P0504 - Brake Switch Correlation

P0504 - BRAKE SWITCH CORRELATION

Description:	This DTC sets when the calibrated threshold is exceeded during a comparison test between the brake pedal switch (BPS) and the brake pedal position (BPP) switch.
Possible Causes:	Damaged brake switch BPS circuit open BPS circuit short to voltage BPS circuit short to ground BPP circuit open BPP circuit short to voltage BPP circuit short to ground
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 .