Turn signals and hazard lights do not work

COBRA346

MEMBER
2012 HONDA CIVIC
1.8L
4 CYL
2WD
AUTOMATIC
98,000 MILES

The fuse to the signals appears to be good. I could not locate the flasher relay under the dash or hood. Please assist.

Friday, October 11th, 2019 AT 9:48 AM

5 Replies

SCGRANTURISMO

MECHANIC
4,897 POSTS

Hello,

There is no relay flasher in your vehicle. Instead it is controlled by the drivers MICU. He MICU is located in the under dash fuse panel and is probably failing. The MICU also controls all lighting, neutral safety switch, wipers, windows, locks, and security. I have testing instructions for the MICU/F Can network but it requires Honda's scan tool called the HDS to do them. If you would like I can send them to you. Please let us know I will shoot them right to you.

Thanks,
Alex
2CarPros

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Friday, October 11th, 2019 AT 12:32 PM

COBRA346

MEMBER
4 POSTS

Thanks. I took my car to a local shop and the tech said my multi function switch was bad. Does it coincide with the MICU?

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Friday, October 11th, 2019 AT 12:58 PM

COBRA346

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4 POSTS

I don’t have a Honda scan tool. It there an alternative?

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Friday, October 11th, 2019 AT 4:46 PM

SCGRANTURISMO

MECHANIC
4,897 POSTS

Hello,

Yes it does. In the earlier reply I sent along a wiring diagram of the MICU. If you follow it to the bottom of the diagram you can see the combination switch. The hazard switch is on another circuit, but we are unable to see the internal circuitry of the MICU, but I'm sure that they share a circuit in the MICU. Please keep us informed as to how everything turns out.

Thanks,
Alex
2CarPros

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Friday, October 11th, 2019 AT 5:57 PM

COBRA346