bluejeep Posted February 15, 2023 Report Share Posted February 15, 2023 2015 journey R/T. Like many, camera started showing horizontal lines, then went back to being ok, and finally crapped out completely. Installed a new camera unit but didn't fix anything. I do get power at the pink n yellow IGN R or "run relay control" pin #2 whether in reverse or not so power is going thru the fuse ok. The ground (both pins 5 and 6) are good grounds. What voltage should i get on the "camera signal" dk grn/brn pin 4 and the "camera rtn" dk grn/ org pin 3? And which of these is activated when i shift into reverse? What sensor indicates 'vehicle is in reverse' and results in power going to camera signal (or is it camera return?). TIA Quote Link to comment Share on other sites More sharing options...
bluejeep Posted February 16, 2023 Author Report Share Posted February 16, 2023 I learned about a 'transmission range sensor' on the auto tranny that sends a signal to the PCM about what gear has been selected and then decides if power is sent to the camera (only if reverse has been selected). Tomorrow I will check the connection, else I will try another new camera I guess. Quote Link to comment Share on other sites More sharing options...
John/Horace Posted February 16, 2023 Report Share Posted February 16, 2023 A lot of people on diy hook ups use one of the rear back up lights to activate or power camera. Easy access. Park neutral range selector switch in tranny works with a ground return I believe. Often the only ground leg on the starter relay under hood. Quote Link to comment Share on other sites More sharing options...
bluejeep Posted February 17, 2023 Author Report Share Posted February 17, 2023 And of course it turned out to be the wires going into the vehicle from the hatch. Clean cut thru all 3 - camera signal, camera return and bare wire. Fixed and enjoying seeing backwards again 2late4u, John/Horace and Miguel Pereira 3 Quote Link to comment Share on other sites More sharing options...
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