gicanul wrote:
Hi , I just had another test today and did the same... no horn going off (because I took out fuse#1) When I got home I cheched the battery when the engine was runing 14.3V, after I turned off was 12.3V , when disconnected the battery way 12.5V. Look like something is drawing power...I disconnected the battery again
I just noticed that the fuel gauge is at full and should be at half..
I don t see a fuse for fuel gauge I ll try to disconnect the wires from the gauge.
Thank you for support!
I would not worry too much about your battery voltage dropping a bit when connected...there are components like the BCM, PCM,TCM etc. that do draw a bit of current always.
We may later need to measure the current draw using the Amp setting on your multimeter....let me first check what fuse #1 is doing.....is this Fuse #1 under the hood or on the fuse panel inside the cabin?
There is normally a small red LED at the bottom of the Cluster that lights up when you exit the vehicle and lock the doors with the key remote. If you then open the door
not with your remote but with the key then this LED flashes and the horn goes off until you disarm it with the key remote.
Maybe there is an error somewhere in that area!
The Clock-spring that carries the horn signal, ABS, speed control etc. from the steering wheel down to the Module may be faulty but do not mess with the Clock-spring or horn button at this time!
Where are you located...USA/Canada or Europe or elswhere?
Have you downloaded the 2005 Jeep KJ Service Manual here:
http://www.colorado4wheel.com/manuals/Jeep/KJ/8W is the Wiring Section and the index gives you a Component Location so if you look for Horn you can find the relevant wiring diagram.
The horn basically gets activated by a the Horn Relay which is energized by the horn switch and Clock Spring...….or the Horn Relay can get activated by the BCM which also controls the Headlights etc. The Horn Relay is located on the Junction Block which is the internal fuse panel.
You need to flip this Junction Block over to access several relays...the location of the Horn Relay is shown if you search for Junction Block in the Component Location.
I am more inclined to believe that the BCM is activating the Horn Relay...not the Horn switch.
There is something funny happening as regards the BCM ie. horn is activated and headlights get turned ON! The BCM is plugged onto the rear of the Junction Block (internal fuse panel).
May be worth disconnecting the battery and re-plug the BCM on the Junction Block a few times in case of a bad connection.
If the problems are being caused by the BCM I would expect a CEL to be posted....you need to read out the latest CELs...may point to the problem!
Swap the Horn Relay with an identical one nearby...the relay may be failing!