P0504 Brake switch

			Test results
1	COMPONENT CONCERNED	CONNECTIONS CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Brake pedal switch connections	Check that the connections are not faulty	Go to Step 2	Faulty connections	Restore the correct connections
2	COMPONENT CONCERNED	WIRING CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Brake pedal switch wiring	Check the wiring continuity	Go to Step 3	Faults in the continuity of the wiring	Restore the correct continuity for the wiring
3	COMPONENT CONCERNED	WIRING CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Brake pedal switch wiring	Check that the wiring is correctly insulated	Go to Step 4	Wiring insulation not correct	Restore the correct insulation for the wiring
4	COMPONENT CONCERNED	CHECK USING DIAGNOSIS EQUIPMENT	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Engine management control unit	Connect the diagnosis equipment to the engine management control unit and check the "brake pedal switch status"	End of diagnosis	Brake pedal switch faulty	Replace the brake pedal switch Op. 5550D10 BRAKE LIGHT SWITCH - R+R