radio display black does not power on. Rh low head lamp inop , lh rear tail light inop
I have been diagnosys this volt for a short on fuse F7 label interior lights. how ever all interior lights are operating when opening any door . even when the fuse is blown installing new fuse , right away pops.
okay ,so I installed a 300 ma lamp test light in series of course is illuminating. I disconnected the conector 4 on bcm ligth goes off from fuse it goes to this connector, so nice this leg is not shorted , now connected back light iluminates. while I was trying to make sense of the diagram the test light when off , I had closed the door lock latch. I was humm the short disappear. I open the drivers door and boom short is back, and after the interior light command time out , the short goes away. during the short was live I unplugged 1 by one the bcm conectors , of course x4, , but other than that , when unplugged connector 7 the call x7. the short goes away. my color wiring diagrams only shows until x6 connector. since I do not have the map( wiring diagrams) I stoped there and I am going back on Saturday.
history : customer said when on vacation for about a month and when he came back the 12 v battery was dead . jump started and now info center for radio / hvac the screen is black doesn power on . and the other lights no working RH low beamand lh rear and blow fuse he doesn't remenber if appear at the same time .
I need help with diagram for connector x7. I only could obtain pin out . but I am trying to make sense if this is caused by an input from doors, and any out put circuit in other conector having the current flow. and I am confused with blown f7 fuse , why all onterior ligths work .
any advised is appreciated.
When working with parasitic draw, always use either an inline amp meter, or a current probe that is very stable and does not drift. Using a test light for this test is very hard on your nerves, since you have no idea how much current is flowing through the circuit. Parasitic draw is measured in miliamps. Before you start the job, open the doors, and close the locks, so you the interior vehicle…
thaks alvin, this is direct short what I have I need current flow, for testing that is why I have the test light in line in the fuse in series . yes I use the amp clamp or voltage drop acrros fuses for parasitic draw .
Since you have a short to ground, use a headlight bulb in place of the fuse for that circuit. The headlight bulb will limit the current to the circuit. Let it sit for a while with the circuit loaded, then use an IR camera to take a picture of the circuit. Let the heat lead you to the problem.
Which fuse f7 is blowing, I see on the power distribution diagrams there is multiple F7 fuses. F7DL F7DR F7RA.
Thanks for the response ,fuse box is on the end of the dash rh side . the only label on the fuse is 7 , interior light
So its F7DR. Does your short go away when connector x5 is disconnected.
When the F7DR (INT LAMPS) fuse is open, both dome lamps, sunshade lamps, reading lamps, and backup lamps will be inoperative. I would make sure you do nont have a shorted bulb before you get too far into this.
I unplugged all interior lights ,map trunk , dome light still present the short , I did not do any thing on the reverse ligth
that is the wear part all interuor ligths iluminates when I open the doors and go off if I closed them with the blown fuse
yes it does , or when the bcm goes to sleepafter about 15 minutes of closing the doors, as soon as I open any door is back
Yes , the wire that goes from the fuse to bcm , to connector x5 pin4 it dos go away , the short, and that short is passing through the bcm because after closing the doors and bcm goes to sleep , the short disappear
How much current is flowing when the short occurs?
probably unlimited , the 7.5 fuse pop up rigth away, I have a test ligth in series , my test ligth draws 330 ma with full power and ground, with the short is drawing , 240 ma
tomorrow I am goung back to that vehicle
what information system are you using? I have Mitchel on demand and it shows connector x7, I jus don't know how to attach it.
The all data oem diagram I do not think is correct. I was also using that. The oem diagram is different on identifix
These may help. They call the fuse F7DA on these diagrams. [Attachments removed from DN due to copyright concerns.]
thank you , I got that far how ever what is conected to x7 every load and input is what I am having trouble
connector 2 pin 8?? I do not know yte
All-Data's non-oe diagrams seem better in this instance. Search for body control module and pick the non-oe diagram, it has connector x7 and where each wire goes off to for the interior lighting system. You'll probably need to have a couple tabs open so you can switch back and forth easily. Is there any circuit you specifically are interested in?
not really a circuit because at thispoints I am trying to figure out for the responsible of the cause of the short