A Embedded module is based on Renesas M306N5FCTFP Microcontroller. Two buttons are connected to this module. Left button moves the left seat to folded or seated position. Right button moves the right seat from folded or seated position.
Power folding seats are Third Row seats in a particular Ford SUV. A DC Motor is attached to each seat. When user presses left, right, or both buttons, module outputs motor voltage to move one or both seats in forward or reverse direction.
This is closed loop feedback system. Motor has single hall sensor. It sends hall pulses to module when motor is turning or moving seat(s).
The seats work find in the Ford Vehicle but but on the Bread Board the module makes constant click noise. After installing same software in the replaced module, still constant click noise. The module is powered from external DC Power Supply.
What might be the problem ?