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DTC B10D3 23: Request Switch (RF) Circuit Malfunction: Notes

WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC B10D3:23 (ADVANCED KEYLESS ENTRY SYSTEM) DETECTION CONDITION AND POSSIBLE CAUSES

Description  Request switch (RF) circuit malfunction 
Detection condition 
  • Start stop unit detected any of the following conditions at a vehicle speed of 5 km/h {3 mph} or more  .
    • The request switch (RF) is continuously ON for 2 min or more  .
    • The request switch (RF) was ON 7 times  before the vehicle speed decreased to less than 5 km/h {3 mph}  .
Fail-safe function  Not applicable
Possible cause 
  • Front outer handle (RH) connector or terminal malfunction
  • LF control unit connector or terminal malfunction
  • Short to ground in wiring harness between LF control unit terminal E and front outer handle (RH) terminal D
  • Request switch (RF) malfunction
  • LF control unit malfunction
  • Start stop unit malfunction
G09786673Courtesy of MAZDA MOTORS CORP.