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DTC C0040:13/C0040:64 [Abs/TCS]: Notes

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION AND POSSIBLE CAUSE

C0040:13 Brake switch
C0040:64
DETECTION CONDITION  C0040:13 
  • Detect the open circuit in brake switch circuit for 0.3 s. 

C0040:64 
  • Detect brake switch ON signal for 15 min or more  when driving at vehicle speed of 15 km/h {9.3 mph} or more. 
POSSIBLE CAUSE 
  • STOP 10 A fuse malfunction
  • Connector or terminal malfunction
  • Short to ground or open circuit in wiring harness between brake switch terminal B and battery positive terminal
  • Open circuit in wiring harness between brake switch terminal D and ABS/TCS HU/CM terminal N
  • Short to power supply in wiring harness between brake switch terminal D and ABS/TCS HU/CM terminal N
  • Brake switch malfunction
  • ABS/TCS HU/CM malfunction
G06199376Courtesy of MAZDA MOTORS CORP.