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Brake lights not working

Tiny
JACKROSS
  • MEMBER
  • 2000 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 100,000 MILES
My tail lights don't work, however brake lights work, turn lights, back up lights all work just not the tail lights. Replaced bulbs and tail light sockets, fuse. Any idea
Monday, February 16th, 2009 AT 5:00 PM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
More than likely this is an issue with the multifunction switch.

So, the way we need to test this is to turn the lights on so that the taillights should be on and check the voltage coming out of the switch.

https://www.2carpros.com/articles/how-to-check-wiring

You will see in the wiring diagram below where the tail lamps are fed from the switch. So, we need to find out if the rear lamps are being commanded on. If the voltage is coming out of the switch, then we more than likely have a wiring issue before we get to the splice in the rear of the vehicle.

Please see the info below and let me know what questions you have, and we can go from there.

Thanks
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Friday, January 28th, 2022 AT 6:17 PM

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