Question about 2002 Jeep Grand Cherokee

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Changed bulbs, fuses, stoplight switch, why wont my right brake light work??? I cant take it anymoreHELP

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Back to basics, check wire for continuity, you will need a volt ohm meter, and check the ground wires , you'll find the answer

Posted on May 05, 2010

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My running lights are working just fine no brake lights any suggestions? 1999 Lincoln continental


Brake light switch ? Lighting control module , fuse's ?
The stoplight switch is protected by Fuse 32 (15A). This fuse is hot at all times. With the stoplight switch closed, power is provided to the stoplamps through the lighting control module through Circuits 9 (LG/O) and 5 (O/LB). Ground is provided to the stoplamps through Circuit 57 (BK).
Symptom Chart-Stoplamps
Refer to the Electrical and Vacuum Troubleshooting Manual for connector numbers cited in the pinpoint tests. Use Rotunda 88 Digital Multimeter 105-R0053 or equivalent to perform pinpoint tests.
Symptom Chart-Stoplamps Condition Possible Source Action
  • No Communication With Lighting Control Module
  • Circuitry.
  • Lighting control module.
  • GO to Pinpoint Test BA .
  • Stoplamps Inoperative
  • Open fuse.
  • Circuitry.
  • Lighting control module.
  • GO to Pinpoint Test
You may want to take to a repair shop !

PINPOINT TEST BB: STOPLAMPS INOPERATIVE BB1 TEST STOPLAMPS
  • Press stoplight switch.
  • Check stoplamps and rear high mount lamp.
Are lamps on? Yes No RELEASE switch and make sure that lamps turn off. CHECK Fuse 32 (15A). REPLACE open fuse if open, RESTORE vehicle, RETEST. If fuse is good, GO to BB2 . BB2 TEST STOPLIGHT SWITCH INPUT
  • Connect Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent to data link connector.
  • Enter diagnostic data link.
  • Enter lighting control module.
  • Enter PID/data monitor and record.
  • Select PID: BOO_LCM - Stoplight Switch Status.
  • Hold stoplight switch.
Does data display read ON? Yes No GO to BB5 . GO to BB3 . This is with a factory scan tool , a code reader will not work !
BB3 TEST FOR VOLTAGE AT STOPLIGHT SWITCH
  • Test for voltage at input Circuit 10 (LG/R) to stoplight switch connector C253 .
Is B+ present? Yes No GO to BB4 . SERVICE Circuit 10 (LG/R) feeding stoplight switch. RETEST system. BB4 TEST VOLTAGE OUTPUT AT STOPLIGHT SWITCH
  • Test for voltage at output Circuit 511 (LG) of switch connector C253 .
  • Press stoplight switch.
Is voltage B+ at the switch? Yes No SERVICE Circuit 511 (LG). RETEST system. REPLACE stoplight switch. RETEST system. BB5 TEST POWER TO LIGHTING CONTROL MODULE
  • Disconnect connector C207 from lighting control module.
  • Test for voltage at connector Pin C207 , Circuit 907 (Y/W) and Pin C207 , Circuit 906 (R/O).
Is voltage B+? Yes No GO to BB6 . SERVICE Circuits 906 (R/O) and/or 907 (Y/W). RETEST system. BB6 TEST OUTPUTS
  • Using jumper wires, short Pin C207 , Circuit 907 (Y/W) to Pin C207 , Circuit 9 (LG/O). Using jumper wires, short Pin C207 , Circuit 906 (R/O) to Pin C207 , Circuit 5 (O/LB).
Do stoplamps illuminate? Yes No REPLACE lighting control module. RETEST system. SERVICE Circuits 5 (O/LB) and 9 (LG/O) for open circuit or damaged bulbs. REPLACE open bulbs as necessary. RESTORE vehicle, RETEST. This is Lincoln factory service info !

Jul 04, 2015 | Lincoln Cars & Trucks

1 Answer

Lincoln ls brake lights not working


Hey Danny,it could be your stoplight switch,it's attached to your brake pedal,here's a link on what it looks like.

Jan 08, 2013 | 2001 Lincoln LS

1 Answer

Brake light not working


THERE IS A FUSE, USUALLY IT WILL BE LABELED STOP. THE ONE THAT SAYS BRAKE MAY BE FOR THE ABS TWO DIFFERENT THINGS. { REPLACE THE STOP FUSE } . IF THE STOPLIGHT SWITCH IS BAD, IT IS NOT EASY TO CHANGE. IF THE TURN SIGNALS ARE WORKING IN THE REAR OF THE TRUCK, THAT MEANS THE BULBS ARE O.K. A BAD TURN SIGNAL SWITCH CAN ALSO KEEP THE STOPLIGHTS FROM WORKING, { LAST RESORT, EXPENSIVE & HARD TO REPLACE }

Dec 28, 2010 | 1996 Chevrolet C1500

1 Answer

My brake lights on my 99 pontiac montana wont work changed the switch box the bulbs and fuses still cant get them to work


Check the socket the bulbs are in,use a test light,see if there is voltage to the sockets,they are most likely the problem,and if the right part number bulb is not in the socket,they will not work also.

Aug 15, 2010 | 1999 Pontiac Montana

2 Answers

95' Buick regal, 3rd brake light works, tail lights work, turn signals work, stoplight switch seems to work ie 3rd brake light working, fuse is ok, changed bulbs, but no rear brake lights.


If the third brake light works and the regular ones don't, it is most likely a bad turn signal (multifunction) switch. The switch is able to kill the brakes lights to run the turn signals, and in rare circumstances does this. I've seen it several times. It could also be wiring, especially near the turn signal switch, but it is usually the switch.

Nov 25, 2009 | 1995 Buick Regal

1 Answer

Brake lights dont work


you need to get a test light and check every fuse again and go to the brake lamp switch and see if it is getting power to it and if it is you need to see if the power is coming out on a differant wire on the same switch if not you need another switch if you have power coming out of switch when you hit the brake pedal you will have to follow wires till you see where you are loosing power.

Jun 16, 2009 | 1997 Toyota Camry

2 Answers

My brake lights arent working!


Normally you'll find a brake switch at arm of brake pedal, up under dash. Switch should have 12v going in one side, when pedal not pushed, and both sides when pedal is pushed.

Jun 03, 2009 | 2007 Kia Rio 5 Sx M/T Hatchback

2 Answers

Right brake light out; tail light works fine


most rear tail lights and turn/stop lights are the same dual filiment bulb. it is possible for your tail light to work and your brake light not to and still have a bad bulb. I would check the bulb first, your brake light works on the left yes? this would mean that the fuse is fine

Mar 31, 2009 | 2006 Dodge Stratus

1 Answer

Rear Brake Lights not working, 3rd light is working


check the fuse for the stoplights. Even though the 3rd one is working it should be on a different fuse. With both of them not working even after you changed the bulb it would seem to lead to a fuse.

Feb 09, 2009 | 1999 Jeep Grand Cherokee

1 Answer

My brake lights wont come on on my 2003 chevy impala


Some cars have two brake switches under the dash. Try manually pushing the button on the switch while someone looks at the brake lights. It may just need adjusted. Good luck. Please rate me so I know how I'm doing. Thanks.

Dec 30, 2008 | 2003 Chevrolet Impala

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