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DTC P0504: Brake Switch Correlation

P0504 - BRAKE SWITCH CORRELATION

Description:  The PCM does a comparison test between the brake pedal switch (BPS) and the brake pedal position (BPP) switch.
Possible Causes: 
  • Damaged brake switch
  • Open or short in the BPS circuit
  • Open or short in the BPP circuit
Diagnostic Aids:  Check the state of the BOO1 and BOO2 PIDs. The BOO1 PID is normally open and BOO2 PID is normally closed.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST FD .
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