mrboca

Has anything changed in the camera display status ? Completely black now ? sometimes see image with lines still ? Maybe some software / firmware issue with the video circuit. Have you tried disconnecting the battery and reconnecting after a minute or so ?

RRocket

Mine is:

"When shift lever is in "R", rear view image is not displayed (Screen is black)"

Suspected area: 1) Display signal circuit (Television Camera Assembly-Television Camera ECU)
2) Television Camera assembly
3) Television Camera ECU

I had already suspected 2 or 3 as I said in initial post.

RRocket

Nothing has changed with car. Worked one day and not the next.

mrboca

Is your Navigation working ?

mrboca

If your navigation system is not also working (no display) I would check the 7.5 amp fuse for the TV ECU located at the fusebox in left side of the trunk. The navigation ECU signaling go through the Camera / TV ECU. This supplies 12V to the unit.

RRocket

Navigation works just fine.

mrboca

Have you tried to check if the system detects the camera using the System Check Mode ?

RRocket

No I have not! How do I do that??

mrboca

Try
https://www.clublexus.com/forums/att...menu-part1.pdf

Open the pdf file in the link, and follwo the instructions. You have not mentioned what year your car is....

RRocket

Thanks!

And yes, that's an important detail I omitted. It's a 2004 UL

RRocket

OK...I did the System Check Mode...and Camera came up with "CHEK" in orange.

So is that proof positive that it's the camera that's at fault?

mrboca

Can you get into diagnosis mode ? While in system check screen with orange check for camera, press the menu on the upper right to get into diagnosis mode. There is a camera test entry you can select.

RRocket

Yes, I did that. It essentially just turns the camera "ON". And of course, the screen was just black..though I did have a flicker or two.

mrboca

I guess than the problem lies with the camera and / or the cabling / connectors. If you can remove the connector at the camera side (4 pins) you could take some voltage measurements on the connector from the ECU wire harness. You can check if the 12 V (or may be 6V) is received at the socket for the camera. I believe the pinouts were posted in earlier responses.