With the voltages being at 0 going into the unit, it sounds like there is either a bad fuse for those functions or the module has gone bad. If you check the wires going into the module with a circuit tester like # PTW2993 and get function, but don't get function on the output side, then that will confirm the module is bad. Since it has worked so well for so long, I recommend the replacement of the same Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 55057.... view full answer...
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