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Here's your quick wiring diagram for tail lights and TIPM pinout: dropbox.com/s/3c58s0ymktvnmik/caliber%20tail%20lights.pdf?dl=0
There are no fuse or relay for tail lights all is done in Total Integrated Power Module so most probably your TIPM output for taillights is busted.
TIPM act like automatic fuse that cut power as long a short-circuit is detected and restore power once condition cleared. Therefore if you are lucky you can have a failed light bulb that went on short-circuit and once light-bulb replaced power is restored and will work. Yet if with light bulbs removed you still don't get any voltage to them you are looking at a faulty TIPM.
I've repaired lots of TIPM all you need is to replace the high side switch IC that correspond to taillights output , its $5 Freescale QFN power IC
Last edited by Moc; 10-18-2019 at 02:13 PM.