What could be the cause for2002 jeep grand cherokee lower break lights won't come on, i already replaced the whole tail lights, please help

ernesto cuadra

• 12223 Answers
• Posted on May 15, 2012

SOURCE: 2001 Jeep Grand Cherokee Limited left break light goes out, but already replaced bulbs. May not be related, but both turning signals randomly don't work and at other times, all of a sudden work. H

see the diagram attached and proceed according for troubleshooting.

SOURCE: 94 Jeep Grand Cherokee Laredo: No power to left tail light

Traced the problem to the Lamp Outage Module located in the rear left quarter access panel behind the spare tire. Arcing had occurred on the left taillight line. Fortunately this part is readily available at your local Jeep recovery yard (none available in the U.S. from dealers). Recommend J& W Auto Wreckers in Antelope, CA (web site available). Massive number of Jeeps and fair prices. If you don't want to replace the LOM then you can join the two connectors that go into the LOM (LOM is optional) but you'll always show a lamp failure on your console.

SOURCE: talil lights and break lights not working on 1999 jeep

Check for harness wiring in rear door.

SOURCE: 1998 Jeep Grand Cherokee Left Tail/Stop Light Inop.

You need to check for power and ground. If you dont have a volt meter you can get a good cheap one from radio shack. If there is no power recheck with a known good ground. All the lights on that side share a common ground. Check the sockets for signs of burning or corrosion. There is a plug in the left rear quater panell. If you have no power check the corrisponding wire at that connector. The wires splice togeter just before the connector. So if the other brake/tail light is working you know the problem is after that. Hope this helps. Im sure you'll find the problem.

SOURCE: 97 Jeep Grand Cherokee lights won't work high

Use a test light, or a ohmmeter and check the wires at the wire plug under the dash that go to the multi-function switch thru the steering column cover, you should have continuity between #18 and #19 low beam terminals, if not the switch is bad and will need replaced. it shows how to check this in Haynes 1993 to 2004 Jeep Grand Cherokee repair manual #50025 page 12-6. To replace the switch in the column cover, remove the negative battery cable, wait 2 minutes to disarm the air bag system, leave cable disconnected, before removing the column cover.