Reverse lights stopped working on 2005 jeep grand cherokee. bulbs and fuses good. Dealership and aftermarket do not offer a neutral safety/reverse light switch. Any suggestions greatly appreciated

unture not sold, untrue its ,not there, there is a switch, but where is the question. did you read the FSM and see who runs the reverse lights first, a switch or the BCM/TCM /PCM? that be first, see how it works. let me do that for you at alldata.com read the manual first then leap.. did you scan the PCM first, that is FIRST ! after all it can send out DTC errors to the max, and are all important, (like REV failure?) did you know that this car has its own, shift lever Canbus computer, now that mine dont have, and is key. to this problem. more on next post. unture not sold, untrue its ,not there, there is a switch, but where is the question. did you read the FSM and see who runs the reverse lights first, a switch or the BCM/TCM /PCM? that be first, see how it works. let me do that for you at alldata.com read the manual first then leap.. did you scan the PCM first, that is FIRST ! after all it can send out DTC errors to the max, and are all important, (like REV failure?) did you know that this car has its own, shift lever Canbus computer, now that mine dont have, and is key. to this problem. more on next post.

im reading the FSM for you now, and can find the page, you need, nextg im reading the FSM for you now, and can find the page, you need, nextg

there are 3 sense switches inside the TRS (sol, module of trans) there are 3 sense switches inside the TRS (sol, module of trans)

oops, you never stated engine size and the bigger engines have 7 sense switches in the box. and all 7 got to PCM, not to lights at all !!! oops, you never stated engine size and the bigger engines have 7 sense switches in the box. and all 7 got to PCM, not to lights at all !!!

that 7 type is for engines, 4.7 and 5.7liters, do say? that 7 type is for engines, 4.7 and 5.7liters, do say?

so the PCM runs the lights, not the trans, sorry, but is PCM or TIPM under hood. Ill now look that up for you, next so the PCM runs the lights, not the trans, sorry, but is PCM or TIPM under hood. Ill now look that up for you, next

btw, at the dealer he'd push a button on his scan tool ($20,000 ) tool and cammand on the light, first. OMgosh its dead.? btw, at the dealer he'd push a button on his scan tool ($20,000 ) tool and cammand on the light, first. OMgosh its dead.?

im no going to rear of car and work forward, to source of reverse. im no going to rear of car and work forward, to source of reverse.

the MIP or TIMP runs this lamps , so lets not review the system, (distributed processing) driver selects reverse the TRS sends rev. digital signals to PCM, pack then sends CANBUS data to MIP (TIMP) then the TIMP hears this command and activates a driver board to glow tail reverse lamps. so if all fuse are good, and the scan tool sees no errors (I BET YOU IT DOES) then the lamps are blown. end story. if not clear on distributed data comms, ask. the MIP or TIMP runs this lamps , so lets not review the system, (distributed processing) driver selects reverse the TRS sends rev. digital signals to PCM, pack then sends CANBUS data to MIP (TIMP) then the TIMP hears this command and activates a driver board to glow tail reverse lamps. so if all fuse are good, and the scan tool sees no errors (I BET YOU IT DOES) then the lamps are blown. end story. if not clear on distributed data comms, ask.

now the proof , at end.

now the proof , at end.

this is the MIP , module integrated power. (TIPM on mine) the module gets serial command from PCM, if the scans show COMM errors U codes or C codes those are fixed FIRST as are fuse DEAD codes. SEE? this is the MIP , module integrated power. (TIPM on mine) the module gets serial command from PCM, if the scans show COMM errors U codes or C codes those are fixed FIRST as are fuse DEAD codes. SEE?

Does this help you see that it does not work any thing like a 93 GC? Does this help you see that it does not work any thing like a 93 GC?