u will find a lot of wiring diagrams and circuit diagrams help books and stuff like this at reliable-store
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There's a harness that runs from the rear body into the hatch, through a rubber tube. These wires break with age and movement.
Remove the hatch brake light and verify that the unit is getting +12v when the brake pedal is pressed. If so, connect +12v + Ground to the brake light directly, and see if it works. If not, you have a ground issue (usually corrosion) the brake light. Look for the ground connection in the hatch harness.
Repairing the hatch harness is doable, and easier than replacing the whole harness.
po768 is shift solenoid "d" control wire open or shorted. p0700 is a generic code that the transmission send to the ecm and is not relivant at all. to fix the first code p0768 you will need to know if the wire is broken or damaged from the solenoid to the computer the solenoid is inside the transmission and the computer is under the dash board infront of the steering wheel. here is the procedure you need to take to diagnose it.
not all faults show up as the same fault. Life would be easy if that was the case . However when there are a lot of faults exhibited and there is a loss of engine power The first thing that I check is the battery ,terminals for tension and clean and the drive belt for condition and tension. Lastly if the battery is failing many of the complaints will show up. I would suggest a load test done on the battery . If you got if from a car yard with that amount of miles on it I would question the strength and age of the battery . These suggestions may not fix the faults but at least you will have eliminated the major cause cheaply.
If the radio is a OEM fitment it may be controlled by the CPU in which case the program for it may be corrupted from taking the battery out all the time . Have the CPU reset using a code reader and if that doesn't fix the fault then it may need specialist audio sop assistance.
Jun 7, 2015 - Radio volume control on 2008 Subaru Tribeca does not work, but remote volume control on steering wheel works. ... does not... Replace the volume control(rheostat) inside the radio. .... Oct 09, 2014 ' 2007 Subaru B9 Tribeca.