Jeep Garage  - Jeep Forum

Jeep Garage - Jeep Forum (http://www.jeepgarage.org/forums.php)
-   Grand Cherokee - WJ (http://www.jeepgarage.org/f51/)
-   -   Backup lights help (http://www.jeepgarage.org/f51/backup-lights-help-74218.html)

Janti 04-20-2014 09:04 AM

Backup lights help
 
Hello all

this is my first post as i found this forum recently and i like it a lot,

i want your help guys on this, i have a problem with my 2002 JGC backup lights, i have checked the fuses and the bulbs and every thing is working fine.

when i switch to reverse gear the lights does not light up, last week i went out to an off road trip and suddenly after a lot of vibrations and shocking on the sands when i switch to reverse gear the bulbs light up both and kept working fine for 2 days. so now they are working sometimes and some not.


Any ideas? any one faced such and issue?

Thanks

JeepMe 04-20-2014 10:53 AM

Re: Backup lights help
 
Sounds like a loose connector/wire somewhere in the system. Sometime when they're not working, I would get a wiring diagram, DMM, and start tracing the system.

Frango100 04-20-2014 11:25 AM

Re: Backup lights help
 
Welcome to the garage.
Sounds as the reverse switch. Which tranny?

Janti 04-20-2014 01:35 PM

Re: Backup lights help
 
Quote:

Originally Posted by JeepMe (Post 1009945)
Sounds like a loose connector/wire somewhere in the system. Sometime when they're not working, I would get a wiring diagram, DMM, and start tracing the system.

thanks a lot for the help, i need to do this diagram as soon as possible

Janti 04-20-2014 01:37 PM

Re: Backup lights help
 
Quote:

Originally Posted by Frango100 (Post 1009956)
Welcome to the garage.
Sounds as the reverse switch. Which tranny?

i think its the 45Rfe am not really sure but i will double check it tomorrow if there is a plate on the case that shows model number, but if so where can i find the reverse switch?

Frango100 04-20-2014 03:26 PM

Re: Backup lights help
 
The 5-45 RFE is coupled to the 4.7L. The reverse switch is inside of the transmission and is part of the solenoid block. This can only be changed as a complete assy and cost around USD 280. (Automotive Transmission Electronics Specialists)
If you have the 4.0 then it has the 42RE transmission, which has the switch on the outside of the housing.
Next time it doesn't work, try to wiggle the transmission lever a bit or select reverse a few times and see if they come on. A sligtly misaligned shift lever could be the problem as well.

Janti 04-21-2014 01:40 AM

Re: Backup lights help
 
Quote:

Originally Posted by Frango100 (Post 1010024)
The 5-45 RFE is coupled to the 4.7L. The reverse switch is inside of the transmission and is part of the solenoid block. This can only be changed as a complete assy and cost around USD 280. (Automotive Transmission Electronics Specialists)
If you have the 4.0 then it has the 42RE transmission, which has the switch on the outside of the housing.
Next time it doesn't work, try to wiggle the transmission lever a bit or select reverse a few times and see if they come on. A sligtly misaligned shift lever could be the problem as well.

thanks a lot Frank, i have the 4.7L so i think its a big job to do :) usually i try to wiggle the lever but nothing happens, i think i need to fix that switch at the solenoid.

thanks a lot every one, i will update the post when i fix it.

Frango100 04-21-2014 03:09 AM

Re: Backup lights help
 
You can bypass the switch by putting a jumper wire between pins 1 and 6 on the large TRS solenoid connector on the left side of the transmission. Then you will be sure that the problem lays internally with the switch and not externally with a wire.
If you decide to change the solenoid pack, then i can give you some tips to do this job. You need to have some basic tools and a bit of mechanics experience, because you will need to remove the valve body to get access to the solenoid pack. No rocket sience though.

Janti 04-21-2014 08:31 AM

Re: Backup lights help
 
Thanks a lot, i will look into it today or tomorrow and update you


All times are GMT -5. The time now is 02:45 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community