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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 86 (On-Board Diagnostic - Advanced Keyless Entry System) >> DTC B10D1-23: Request Switch (LF) Circuit Malfunction >> Notes

DTC B10D1-23: Request Switch (LF) Circuit Malfunction: Notes

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
System malfunction location  Request switch (LF) circuit malfunction
Detection condition 
  • With the ignition switched ON (engine on), the start stop unit detects that the vehicle speed is 5 km/h {3 mph}  or more for a continuous 2 min or more  and the request switch (LF) is on 7 times or more  until the vehicle speed is less than 5 km/h {3 mph}  .
Fail-safe  -
Possible cause 
  • Front outer handle (LH) connector or terminal malfunction
  • LF control unit connector or terminal malfunction
  • Short to ground in wiring harness between LF control unit terminal C
  • Request switch (LF) malfunction
  • LF control unit malfunction
  • Start stop unit malfunction
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