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All of these functions are controlled by the totally integrated power module (TIPM) so the first thing to do is check 30A fuse 10. Next, check 10A fuse 30 in the power distribution center (PDC). Power passes through the steering control module and the right steering switch to the horn switch. Pressing the horn switch sends a signal through the right steering switch and the steering control module to the TIPM which applies 12 volts to the horns, causing them to blow. If all fuses check good, the problem is in the other circuitry.
If fuse 10 in the TIPM is good, operation of the turn signal switch should cause the turn signals to flash.
If fuse 10 in the TIPM is good, check 5A fuse 35 and 10A fuse 30 in the PDC. If all fuses are good, the wipers should work.
My service manual states that the '02 T+C has a combination turn signal/hazard flasher/daytime running lights module which is located on the junction block, adjacent to and left of the steering column. To access it, you must remove the steering column lower cover and knee pad panel. There is also a fuse for turn signal/hazard flasher. If none of them work, check the fuse 1st.