I did the resistance test on the wiring that is connected to the steering controls, and each button put out the correct resistance.
Is there a way to test the resistance in the back of the radio?
I recently purchased an 06 Mazda 3 hatch, but the audio controls on the steering wheel don't work. I tested the wiring, and the steering keypad puts out the correct resistances to trigger the car stereo. However, the car stereo does not respond to the steering column controls. This seems to...