothing got fried before the fuse blew?
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Old May 9, 2023
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re: Blown Fuse for rear light causes non start ?? [solved]

Good morning All.

I have continuity across all fuses and all systems work that would normally work with ignition on. Bfale lights, indicators, blower, radio etc etc.

I’ve booked a mechanic to look at it tomorrow. I shall keep you all posted.
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Old May 10, 2023
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re: Blown Fuse for rear light causes non start ?? [solved]

Good Evening All.

The problem turned out to be a faulty starter switch. Maybe I blew a resistor when I blew a fuse. Who knows. New switch on order. Old one bypassed to prove its faulty and the car runs fine.
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Old May 10, 2023
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re: Blown Fuse for rear light causes non start ?? [solved]

Glad you figured it out
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